Cross-border qualification verification and visa material intelligent management system for international students in China

Abstract

The application discloses a cross-border qualification verification and visa material intelligent management system for overseas students in China, and relates to the technical field of intelligent document processing. The system receives material replacement operations, calls reference materials and replacement materials, determines reference review pages and block codes, obtains reference page block groups and page block code vectors, calculates attention weights, weights row sequence positions and column sequence positions in the common edge neighborhood, iteratively determines the receiving page block, selects the minimum connection path of the intermediate page block between the non-common edge receiving page blocks, encloses the replacement review carrying area, covers the reference page block group and the replacement review carrying area, restores the covered rectangular page blocks layer by layer according to the page block code vectors of the uncovered rectangular page blocks, extracts the backfill path to form a double-column receiving diagram, limits the single-occupied receiving path, connects the receiving page blocks to form a cross-border qualification review receiving framework, and then counts the reference rectangular page block proportion to obtain the cross-border qualification review receiving amount. The visa material inheritance lag is constructed, and the review evaluation is performed.

Description

Technical Field

[0001] This invention relates to the field of intelligent document processing technology, specifically to an intelligent management system for cross-border qualification verification and visa application materials for international students coming to China. Background Technology

[0002] The field of intelligent document processing technology involves technologies such as document image recognition, page structure analysis, material content comparison, review information association, and review result management. When international students in China apply for admission, residence permits, and visas, they typically need to submit academic certificates, transcripts, identity documents, language proficiency certificates, and other cross-border qualification documents. Due to differences in the countries of origin, document formats, layouts, and authentication methods, the management system needs to verify the cross-border qualifications of international students and uniformly manage visa materials generated during the process of supplementing, replacing, and changing document versions. This supports reviewers in retrieving materials, locating review content, and recording verification conclusions.

[0003] Current intelligent management methods for verification and visa application materials typically use document name, material category, or page number as the basis for material association. When international students submit replacement materials, the system often saves the replacement materials as new files or directly replaces the original materials, making it difficult to identify the specific page range within the replacement materials that carries the original supplementary information. For situations involving changes in the number of pages, redesigned layouts, relocated content, or replacement of only part of the supporting content, the existing methods struggle to determine the position of the baseline review page within the replacement materials based on page content. They also cannot distinguish between content that can retain the original review conclusions and content requiring re-verification, necessitating examiners to search page by page and perform manual comparisons. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an intelligent management system for cross-border qualification verification and visa application materials for international students coming to China, thus solving the problems mentioned in the background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an intelligent management system for cross-border qualification verification and visa application materials for international students in China, comprising a material assembly module, a receiving and positioning module, a backfilling and receiving module, and a succession assessment module; The material assembly module is used to receive material replacement operations and retrieve the reference material and the replacement material, determine the reference review page from the reference material, and then encode the reference review page and the replacement material into blocks to obtain the reference page block group and the page block encoding vector. The receiving and positioning module is used to calculate the attention weight of the replacement rectangular page block relative to each reference rectangular page block based on the page block encoding vector. The row and column positions in the shared neighborhood are weighted by the attention weight to iteratively determine the receiving page block. The module also selects the intermediate page block with the fewest connection paths among the non-shared receiving page blocks to form the replacement review carrying area. The backfilling and receiving module is used to cover the base page block group and replace the review and receiving area. Based on the page block encoding vector of the uncovered rectangular page block, the covered rectangular page block is restored layer by layer and the backfilling path is extracted to form a double column receiving diagram. The single receiving path is restricted, and each receiving page block is connected to form a cross-border qualification review receiving skeleton. Then, the proportion of the base rectangular page block that reaches the receiving page block is counted to obtain the cross-border qualification review receiving volume. The succession assessment module is used to connect the alternative side path segments of the single succession path to form a succession route map, and to strip the succession page blocks and connecting paths. The remaining page blocks are compared with the total number of rectangular page blocks contained in the benchmark page block group to obtain the visa material succession lag, and then a review and assessment are performed.

[0006] Preferably, the material assembly module includes a material retrieval unit and a page block encoding unit; The material retrieval unit is used to read the material replacement content generated when international students in China submit alternative materials, and extract the replaced material identifier, the alternative material identifier, and the supplementary document item identifier from the material replacement content. Based on the identifier of the replaced material, retrieve the material specified to be replaced in this replacement operation from the submitted materials and record it as the base material; based on the identifier of the replacement material, retrieve the material submitted in this replacement operation and record it as the replacement material. Based on the supplementary document item identifier, retrieve the review record with the same supplementary document item identifier from the review record of the benchmark material, read the material page number recorded in the current review record, and retrieve the corresponding page from the benchmark material for the material page number, and record it as the benchmark review page.

[0007] Preferably, the page block encoding unit is used to use the page width and page height of the benchmark review page as the page normalization size, scale each page in the benchmark material and the replacement material to the same page width and the same page height, and use blank pixels to fill the page edges that are not covered after scaling. Then, the normalized benchmark material, replacement material and benchmark review page are divided into equal intervals according to the same number of row divisions and column divisions to obtain a number of rectangular page blocks. The page order, row order and column order of each rectangular page block in its respective material are recorded to obtain the page block position of the current rectangular page block. All rectangular page blocks in the benchmark review page are read to form a benchmark page block group. Using a page block encoder with the same encoding structure and encoding parameters, convolution sampling, nonlinear mapping and region convergence are performed layer by layer on each rectangular page block in the benchmark page block group and each rectangular page block in the replacement material. The values ​​obtained from the region convergence are arranged in a fixed order to obtain the benchmark page block encoding vector and the replacement page block encoding vector with the same number of encoding components.

[0008] Preferably, the receiving and positioning module includes a weight calculation unit, a sampling block finding unit, and a bearing enclosure unit; The weight calculation unit is used to read the rectangular page blocks in the reference page block group and the replacement material one by one, calculate the square root of the sum of squares of each coding component in the page block coding vector of the rectangular page block to obtain the reference page block vector magnitude, and divide each coding component by the reference page block vector magnitude to obtain the normalized reference page block coding vector and the normalized replacement page block coding vector respectively; multiply the normalized reference page block coding vector with the coding components of the same order in each normalized replacement page block coding vector and accumulate them to obtain the page block acceptance value, and perform exponential normalization on each page block acceptance value to obtain the attention weight of each rectangular page block in the replacement material relative to the current reference page block; Exponential normalization: Subtract the largest page block acceptance value from each page block acceptance value, perform an exponential operation on the resulting difference, and divide each exponential operation result by the sum of all exponential operation results.

[0009] Preferably, the sampling block finding unit is used to read the reference rectangular page blocks in the reference page block group one by one. Based on the page block position of the current reference rectangular page block, it extracts rectangular page blocks from the replacement material that have the same page order, page row order, and page column order as the current round sampling starting point. The current round sampling starting point and the rectangular page blocks in the replacement material that are located on the same page and share the same edge form a sampling neighborhood. The page row order and page column order are weighted and averaged according to the attention weight of each rectangular page block to obtain the sampling row position and sampling column position. The distance between the page row order and the sampling row position, and the distance between the page column order and the sampling column position of each rectangular page block in the sampling neighborhood are calculated respectively. The rectangular page block with the smallest sum of the two distances is used as the sampling starting point of the next round, and the sampling neighborhood is re-formed and the sampling center is calculated. The sampling neighborhood is re-formed and the sampling row position and sampling column position are calculated from the next round sampling starting point. Sampling stops when the rectangular page block selected in the next round is the same as the sampling starting point of the current round or when the rectangular page block selected in the next round has already appeared as the sampling starting point in previous rounds. When the same rectangular page block is selected in the previous two rounds, the current rectangular page block is recorded as the successor page block; When a rectangular page block arrives repeatedly, the rectangular page block with the highest attention weight is selected from the circular rectangular page blocks formed by this repeated arrival, and it is recorded as the successor page block of the current base rectangular page block. The bearing enclosure unit is used to sequentially read each receiving page block in the reference page block group. When two adjacent receiving page blocks do not share an edge, the two receiving page blocks are used as the path start point and path end point, respectively. The connection path containing the fewest intermediate rectangular page blocks is searched in the page block adjacency graph. All receiving page blocks and the rectangular page blocks contained in the selected connection path are merged into a connected page block set. The area enclosed by the outer boundary of the connected page block set is recorded as the replacement review bearing area.

[0010] Preferably, the backfill receiving module includes a covering backfill unit, a double-column diagram unit, and a single-occupancy receiving unit; The covering and backfilling unit is used to cover the reference page block group in the reference material and the replacement review bearing area in the replacement material, and retain the page block encoding vector and page block position of each covered rectangular page block before covering; read the covered rectangular page blocks one by one, use the page block encoding vector of the currently covered rectangular page block before covering as the query vector, calculate the page block bearing value between the query vector and the page block encoding vector of each uncovered rectangular page block in the same material, perform exponential normalization on all page block bearing values, and obtain the restoration attention weight; For each reverse path extending from the currently covered rectangular page block to the uncovered rectangular page block, the restoration attention weights between two adjacent rectangular page blocks are read segment by segment in the order from the currently covered rectangular page block to the uncovered rectangular page block, and the product of all restoration attention weights contained in the same reverse path is calculated; the reverse path with the largest product is recorded as the backfill path. The backfill paths of each obscured rectangular page block in the reference material are combined to form the reference backfill path, and the backfill paths of each obscured rectangular page block in the replacement material are combined to form the replacement backfill path.

[0011] Preferably, the dual-column plotting unit is used to extract the backfill path of the current reference rectangular page block and the backfill path of the receiving page block; taking the current reference rectangular page block and the receiving page block as the path starting blocks respectively, the path position is marked block by block along their respective backfill paths towards the uncovered rectangular page blocks, the rectangular page blocks contained in the backfill path of the current reference rectangular page block are arranged according to the path position to form a reference node column, and the rectangular page blocks contained in the backfill path of the receiving page block are arranged according to the path position to form a replacement node column; the rectangular page blocks with consecutive path positions in the same node column are connected, and the rectangular page blocks with the same path position value in the reference node column and the replacement node column are connected to form a dual-column receiving diagram of the reference rectangular page block.

[0012] Preferably, the single-occupancy receiving unit is used to set each diagram node belonging to the replacement material in the double-column receiving diagram as a single-occupancy page block node, and to limit each single-occupancy page block node to only one single-occupancy receiving path; sequentially read each reference rectangular page block in the reference page block group, and take the uncovered rectangular page block at the beginning of the reference backfill path of the current reference rectangular page block as the path starting point, and take the receiving page block corresponding to the current reference rectangular page block as the path ending point, and extend the current single-occupancy receiving path in the double-column receiving diagram; When a single-occupying receiving path reaches a single-occupying page block node that has been occupied by a previous single-occupying receiving path, it stops extending along the replacement material side and turns to the reference material side, where the drawing node has the same arrangement order as the current single-occupying page block node. It then searches for the first reference material side drawing node connected to an unoccupied single-occupying page block node along the arrangement order of the reference backfill path, and then turns to the replacement material side to continue extending towards the current receiving page block. When a single-occupying undertaking path reaches the current undertaking page block, the current single-occupying undertaking path is retained, and the single-occupying page block nodes passed through by the current path are set to occupied status; If the current receiving page block is not reached after traversing to the end of the baseline backfill path, the current baseline rectangular page block is recorded as the receiving disconnected page block; Based on the order of the receiving pages in the baseline page block group, the receiving pages of adjacent single receiving paths are connected in sequence to form the receiving skeleton of cross-border qualification review; The number of baseline rectangular page blocks that form a single-occupying acceptance path from the path start point to the current acceptance page block in the double-column acceptance diagram is counted, and the current number is divided by the total number of rectangular page blocks contained in the baseline page block group to obtain the cross-border qualification review acceptance volume.

[0013] Preferably, the succession assessment module includes a route stripping unit and a review and ruling unit; The route stripping unit is used to extract the path segments of each individual acceptance path located on the side of the replacement material from the cross-border qualification review acceptance skeleton, and record them as replacement acceptance segments. Adjacent replacement acceptance segments are connected in sequence. When two adjacent acceptance pages share an edge, they are connected along the shared edge; when two adjacent acceptance pages do not share an edge, they are connected along the connection path already determined in the page adjacency graph. No connection is established at the location of the acceptance disconnection page, forming a succession route graph. The acceptance pages at the beginning and end of the succession route graph are used as the stripping starting points, and the acceptance pages are read one by one according to the arrangement order of each acceptance page in the benchmark page group and its reverse order. When reading each acceptor block, remove the replacement acceptor segment to which the current acceptor block belongs and the connection path to the next acceptor block; when the current acceptor block is an acceptor break block, the current replacement acceptor segment has no connection path to the next acceptor block, there are two or more connection paths to the next acceptor block, or when forward stripping starting from the beginning of the acceptor route map and reverse stripping starting from the end of the acceptor route map read the same acceptor block or two adjacent acceptor blocks, the replacement acceptor segments that have not been removed in the acceptor route map and all acceptor break blocks are combined into a acceptor stagnation block group; The number of inherited and retained pages is calculated by including the disconnected page blocks and the baseline rectangular page blocks of their respective replacement sections that have not been removed. The number of inherited and retained pages is then divided by the total number of rectangular page blocks contained in the baseline page block group to obtain the visa material inheritance delay.

[0014] Preferably, the review and adjudication unit is used to conduct review and assessment based on the volume of cross-border qualification reviews and the lag in visa material inheritance, as follows: When the cross-border qualification review acceptance volume is equal to one and the visa material inheritance lag is equal to zero, the cross-border qualification review inheritance instruction is output, the review conclusion of the benchmark review page is used, and the replacement review bearing area is used as the material scope of the current review conclusion. When the visa application material inheritance gap is greater than zero and less than one, and the inherited page block group forms a continuous area within the replacement review area, a visa application material segmentation takeover instruction is output, the inherited page block group is included in the scope of re-verification, and the review conclusion of the baseline review page is used for the replacement review area outside the inherited page block group. In other cases, a cross-border qualification re-verification instruction will be issued, the review conclusions of the baseline review page will be discontinued, and the replacement review area will be included in the scope of re-verification.

[0015] This invention provides an intelligent management system for cross-border qualification verification and visa application materials for international students coming to China. It offers the following advantages: (1) The system's material assembly module reads the material replacement content generated when international students submit alternative materials, and retrieves the baseline material, replacement material, and baseline review page in sequence based on the replaced material identifier, the replacement material identifier, and the supplementary document identifier. Then, using the page width and page height of the baseline review page as the page normalization size, the baseline material, replacement material, and baseline review page are divided into rectangular page blocks, and the page order, page line order, and page column order of each rectangular page block are recorded. The baseline page block group, baseline page block encoding vector, and replacement page block encoding vector are obtained. Compared with the method of searching for replacement content based on material name, material page number, or manual browsing, the current system incorporates the supplementary document identifier, baseline review page, and rectangular page block content into the same material assembly process. This allows the system to continue searching for the original review content in the replacement material even when the format of the replacement material changes, based on the baseline page block encoding vector and the replacement page block encoding vector.

[0016] (2) The system's receiving and positioning module calculates the page block receiving value and attention weight based on the unitized reference page block encoding vector and the unitized replacement page block encoding vector. Based on the attention weight, it performs a weighted average of the row and column positions of each rectangular page block in the sampling neighborhood to obtain the sampling row position and sampling column position. Through continuous sampling, it determines the receiving page block of each reference rectangular page block and then forms a replacement review receiving area through the connection path in the page block adjacency graph. The backfill receiving module obtains the reference backfill path and the replacement backfill path based on the restoration attention weight, constructs a double-column receiving graph, and restricts different single-occupy receiving paths from repeatedly passing through the same replacement material side rectangular page block through single-occupy page block nodes, forming a cross-border qualification review receiving skeleton, receiving disconnected page blocks, and cross-border qualification review receiving volume. Compared with the method of finding replacement content solely based on text similarity or image similarity, the current system simultaneously utilizes page block encoding vectors, page block positions, page block adjacency relationships, backfill paths, and single-occupy page block node occupancy status to distinguish rectangular page blocks with similar content but different receiving positions, adjacency structures, or receiving paths.

[0017] (3) The system's succession assessment module extracts the replacement acceptance segment located on the side of the replacement material from each individual acceptance path, and constructs an succession route map based on the replacement acceptance segment, acceptance page block, and connection path. Then, the replacement acceptance segment and connection path are stripped off from the beginning and end of the succession route map in reverse order to obtain the succession retention page block group, the number of succession retention page blocks, and the visa material succession lag. The review and adjudication unit, in conjunction with the cross-border qualification review acceptance volume, visa material succession lag, and the distribution status of the succession retention page block group in the replacement review carrying area, outputs the cross-border qualification review inheritance instruction, the visa material segment takeover instruction, or the cross-border qualification re-verification instruction. Compared with the method of using the review conclusion of the benchmark review page as a whole after the replacement material is submitted or re-verifying the replacement material as a whole, the current system can separately determine the rectangular page block range of the review conclusion of the benchmark review page, the succession retention page block group included in the re-verification scope, and the replacement review carrying area included in the re-verification scope, so that the review scope after material replacement matches the cross-border qualification review acceptance volume and the visa material succession lag. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the intelligent management system for cross-border qualification verification and visa materials for international students coming to China, as described in this invention. Figure 2 This is a flowchart illustrating the review, evaluation, and judgment logic of the intelligent management system for cross-border qualification verification and visa application materials for international students coming to China, as described in this invention. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1: Please see Figure 1 This invention provides an intelligent management system for cross-border qualification verification and visa materials for international students coming to China. To achieve the above objectives, this invention is implemented through the following technical solutions: including a material assembly module, a receiving and positioning module, a backfilling and receiving module, and a succession assessment module. The material assembly module is used to receive material replacement operations and retrieve the reference material and the replacement material, determine the reference review page from the reference material, and then encode the reference review page and the replacement material into blocks to obtain the reference page block group and the page block encoding vector. The receiving and positioning module is used to calculate the attention weight of the replacement rectangular page block relative to each reference rectangular page block based on the page block encoding vector. The row and column positions in the shared neighborhood are weighted by the attention weight to iteratively determine the receiving page block. The module also selects the intermediate page block with the fewest connection paths among the non-shared receiving page blocks to form the replacement review carrying area. The backfilling and receiving module is used to cover the base page block group and replace the review and receiving area. Based on the page block encoding vector of the uncovered rectangular page block, the covered rectangular page block is restored layer by layer and the backfilling path is extracted to form a double column receiving diagram. The single receiving path is restricted, and each receiving page block is connected to form a cross-border qualification review receiving skeleton. Then, the proportion of the base rectangular page block that reaches the receiving page block is counted to obtain the cross-border qualification review receiving volume. The succession assessment module is used to connect the alternative side path segments of the single succession path to form a succession route map, and to strip the succession page blocks and connecting paths. The remaining page blocks are compared with the total number of rectangular page blocks contained in the benchmark page block group to obtain the visa material succession lag, and then a review and assessment are performed.

[0021] In this embodiment, when an international student initially submits a four-page undergraduate graduation certificate, the second page contains the school name, academic level, certificate number, issuance date, and school seal. The reviewer finds that the second page lacks certification information from an accreditation body and records the supplementary document requirement and page number in the review record of the baseline materials. The international student then submits a six-page replacement document. The newly submitted certification page is inserted between the pages of the original graduation certificate. The school name, certificate number, and school seal are moved to the fourth and fifth pages of the replacement document, respectively. The original page numbers can no longer be directly used for the review of the new document. The material assembly module reads the replacement content, extracts the replaced material identifier, substitute material identifier, and supplementary document requirement identifier from it, retrieves the four-page baseline material based on the replaced material identifier, retrieves the six-page replacement material based on the substitute material identifier, and then reads the page number from the review record of the baseline materials based on the supplementary document requirement identifier, determining the second page of the baseline material as the baseline review page. Then, using the page width and height of the benchmark review page as the page normalization dimensions, scaling and blank pixel padding are performed on each page in the benchmark material, replacement material, and benchmark review page. Rectangular page blocks are then divided according to the same number of rows and columns. For example, each page is divided into forty-eight rectangular page blocks of six rows and eight columns. The page order, row order, and column order of each rectangular page block are recorded. Benchmark page block groups, benchmark page block encoding vectors, and replacement page block encoding vectors are obtained through convolution sampling, nonlinear mapping, and region aggregation, ensuring that the school name, certificate number, issuance date, and school seal on the second page of the benchmark material all form benchmark rectangular page blocks with page block positions.

[0022] The positioning module locates the position of the reviewed content in the six-page replacement material based on the base page block encoding vector and the replacement page block encoding vector. It obtains the unitized base page block encoding vector and the unitized replacement page block encoding vector, calculates the page block bearing value of each rectangular page block in the replacement material relative to the current base rectangular page block, and performs exponential normalization on all page block bearing values ​​to obtain attention weights. Taking the base rectangular page block carrying the school seal in the base review page as an example, the graduation certificate seal on page four and the certification agency seal on page five of the replacement material both contain circular seal outlines, and both rectangular page blocks may obtain significant attention weights. Instead of directly selecting the rectangular page block with the highest attention weight, it first starts with rectangular page blocks that share the same page order, page row order, and page column order. It then forms a sampling neighborhood with the current sampling starting point and rectangular page blocks sharing the same edge with it. Finally, it performs a weighted average of the page row order and page column order based on the attention weight of each rectangular page block to obtain the sampling row position and sampling column position. After the sampling starting point moves continuously according to the sampling row and column positions, it eventually stops at the rectangular page block carrying the school seal on the fourth page of the replacement material. This rectangular page block is then identified as the successor page block. Although the certification body seal on the fifth page has similar image content, its page position, surrounding text blocks, and adjacent positions do not conform to the continuous sampling direction, and therefore it is not identified as the successor page block of the current benchmark rectangular page block. The successor page blocks are connected according to the arrangement order of the benchmark rectangular page blocks in the benchmark page block group. When the successor page block carrying the school name, the successor page block carrying the certificate number, and the successor page block carrying the school seal do not share edges, the connection path with the fewest intermediate rectangular page blocks is selected in the page block adjacency graph. When the number of connection paths is the same, the connection path with the largest sum of weights of the intermediate rectangular page blocks is selected, ultimately forming the replacement review carrying area. The backfill receiving module then covers the baseline page block group and the replacement review receiving area. Based on the restoration attention weight of each uncovered rectangular page block to each covered rectangular page block, it obtains the baseline backfill path and the replacement backfill path, and constructs a two-column receiving diagram according to the path position order. For example, the baseline rectangular page block carrying the school name and the baseline rectangular page block carrying the school seal in the baseline review page may both extend to their respective receiving pages through the same title rectangular page block in the replacement material. The rectangular page block on the replacement material side is set as a single-occupying page block node. After the current title rectangular page block is occupied by the previous single-occupying receiving path, the next single-occupying receiving path turns to the graph node on the baseline material side with the same path position order as the current single-occupying page block node, and then searches for the first baseline material side graph node that connects to the unoccupied single-occupying page block node along the baseline backfill path, and re-enters the replacement material side. This forms a single-account acceptance path for non-overlapping rectangular page blocks on the replacement material side; the reference rectangular page block that cannot reach the acceptance page block before the end of the reference backfill path is recorded as the acceptance disconnection page block, and the cross-border qualification review acceptance skeleton and cross-border qualification review acceptance volume are formed accordingly.

[0023] The succession assessment module further divides the scope of materials that can be used in the original review conclusion and the scope of materials that need to be re-verified based on the cross-border qualification review succession framework. Assuming the baseline page block group contains forty-eight baseline rectangular page blocks, of which forty-four baseline rectangular page blocks form single-occupying succession paths continuously leading from the path start point to the succession page block, and four baseline rectangular page blocks are recorded as succession disconnected pages due to the addition of certification instructions to the replacement materials, changes in the position of the school seal, and interruptions in the connection path, then the cross-border qualification review succession volume is forty-four divided by forty-eight. The replacement succession segments located on the side of the replacement materials for each single-occupying succession path are extracted, and a succession route map is formed based on the already determined connection paths between adjacent succession page blocks. Then, starting from the beginning and end of the succession route map respectively, according to the arrangement order of each succession page block in the baseline page block group and its reverse order, the replacement succession segments belonging to the current succession page block and the connection paths leading to the next succession page block are removed one by one. If the four remaining baseline rectangular page blocks are all located near the certification description and certification body seal on page five of the replacement materials, and form a continuous area within the replacement review area, then the four baseline rectangular page blocks and their replacement transition section constitute a successor retention page block group. The number of successor retention page blocks is four, and the visa material succession gap is four divided by forty-eight. Based on this, a visa material segmentation takeover instruction is issued, including the successor retention page block group in the re-verification scope. The examiner only verifies the certification description and certification body seal on page five of the replacement materials, and uses the review conclusions carried by the school name, academic level, certificate number, issuance date, and school seal outside the successor retention page block group. If all 48 baseline rectangular page blocks form a continuous single-acceptance path, the cross-border qualification review acceptance volume is equal to one, and the visa material inheritance lag is equal to zero, then a cross-border qualification review inheritance instruction is output. If the acceptance disconnected page blocks are scattered across multiple pages, the replacement acceptance segment has multiple connecting paths to the next acceptance page block, or the inheritance lag page block group cannot form a continuous area, then a cross-border qualification re-verification instruction is output, and the entire replacement review area is included in the re-verification scope. The current technical link no longer adopts the single method of using or re-verifying the entire document after the replacement materials are submitted. Instead, it divides the review scope based on the baseline page block group, the replacement review area, the single-acceptance path, the acceptance disconnected page blocks, the cross-border qualification review acceptance volume, the inheritance lag page block group, and the visa material inheritance lag, so that the review conclusions after material replacement have a clear page range, rectangular page block range, and path basis.

[0024] Example 2: Please refer to Figure 2 Specifically: the material assembly module includes a material retrieval unit and a page block encoding unit; The material retrieval unit is used to read the material replacement content generated when international students in China submit alternative materials, and extract the replaced material identifier, the alternative material identifier, and the supplementary document item identifier from the material replacement content. Based on the identifier of the replaced material, retrieve the material specified to be replaced in this replacement operation from the submitted materials and record it as the base material; based on the identifier of the replacement material, retrieve the material submitted in this replacement operation and record it as the replacement material. Based on the supplementary document item identifier, retrieve the review record with the same supplementary document item identifier from the review record of the benchmark material, read the material page number recorded in the current review record, and retrieve the corresponding page from the benchmark material for the material page number, and record it as the benchmark review page; When the same supplementary document item is identified by multiple material page numbers in the review record, the pages are retrieved from the base material according to each material page number, while maintaining the original arrangement order of each page in the base material. All retrieved pages are recorded together as the base review page.

[0025] The page block encoding unit is used to scale each page in the reference material and replacement material to the same page width and height, using the page width and height of the reference review page as the page normalization size. It also fills in the page edges that are not covered after scaling with blank pixels, and then divides the normalized reference material, replacement material and reference review page into equal intervals according to the same number of row divisions and column divisions to obtain several rectangular page blocks. The unit records the page order, row order and column order of each rectangular page block in its respective material to obtain the page block position of the current rectangular page block. All rectangular page blocks in the benchmark review page are read to form a benchmark page block group. Using a page block encoder with the same encoding structure and encoding parameters, convolution sampling, nonlinear mapping and region convergence are performed layer by layer on each rectangular page block in the benchmark page block group and each rectangular page block in the replacement material. The values ​​obtained from the region convergence are arranged in a fixed order to obtain the benchmark page block encoding vector and the replacement page block encoding vector with the same number of encoding components. Convolutional sampling is used to traverse the pixels of each rectangular page block using a sliding window, multiply the pixel components in each window by the weight values ​​at the same position in the page block encoder and sum them, and arrange the obtained sampled values ​​according to the window movement order to form a page block sampling matrix. Nonlinear mapping is used to set the sampled values ​​less than zero in the page block sampling matrix to zero, and retain the sampled values ​​not less than zero, forming a page block mapping matrix; Region aggregation is used to divide the page block mapping matrix according to the same number of rows and columns, calculate the average value of the mapping values ​​in each mapping region, and arrange the average values ​​according to the row and column order of the mapping region to obtain the base page block coding vector and the replacement page block coding vector with the same number of coding components.

[0026] In this embodiment, upon receiving the material replacement content submitted by the international student in China, the material retrieval unit extracts the identifier of the replaced material, the identifier of the substitute material, and the identifier of the supplementary document item from the material replacement content. Based on the identifier of the replaced material, it retrieves the baseline material from the submitted materials; based on the identifier of the substitute material, it retrieves the substitute material; and based on the identifier of the supplementary document item, it searches for review records with the same supplementary document item identifier in the review records of the baseline material. It reads the page order of the material recorded in the current review record and retrieves the baseline review page from the baseline material according to the page order. When the same supplementary document item identifier records multiple page orders, the original arrangement order of each page in the baseline material is maintained, and all retrieved pages are used together as the baseline review page. For example, if an international student replaces their original undergraduate graduation certificate with newly obtained academic qualification certification materials, and the original undergraduate graduation certificate is four pages long with the supplementary document item identifier pointing to the second and third pages, while the replacement material is expanded to six pages due to the addition of certification instructions and the certification body's seal, the material retrieval unit can still accurately retrieve the second and third pages involved in the original review based on the supplementary document item identifier and the material page order. Subsequently, the page block encoding unit uses the page width and height of the benchmark review page as the page normalization size, scales all pages in the benchmark material, replacement material, and benchmark review page to the same page width and height, and uses blank pixels to pad the page edges. Then, it performs equidistant segmentation according to the same number of row and column divisions to obtain rectangular page blocks, and records the page order, row order, and column order of each rectangular page block to form the page block position. The page block encoding unit then reads all the rectangular page blocks in the benchmark review page to form a benchmark page block group, and uses the encoding structure and encoding parameters accordingly. The same page block encoder sequentially performs convolutional sampling, nonlinear mapping, and region convergence on each rectangular page block in the reference page block group and each rectangular page block in the replacement material. Convolutional sampling traverses the pixels in the rectangular page block through a sliding window to form a page block sampling matrix. Nonlinear mapping sets the sampled values ​​less than zero in the page block sampling matrix to zero and forms a page block mapping matrix. Region convergence divides the page block mapping matrix according to the same number of row divisions and column divisions and calculates the average value of the mapping values ​​in each mapping region. Finally, the reference page block encoding vector and the replacement page block encoding vector with the same number of encoded components are obtained. Through the above implementation method, the material replacement content, the identifier of the replaced material, the identifier of the substitute material, the identifier of the supplementary item, the material page number, the base material, the substitute material, the base review page, the page block position, the base page block group, the base page block encoding vector, and the replacement page block encoding vector form a continuous data transmission chain. This allows the subsequent receiving and positioning module to no longer rely on the replacement material and the base material to maintain the same number of pages, the same layout, or the same content position. Instead, it can continue to find the location of the original review content in the replacement material based on the base page block encoding vector and the replacement page block encoding vector, even when the number of pages changes, text paragraphs move, the seal position changes, or certification instructions are inserted.Compared to methods that rely on document names, raw material page numbers, or manual page-by-page comparison, the current module limits supplementary documents to the baseline review page and further refines them to rectangular page blocks with page block locations and page block encoding vectors.

[0027] Example 3: Please refer to Figure 2 Specifically: the receiving and positioning module includes a weight calculation unit, a sampling block finding unit, and a bearing enclosure unit; The weight calculation unit is used to read the rectangular page blocks in the reference page block group and the replacement material one by one, calculate the square root of the sum of squares of each coding component in the page block coding vector of the rectangular page block to obtain the reference page block vector magnitude, and divide each coding component by the reference page block vector magnitude to obtain the normalized reference page block coding vector and the normalized replacement page block coding vector respectively; multiply the normalized reference page block coding vector with the coding components of the same order in each normalized replacement page block coding vector and accumulate them to obtain the page block acceptance value, and perform exponential normalization on each page block acceptance value to obtain the attention weight of each rectangular page block in the replacement material relative to the current reference page block; Exponential normalization: Subtract the largest page block acceptance value from each page block acceptance value, perform an exponential operation on the resulting difference, and divide each exponential operation result by the sum of all exponential operation results.

[0028] The sampling block-finding unit is used to read the reference rectangular page blocks in the reference page block group one by one. Based on the page block position of the current reference rectangular page block, it extracts rectangular page blocks from the replacement material that have the same page order, row order, and column order as the current round sampling starting point. The current round sampling starting point and the rectangular page blocks in the replacement material that are located on the same page and share the same edge form a sampling neighborhood. The row order and column order are weighted and averaged according to the attention weight of each rectangular page block to obtain the sampling row position and sampling column position. The distance between the row order and sampling row position of each rectangular page block in the sampling neighborhood and the distance between the column order and sampling column position are calculated respectively. The rectangular page block with the smallest sum of the two distances is used as the sampling starting point of the next round, and the sampling neighborhood is re-formed and the sampling center is calculated. The sampling neighborhood is re-formed and the sampling row position and sampling column position are calculated from the next round sampling starting point. Sampling stops when the rectangular page block selected in the next round is the same as the sampling starting point of the current round or when the rectangular page block selected in the next round has already appeared as the sampling starting point in previous rounds. When the same rectangular page block is selected in the previous two rounds, the current rectangular page block is recorded as the successor page block; When a rectangular page block arrives repeatedly, the rectangular page block with the highest attention weight is selected from the circular rectangular page blocks formed by this repeated arrival, and it is recorded as the successor page block of the current base rectangular page block. The bearing enclosure unit is used to sequentially read each receiving page block in the reference page block group. When two adjacent receiving page blocks do not share an edge, the two receiving page blocks are respectively used as the path start point and path end point. The connection path containing the fewest intermediate rectangular page blocks is searched in the page block adjacency graph. All receiving page blocks and the rectangular page blocks contained in the selected connection path are merged into a connected page block set. The area enclosed by the outer boundary of the connected page block set is recorded as the replacement review bearing area. When multiple connection paths contain the same number of intermediate rectangular page blocks, the connection path with the largest sum of weights among the intermediate rectangular page blocks should be selected.

[0029] In this embodiment, the weight calculation unit reads the reference rectangular page blocks in the reference page block group and the rectangular page blocks in the replacement material one by one, performs a normalization operation on the reference page block encoding vector and the replacement page block encoding vector, and then multiplies and accumulates the encoding components with the same order position in each normalized reference page block encoding vector to obtain the acceptance value of each page block, and obtains the attention weight of each rectangular page block in the replacement material relative to the current reference rectangular page block through exponential normalization; the sampling block finding unit uses the page order position and the line order position of the current reference rectangular page block. Based on the column order within the page, the starting point for the current round of sampling is determined from the replacement materials. The current sampling starting point and the rectangular page blocks sharing the same edge on the same page form a sampling neighborhood. The attention weights of each rectangular page block within the sampling neighborhood are used to perform a weighted average of the row order and column order within the page to obtain the sampling row position and sampling column position. The rectangular page block with the smallest sum of the distance between the row order and the sampling row position and the distance between the column order and the sampling column position is selected as the starting point for the next round of sampling. This process continues until the same rectangular page block is selected in consecutive rounds. When a rectangular page block is repeatedly visited, the successor page block of the current baseline rectangular page block is determined accordingly. For example, when the baseline rectangular page block in the baseline review page, which contains the school name, academic level, certificate number, and school seal, changes its page order due to the addition of a new certification page in the replacement material, the weights are first applied to rectangular page blocks with similar content. Then, the sampling row and column positions move continuously along the common edge sampling neighborhood, so that the rectangular page blocks containing the school name, academic level, certificate number, and school seal converge to their respective successor page blocks. Meanwhile, in the replacement material, the content is similar but... Certification body names or seals located on other pages are not included in the current acceptance result. The bearing demarcation unit reads adjacent accepting pages according to the arrangement order of each accepting page in the baseline page block group. For adjacent accepting pages that do not share edges, the connection path with the fewest middle rectangular page blocks is selected in the page block adjacency graph. When the number of connection paths is the same, the connection path with the largest sum of attention weights of the middle rectangular page blocks is selected. Finally, all accepting pages and the rectangular page blocks contained in the connection paths are merged into a connected page block set, and a replacement review bearing area is formed based on the outer boundary of the connected page block set. The current implementation does not directly determine the review position in the replacement material using a single attention weight. Instead, it uses the content features of the page block encoding vector, the page block position of the rectangular page block, the continuous migration process of the shared edge sampling neighborhood, and the connection paths in the page block adjacency graph together for acceptance positioning. This can handle the changes in the review position of the replacement material caused by page insertion, page changing, layout adjustment, and content movement, and can merge the scattered accepting pages into a replacement review bearing area with continuous boundaries.

[0030] Example 4: Please refer to Figure 2Specifically: the backfill receiving module includes a covering backfill unit, a double-column diagram unit, and a single-occupancy receiving unit; The covering and backfilling unit is used to cover the reference page block group in the reference material and the replacement review bearing area in the replacement material, and retains the page block encoding vector and page block position of each covered rectangular page block before covering; reads the covered rectangular page blocks one by one, uses the page block encoding vector of the currently covered rectangular page block before covering as the query vector, calculates the page block bearing value between the query vector and the page block encoding vector of each uncovered rectangular page block in the same material, performs exponential normalization on all page block bearing values, and obtains the restoration attention weight of each uncovered rectangular page block to the currently covered rectangular page block; For each reverse path extending from the currently covered rectangular page block to the uncovered rectangular page block, the restoration attention weights between adjacent rectangular page blocks are read segment by segment in the order from the currently covered rectangular page block to the uncovered rectangular page block, and the product of all restoration attention weights contained in the same reverse path is calculated; the reverse path with the largest product is recorded as the backfill path of the currently covered rectangular page block, and the rectangular page blocks traversed by the backfill path are arranged in the order from the uncovered rectangular page block to the covered rectangular page block; The backfill paths of each obscured rectangular page block in the reference material are combined to form the reference backfill path, and the backfill paths of each obscured rectangular page block in the replacement material are combined to form the replacement backfill path.

[0031] The dual-column plotting unit is used to extract the backfill path of the current reference rectangular page block and the backfill path of the receiving page block; taking the current reference rectangular page block and the receiving page block as the starting blocks of the path respectively, the path position is marked block by block along their respective backfill paths towards the uncovered rectangular page blocks; the rectangular page blocks contained in the backfill path of the current reference rectangular page block are arranged according to the path position to form a reference node column; and the rectangular page blocks contained in the backfill path of the receiving page block are arranged according to the path position to form a replacement node column; the rectangular page blocks with consecutive path positions in the same node column are connected, and the rectangular page blocks with the same path position value in the reference node column and the replacement node column are connected to form a dual-column receiving diagram of the reference rectangular page block; The path position of the starting block is recorded as zero, and the path position of subsequent rectangular page blocks increases sequentially according to the order in which they are passed.

[0032] The single-occupancy receiving unit is used to set each diagram node belonging to the replacement material in the double-column receiving diagram as a single-occupancy page block node, and to limit each single-occupancy page block node to only one single-occupancy receiving path; sequentially read each reference rectangular page block in the reference page block group, and take the uncovered rectangular page block at the beginning of the reference backfill path of the current reference rectangular page block as the path start point, and take the receiving page block corresponding to the current reference rectangular page block as the path end point, and extend the current single-occupancy receiving path in the double-column receiving diagram; When a single-occupying receiving path reaches a single-occupying page block node that has been occupied by a previous single-occupying receiving path, it stops extending along the replacement material side and turns to the reference material side, where the drawing node has the same arrangement order as the current single-occupying page block node. It then searches for the first reference material side drawing node connected to an unoccupied single-occupying page block node along the arrangement order of the reference backfill path, and then turns to the replacement material side to continue extending towards the current receiving page block. When a single-occupying undertaking path reaches the current undertaking page block, the current single-occupying undertaking path is retained, and the single-occupying page block nodes passed through by the current path are set to occupied status; If the current receiving page block is not reached after traversing to the end of the baseline backfill path, the current baseline rectangular page block is recorded as the receiving disconnected page block; Based on the order of the receiving pages in the baseline page block group, the receiving pages of adjacent single receiving paths are connected in sequence to form the receiving skeleton of cross-border qualification review; When two adjacent receiving page blocks share an edge, they are directly connected along the shared edge. When two adjacent receiving page blocks do not share an edge, the connection path with the fewest intermediate rectangular page blocks is selected in the page block adjacency graph, with the previous receiving page block as the path start point and the next receiving page block as the path end point. When there are multiple connection paths, the connection path with the largest sum of weights of the intermediate rectangular page blocks is selected. The number of baseline rectangular page blocks that form a single-occupying acceptance path from the path start point to the current acceptance page block in the double-column acceptance diagram is counted, and the current number is divided by the total number of rectangular page blocks contained in the baseline page block group to obtain the cross-border qualification review acceptance volume.

[0033] In this embodiment, the backfill receiving module first covers the reference page block group in the reference material and the replacement review bearing area in the replacement material using the covering backfill unit, while retaining the page block code vector and page block position of each covered rectangular page block before covering; then, it reads each covered rectangular page block one by one, using the page block code vector of the current covered rectangular page block before covering as the query vector, calculates the page block bearing value between the query vector and the page block code vector of each uncovered rectangular page block in the same material, and performs exponential normalization on all page block bearing values ​​to obtain each The restoration attention weight of the unmasked rectangular page block to the currently masked rectangular page block is determined. Then, for each reverse path extending from the currently masked rectangular page block to the unmasked rectangular page block, the restoration attention weights between adjacent rectangular page blocks are read in the order from the currently masked rectangular page block to the unmasked rectangular page block. The product of all restoration attention weights contained in the same reverse path is calculated, and the reverse path with the largest product is determined as the backfill path of the currently masked rectangular page block, forming a baseline backfill path and a replacement backfill path. The double-column graphing unit extracts the backfill path of the current baseline rectangular page block and the backfill path of the corresponding receiving page block. Using the current baseline rectangular page block and the receiving page block as path starting blocks, the path sequence is marked along their respective backfill paths towards the unmasked rectangular page block, forming a baseline node column and a replacement node column. Rectangular page blocks with consecutive path sequences in the same node column, as well as rectangular page blocks with the same path sequence value in the baseline and replacement node columns, are connected to form a double-column connection graph of the current baseline rectangular page block. The single-occupancy receiving unit then sets each diagram node belonging to the replacement material in the double-column receiving diagram as a single-occupancy page block node. Taking the uncovered rectangular page block at the beginning of the baseline backfill path of the current baseline rectangular page block as the starting point of the path, and the receiving page block corresponding to the current baseline rectangular page block as the ending point of the path, the single-occupancy receiving path is extended. When the single-occupancy receiving path reaches a single-occupancy page block node that has been occupied by the previous single-occupancy receiving path, it switches to the diagram node on the baseline material side that has the same path sequence as the current single-occupancy page block node, searches along the baseline backfill path for the first baseline material side diagram node connected to the unoccupied single-occupancy page block node, and then returns to the replacement material side to continue extending until the current receiving page block is reached. The baseline rectangular page block that fails to reach the current receiving page block is recorded as a receiving disconnection page block.Taking the simultaneous appearance of a school seal and a certification body seal in the replacement materials as an example, the rectangular page blocks containing both seals may have a large page block overlap value with the rectangular page block containing the school seal in the baseline review page. However, the baseline backfill path, the replacement backfill path, and the double-column overlap diagram can preserve the path order between the school name, certificate number, school seal, and surrounding rectangular page blocks. The single-occupy page block node restriction also prevents different baseline rectangular page blocks from sharing the same rectangular page block on the replacement material side. Therefore, the single-occupy overlap path corresponding to the school seal can continuously reach the overlap page block along the content of the graduation certificate, and the path containing the certification body seal cannot use an already occupied single-occupy page block node to impersonate the overlap path of the school seal. Finally, the single-occupy overlap unit connects the overlap page blocks of each single-occupy overlap path according to the overlap page block order in the baseline page block group, forming the cross-border qualification review overlap skeleton. The number of baseline rectangular page blocks forming a single-occupy overlap path that continuously reaches the current overlap page block from the path start point is divided by the total number of rectangular page blocks contained in the baseline page block group to obtain the cross-border qualification review overlap quantity. The current implementation method enables each benchmark rectangular page block in the benchmark review page to not only find similar content in the replacement material based on the page block encoding vector, but also to check the content migration process based on the benchmark backfill path, replacement backfill path, path order, and single-occupy page block node occupancy status. It can identify situations such as multiple benchmark rectangular page blocks competing for the same replacement material side rectangular page block, misconnection of similar graphic content, and interruption of backfill path. The resulting acceptance disconnected page block, cross-border qualification review acceptance skeleton, and cross-border qualification review acceptance volume establish the path basis for the succession assessment module to divide the succession retention page block group, calculate the visa material succession lag, and output cross-border qualification review inheritance instructions, visa material segmented takeover instructions, or cross-border qualification re-verification instructions. This allows the scope of materials in the replacement material that can use the review conclusion of the benchmark review page and the scope of materials that need to be re-verified to be distinguished according to the rectangular page block and its acceptance path.

[0034] Example 5: Please refer to Figure 2 Specifically: the succession assessment module includes a route stripping unit and a review and ruling unit; The route stripping unit is used to extract the path segments of each individual acceptance path located on the side of the replacement material from the cross-border qualification review acceptance skeleton, and record them as replacement acceptance segments. Adjacent replacement acceptance segments are connected in sequence. When two adjacent acceptance pages share an edge, they are connected along the shared edge; when two adjacent acceptance pages do not share an edge, they are connected along the connection path already determined in the page adjacency graph. No connection is established at the location of the acceptance disconnection page, forming a succession route graph. The acceptance pages at the beginning and end of the succession route graph are used as the stripping starting points, and the acceptance pages are read one by one according to the arrangement order of each acceptance page in the benchmark page group and its reverse order. When reading each acceptor block, remove the replacement acceptor segment to which the current acceptor block belongs and the connection path to the next acceptor block; when the current acceptor block is an acceptor break block, the current replacement acceptor segment has no connection path to the next acceptor block, there are two or more connection paths to the next acceptor block, or when forward stripping starting from the beginning of the acceptor route map and reverse stripping starting from the end of the acceptor route map read the same acceptor block or two adjacent acceptor blocks, the replacement acceptor segments that have not been removed in the acceptor route map and all acceptor break blocks are combined into a acceptor stagnation block group; The number of inherited and retained pages is calculated by including the disconnected page blocks and the baseline rectangular page blocks of their respective replacement sections that have not been removed. The number of inherited and retained pages is then divided by the total number of rectangular page blocks contained in the baseline page block group to obtain the visa material inheritance delay.

[0035] The review and adjudication unit is used to conduct review and assessment based on the volume of cross-border qualification reviews and the lag in visa material inheritance, as follows: When the cross-border qualification review acceptance volume is equal to one and the visa material inheritance lag is equal to zero, the cross-border qualification review inheritance instruction is output, the review conclusion of the benchmark review page is used, and the replacement review bearing area is used as the material scope of the current review conclusion. When the visa application material inheritance gap is greater than zero and less than one, and the inherited page block group forms a continuous area within the replacement review area, a visa application material segmentation takeover instruction is output, the inherited page block group is included in the scope of re-verification, and the review conclusion of the baseline review page is used for the replacement review area outside the inherited page block group. In other cases, a cross-border qualification re-verification instruction will be issued, the review conclusions of the baseline review page will be discontinued, and the replacement review area will be included in the scope of re-verification.

[0036] In this embodiment, the route stripping unit first extracts the path segments of each individual acceptance path located on the side of the replacement material from the cross-border qualification review acceptance skeleton, and records the extracted path segments as replacement acceptance segments. Then, it connects adjacent replacement acceptance segments according to the arrangement order of each acceptance page block in the base page block group. When two adjacent acceptance pages block share an edge, a connection is established along the common edge of the two adjacent acceptance pages block. When two adjacent acceptance pages block do not share an edge, a connection is established along the connection path determined by the bearing enclosure unit in the page block adjacency diagram. No connection is established at the location of the acceptance disconnection page block, thereby forming the succession route diagram. For example, when international students in China replace their original academic credentials with replacement materials that include the academic qualification verification page, graduation certificate page, and school seal page, the school name, certificate number, academic level, and school seal in the baseline verification page reach the receiving page block in the replacement materials through individual receiving paths. The replacement receiving segments containing the school name, certificate number, and academic level can be connected sequentially. However, the individual receiving path containing the school seal is interrupted due to the addition of the certification body seal in the replacement materials. Therefore, the baseline rectangular page block corresponding to the school seal is recorded as the receiving broken page block. The route stripping unit uses the receiving page blocks at the beginning and end of the inherited route map as the starting points for stripping. Following the order of the receiving page blocks in the baseline page block group and their reverse order, it removes the replacement receiving segment to which the current receiving page block belongs, as well as the connection path to the next receiving page block. Stripping stops when a receiving disconnection page block is encountered, the current replacement receiving segment has no connection path to the next receiving page block, the current replacement receiving segment has two or more connection paths to the next receiving page block, or when forward and reverse stripping encounters the same receiving page block or two adjacent receiving page blocks. The remaining replacement receiving segments and all receiving disconnection page blocks in the inherited route map are then grouped into a inherited stagnation page block group. Subsequently, the number of inherited stagnation page blocks is counted in the baseline rectangular page blocks to which the receiving disconnection page blocks and their respective replacement receiving segments have not been removed. The number of inherited stagnation page blocks is then divided by the total number of rectangular page blocks in the baseline page block group to obtain the visa material inherited stagnation difference. The review and adjudication unit further categorizes the review methods based on the cross-border qualification review volume and visa material inheritance lag: When the cross-border qualification review volume is equal to one and the visa material inheritance lag is equal to zero, a cross-border qualification review inheritance instruction is output, using the review conclusion of the benchmark review page, and using the replacement review carrying area as the material scope of the current review conclusion; when the visa material inheritance lag is greater than zero and less than one, and the inherited lag page block group forms a continuous area within the replacement review carrying area, a visa material segmentation takeover instruction is output, only including the inherited lag page block group in the re-verification scope, and using the benchmark review page's review conclusion for the replacement review carrying area outside the inherited lag page block group; in other cases, a cross-border qualification re-verification instruction is output, ceasing the use of the benchmark review page's review conclusion, and including the replacement review carrying area in the re-verification scope.Through the above implementation methods, the succession assessment module can distinguish between rectangular page blocks in replacement materials that can inherit the original review conclusion, succession retention page block groups that need to be re-verified, and replacement review bearing areas that need to be re-verified, based on the continuity status of a single succession path, the location of the succession disconnected page block, and the peelable range of the succession route map. This changes the existing technology's approach of either using the original review conclusion for the entire replacement material or re-verifying the entire material after submission. It enables the review scope to fall on specific page blocks, replacement succession segments, and connecting paths, controlling erroneous succession of review conclusions caused by changes in layout, content insertion, seal replacement, and path branching. It also enables cross-border qualification verification and visa material management for international students in China to perform segmented reviews based on the content succession status of the materials.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended technical solutions and their equivalents.

Claims

1. An intelligent management system for cross-border qualification verification and visa application materials for international students coming to China, characterized by: It includes a material assembly module, a site location module, a backfill site location module, and a succession assessment module; The material assembly module is used to receive material replacement operations and retrieve the reference material and the replacement material, determine the reference review page from the reference material, and then encode the reference review page and the replacement material into blocks to obtain the reference page block group and the page block encoding vector. The receiving and positioning module is used to calculate the attention weight of the replacement rectangular page block relative to each reference rectangular page block based on the page block encoding vector. The row and column positions in the shared neighborhood are weighted by the attention weight to iteratively determine the receiving page block. The module also selects the intermediate page block with the fewest connection paths among the non-shared receiving page blocks to form the replacement review carrying area. The backfilling and receiving module is used to cover the base page block group and replace the review and receiving area. Based on the page block encoding vector of the uncovered rectangular page block, the covered rectangular page block is restored layer by layer and the backfilling path is extracted to form a double column receiving diagram. The single receiving path is restricted, and each receiving page block is connected to form a cross-border qualification review receiving skeleton. Then, the proportion of the base rectangular page block that reaches the receiving page block is counted to obtain the cross-border qualification review receiving volume. The succession assessment module is used to connect the alternative side path segments of the single succession path to form a succession route map, and to strip the succession page blocks and connecting paths. The remaining page blocks are compared with the total number of rectangular page blocks contained in the benchmark page block group to obtain the visa material succession lag, and then a review and assessment are performed.

2. The intelligent management system for cross-border qualification verification and visa application materials for international students coming to China as described in claim 1, characterized in that: The material assembly module includes a material retrieval unit and a page block encoding unit; The material retrieval unit is used to read the material replacement content generated when international students in China submit alternative materials, and extract the replaced material identifier, the alternative material identifier, and the supplementary document item identifier from the material replacement content. Based on the identifier of the replaced material, retrieve the material that is specified to be replaced in this replacement operation from the submitted materials and record it as the base material; Based on the alternative material identifier, retrieve the materials submitted in this replacement operation and record them as the replacement materials; Based on the supplementary document item identifier, retrieve the review record with the same supplementary document item identifier from the review record of the benchmark material, read the material page number recorded in the current review record, and retrieve the corresponding page from the benchmark material for the material page number, and record it as the benchmark review page.

3. The intelligent management system for cross-border qualification verification and visa application materials for international students in China as described in claim 2, characterized in that: The page block encoding unit is used to scale each page in the reference material and replacement material to the same page width and height, using the page width and height of the reference review page as the page normalization size. It also fills in the page edges that are not covered after scaling with blank pixels, and then divides the normalized reference material, replacement material and reference review page into equal intervals according to the same number of row divisions and column divisions to obtain several rectangular page blocks. The unit records the page order, row order and column order of each rectangular page block in its respective material to obtain the page block position of the current rectangular page block. All rectangular page blocks in the benchmark review page are read to form a benchmark page block group. Using a page block encoder with the same encoding structure and encoding parameters, convolution sampling, nonlinear mapping and region convergence are performed layer by layer on each rectangular page block in the benchmark page block group and each rectangular page block in the replacement material. The values ​​obtained from the region convergence are arranged in a fixed order to obtain the benchmark page block encoding vector and the replacement page block encoding vector with the same number of encoding components.

4. The intelligent management system for cross-border qualification verification and visa application materials for international students coming to China as described in claim 3, characterized in that: The receiving and positioning module includes a weight calculation unit, a sampling block finding unit, and a bearing enclosure unit; The weight calculation unit is used to read the rectangular page blocks in the reference page block group and the replacement material one by one, calculate the square root of the sum of squares of each coding component in the page block coding vector of the rectangular page block to obtain the reference page block vector magnitude, and divide each coding component by the reference page block vector magnitude to obtain the normalized reference page block coding vector and the normalized replacement page block coding vector respectively; multiply the normalized reference page block coding vector with the coding components of the same order in each normalized replacement page block coding vector and accumulate them to obtain the page block acceptance value, and perform exponential normalization on each page block acceptance value to obtain the attention weight of each rectangular page block in the replacement material relative to the current reference page block; Exponential normalization: Subtract the largest page block acceptance value from each page block acceptance value, perform an exponential operation on the resulting difference, and divide each exponential operation result by the sum of all exponential operation results.

5. The intelligent management system for cross-border qualification verification and visa application materials for international students coming to China as described in claim 4, characterized in that: The sampling block-finding unit is used to read the reference rectangular page blocks in the reference page block group one by one. Based on the page block position of the current reference rectangular page block, it extracts rectangular page blocks with the same page order, row order, and column order from the replacement material as the current round sampling starting point. The current round sampling starting point and the rectangular page blocks in the replacement material that are located on the same page and share the same edge form a sampling neighborhood. The row order and column order are weighted and averaged according to the attention weight of each rectangular page block to obtain the sampling row position and sampling column position. The distance between the row order and sampling row position of each rectangular page block in the sampling neighborhood and the distance between the column order and sampling column position are calculated respectively. The rectangular page block with the smallest sum of the two distances is used as the sampling starting point of the next round, and the sampling neighborhood is re-formed and the sampling center is calculated. The sampling neighborhood is re-formed and the sampling row position and sampling column position are calculated from the next round sampling starting point. Sampling stops when the rectangular page block selected in the next round is the same as the sampling starting point of the current round or when the rectangular page block selected in the next round has already appeared as the sampling starting point in previous rounds. When the same rectangular page block is selected in the previous two rounds, the current rectangular page block is recorded as the successor page block; When a rectangular page block arrives repeatedly, the rectangular page block with the highest attention weight is selected from the circular rectangular page blocks formed by this repeated arrival, and it is recorded as the successor page block of the current base rectangular page block. The bearing enclosure unit is used to sequentially read each receiving page block in the reference page block group. When two adjacent receiving page blocks do not share an edge, the two receiving page blocks are used as the path start point and path end point, respectively. The connection path containing the fewest intermediate rectangular page blocks is searched in the page block adjacency graph. All receiving page blocks and the rectangular page blocks contained in the selected connection path are merged into a connected page block set. The area enclosed by the outer boundary of the connected page block set is recorded as the replacement review bearing area.

6. The intelligent management system for cross-border qualification verification and visa application materials for international students coming to China as described in claim 5, characterized in that: The backfill receiving module includes a cover backfill unit, a double-column diagram unit, and a single-occupancy receiving unit; The covering and backfilling unit is used to cover the reference page block group in the reference material and the replacement review bearing area in the replacement material, and retain the page block encoding vector and page block position of each covered rectangular page block before covering; read the covered rectangular page blocks one by one, use the page block encoding vector of the currently covered rectangular page block before covering as the query vector, calculate the page block bearing value between the query vector and the page block encoding vector of each uncovered rectangular page block in the same material, perform exponential normalization on all page block bearing values, and obtain the restoration attention weight; For each reverse path extending from the currently covered rectangular page block to the uncovered rectangular page block, the restoration attention weights between two adjacent rectangular page blocks are read segment by segment in the order from the currently covered rectangular page block to the uncovered rectangular page block, and the product of all restoration attention weights contained in the same reverse path is calculated. The reverse path with the largest product is designated as the backfill path; The backfill paths of each obscured rectangular page block in the reference material are combined to form the reference backfill path, and the backfill paths of each obscured rectangular page block in the replacement material are combined to form the replacement backfill path.

7. The intelligent management system for cross-border qualification verification and visa application materials for international students coming to China as described in claim 6, characterized in that: The dual-column plotting unit is used to extract the backfill path of the current reference rectangular page block and the backfill path of the receiving page block; taking the current reference rectangular page block and the receiving page block as the starting blocks of the path respectively, the path position is marked block by block along their respective backfill paths towards the uncovered rectangular page blocks, the rectangular page blocks contained in the backfill path of the current reference rectangular page block are arranged according to the path position to form a reference node column, and the rectangular page blocks contained in the backfill path of the receiving page block are arranged according to the path position to form a replacement node column; the rectangular page blocks with consecutive path position in the same node column are connected, and the rectangular page blocks with the same path position value in the reference node column and the replacement node column are connected to form a dual-column receiving diagram of the reference rectangular page block.

8. The intelligent management system for cross-border qualification verification and visa application materials for international students in China as described in claim 7, characterized in that: The single-occupancy receiving unit is used to set each diagram node belonging to the replacement material in the double-column receiving diagram as a single-occupancy page block node, and to limit each single-occupancy page block node to only one single-occupancy receiving path; sequentially read each reference rectangular page block in the reference page block group, and take the uncovered rectangular page block at the beginning of the reference backfill path of the current reference rectangular page block as the path start point, and take the receiving page block corresponding to the current reference rectangular page block as the path end point, and extend the current single-occupancy receiving path in the double-column receiving diagram; When a single-occupying receiving path reaches a single-occupying page block node that has been occupied by a previous single-occupying receiving path, it stops extending along the replacement material side and turns to the reference material side, where the drawing node has the same arrangement order as the current single-occupying page block node. It then searches for the first reference material side drawing node connected to an unoccupied single-occupying page block node along the arrangement order of the reference backfill path, and then turns to the replacement material side to continue extending towards the current receiving page block. When a single-occupying undertaking path reaches the current undertaking page block, the current single-occupying undertaking path is retained, and the single-occupying page block nodes passed through by the current path are set to occupied status; If the current receiving page block is not reached after traversing to the end of the baseline backfill path, the current baseline rectangular page block is recorded as the receiving disconnected page block; Based on the order of the receiving pages in the baseline page block group, the receiving pages of adjacent single receiving paths are connected in sequence to form the receiving skeleton of cross-border qualification review; The number of baseline rectangular page blocks that form a single-occupying acceptance path from the path start point to the current acceptance page block in the double-column acceptance diagram is counted, and the current number is divided by the total number of rectangular page blocks contained in the baseline page block group to obtain the cross-border qualification review acceptance volume.

9. The intelligent management system for cross-border qualification verification and visa application materials for international students coming to China as described in claim 8, characterized in that: The succession assessment module includes a route stripping unit and a review and ruling unit; The route stripping unit is used to extract the path segments of each individual acceptance path located on the side of the replacement material from the cross-border qualification review acceptance skeleton, and record them as replacement acceptance segments. Adjacent replacement acceptance segments are connected in sequence. When two adjacent acceptance pages share an edge, they are connected along the shared edge; when two adjacent acceptance pages do not share an edge, they are connected along the connection path already determined in the page adjacency graph. No connection is established at the location of the acceptance disconnection page, forming a succession route graph. The acceptance pages at the beginning and end of the succession route graph are used as the stripping starting points, and the acceptance pages are read one by one according to the arrangement order of each acceptance page in the benchmark page group and its reverse order. When reading each acceptor block, remove the replacement acceptor segment to which the current acceptor block belongs and the connection path to the next acceptor block; when the current acceptor block is an acceptor break block, the current replacement acceptor segment has no connection path to the next acceptor block, there are two or more connection paths to the next acceptor block, or when forward stripping starting from the beginning of the acceptor route map and reverse stripping starting from the end of the acceptor route map read the same acceptor block or two adjacent acceptor blocks, the replacement acceptor segments that have not been removed in the acceptor route map and all acceptor break blocks are combined into a acceptor stagnation block group; The number of inherited and retained pages is calculated by including the disconnected page blocks and the baseline rectangular page blocks of their respective replacement sections that have not been removed. The number of inherited and retained pages is then divided by the total number of rectangular page blocks contained in the baseline page block group to obtain the visa material inheritance delay.

10. The intelligent management system for cross-border qualification verification and visa application materials for international students coming to China as described in claim 9, characterized in that: The review and adjudication unit is used to conduct review and assessment based on the volume of cross-border qualification reviews and the lag in visa material inheritance, as follows: When the cross-border qualification review acceptance volume is equal to one and the visa material inheritance lag is equal to zero, the cross-border qualification review inheritance instruction is output, the review conclusion of the benchmark review page is used, and the replacement review bearing area is used as the material scope of the current review conclusion. When the visa application material inheritance gap is greater than zero and less than one, and the inherited page block group forms a continuous area within the replacement review area, a visa application material segmentation takeover instruction is output, the inherited page block group is included in the scope of re-verification, and the review conclusion of the baseline review page is used for the replacement review area outside the inherited page block group. In other cases, a cross-border qualification re-verification instruction will be issued, the review conclusions of the baseline review page will be discontinued, and the replacement review area will be included in the scope of re-verification.

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