14 results about "Path expression" patented technology

The invention discloses a relationship-level fine-grained access control system and method for a knowledge graph, and relates to the technical field of knowledge graph security, and the system comprises an analysis and extraction module which is used for analyzing a knowledge graph triple and extracting Predicate; the dynamic strategy engine module is used for dynamically generating and adjusting user access authority and corresponding strategies according to real-time changes of user attributes and knowledge graph data; the relation path construction module is used for constructing a relation path expression; the path constraint module is used for setting a path constraint function; the relation verification module is used for verifying the legality of a multi-hop relation in the expression through a constraint function; the real-time permission judgment module is used for verifying the identity, analyzing the request and determining the permission and the strategy after the user initiates an access request; the security query generation module is used for adding a Predicate filtering condition in a request to rewrite the request and generating a query statement according to the authority, the strategy and the context; and the query execution module is used for executing the query statement in the database and returning a result. The method is used for realizing safe and efficient access of the atlas data.

The invention discloses an HTTP (Hyper Text Transport Protocol) multi-level automatic authentication data migration method and system based on multi-task scheduling, the method realizes automatic two-way synchronization between an HTTP data source and various target storage systems through a configuration mode, and comprises the following steps: constructing a nested authentication model supporting automatic refreshing of a dynamic token, abstracting a Token refresh protocol into a configurable HTTP interface for calling, and realizing secure update of an authentication state through atomic operation; establishing a multi-dimensional parallel response verification mechanism, performing intelligent judgment based on multi-condition combination of HTTP state codes, response headers and response body fields, and accurately extracting target data through a JSON path expression; a second-level time window scheduling strategy is adopted, and high-frequency data migration in a continuous pulling mode and a timing interval mode is achieved through a thread pool and a timer; through the recursive configuration design, the defects that a traditional tool is single in authentication mode and difficult to expand are overcome, and the efficiency and reliability of enterprise-level data integration are improved.

The application provides a kind of unstructured data access method and device, scheme includes: receiving JSON format interface parameter data;Based on the JSON Schema mode definition of pre-configuration, data is format checked, and after checking, it is converted into JsonObject general data carrier;Based on the JsonPath path expression of pre-definition, field in carrier is addressed and read-write operation;The carrier after processing is converted into the document data of database interaction format, simultaneously, JsonPath expression is converted into the field key expression form required by database query command;Based on the field key expression form, database operation command is constructed and executed, and document data is stored or queried in database.

Embodiments of the present specification relate to the technical field of text processing, and provide a text blocking method and device based on HTML node path analysis, comprising: performing initial blocking on the HTML document to obtain an initial HTML document blocking result, and recording an XPath path expression corresponding to each piece of text in the target HTML document and an initial HTML document block to which the text belongs; performing preprocessing on each initial HTML document block to obtain a plurality of initial pure text document blocks; performing merging or segmentation operations on the initial pure text document blocks to obtain a plurality of final pure text document blocks; and blocking the target HTML document according to the XPath path expression corresponding to each piece of text in the final pure text document blocks and the initial HTML document block to which the text belongs, to obtain a final HTML document blocking result. Through the embodiments of the present specification, the accuracy of HTML text blocking can be improved.

The invention relates to the technical field of computers, and discloses an intelligent heterogeneous document extraction method and system, electronic equipment and a storage medium, and the method comprises the steps: obtaining a to-be-processed heterogeneous structured document for analysis processing, and extracting path expressions of all data nodes in the document; inputting the path expressions into a pre-trained field classification model in batches; performing feature analysis and classification calculation on each path expression based on a field classification model, and outputting a corresponding target structured field prediction result; establishing a mapping relation from the path expressions to the target field according to the prediction result, and extracting node content data corresponding to the path expressions from the original structured document based on the mapping relation; and filling the node content data into the corresponding target structured fields according to the mapping relationship to generate a structured data record in a standard format. The method can automatically adapt to different document structures, and dependence on manual rules is reduced.

The invention discloses a way director interaction system and method based on an AI digital human, and relates to the technical field of artificial intelligence man-machine interaction, and the method comprises the steps: collecting a screen front input event, normalizing the event into an event stream, building a reference line, and dynamically judging the physical position and the sight line area of a user under environment perception; based on a reference line, a user physical position and a sight line area, dividing semantic zones from a starting point to a target position, arranging the semantic zones into an ordered semantic zone sequence, binding an on-screen instruction and a plurality of on-screen candidate target areas for each semantic zone, dynamically sorting the candidate target areas, and establishing an interaction log; and the AI digital person broadcasts according to the ordered semantic zone sequence, highlights the on-screen indication and the on-screen candidate target area when broadcasting to the semantic zone name, and judges whether the sight of the user resides in the first candidate target area in a fixed confirmation time period. The continuity and logic consistency of path expression are kept in a complex space, and the accuracy of man-machine interaction is improved.

The application provides a kind of unstructured data access method and device, scheme includes: receiving JSON format interface parameter data;Based on the JSON Schema mode definition of pre-configuration, data is format checked, and after checking, it is converted into JsonObject general data carrier;Based on the JsonPath path expression of pre-definition, field in carrier is addressed and read-write operation;The carrier after processing is converted into the document data of database interaction format, simultaneously, JsonPath expression is converted into the field key expression form required by database query command;Based on the field key expression form, database operation command is constructed and executed, and document data is stored or queried in database.

The invention belongs to the technical field of passenger ticket query service, and particularly relates to a freight rate search data analysis method, system and device and a storage medium. The method comprises the steps of obtaining a flight query request; generating flight query result data according to the flight query request; verifying a flight query result data format; constructing a corresponding path expression based on the verification result; analyzing key attributes in the flight query result data by utilizing the path expression to obtain a first analysis result, and storing the first analysis result through a cache mechanism; and presenting the data in pages based on the first analysis result. The method has the capability of efficiently analyzing the JSON and XML data structures, and the core technology is that the quick matching and analysis of the data structures are realized by constructing the JSONPath and XMLPath path expressions and combining a path cache mechanism.

The application discloses a kind of distributed data security early warning methods, specifically related to distributed data early warning technical field, including obtaining the task instruction sequence execution structure extraction operation in distributed data node and carrying out structure generation processing, generates path expression graph, carries out fragment frequency statistics and structure position aggregation operation to path expression graph, outputs path characteristic fragment set;Based on the path characteristic fragment set executes camouflage input induction modeling operation and then carries out the operation of generating the path of confrontation, outputs camouflage path set, combined with path expression graph executes path input combination construction operation, outputs task execution path input combination;By constructing camouflage path generation, structure deviation identification and consensus path determination mechanism, the path result of active identification structure consistency but behavior camouflage, bypass traditional only rely on the judgment mode of result difference, to solve the problem that consensus mechanism cannot identify potential consistency camouflage error in background art.

This invention provides a method, apparatus, electronic device, medium, and product for collecting details pages of bidding sources, relating to the field of information collection technology. The method includes: upon obtaining a target bidding source task from a message queue based on a browser instance, determining list page information based on the target bidding source task; generating an initial path expression based on the list page information; and, if the initial path expression is verified to be valid, determining the target details page based on the initial path expression. The technical solution of this invention, by adaptively generating the initial path expression, ultimately achieves the extraction of the target details page, reducing reliance on manually configured path expressions and maintaining a high success rate in collecting the target details page even when the webpage structure changes.

This invention relates to the field of data analysis technology and is a method for fusing and mapping multi-source heterogeneous data throughout the entire lifecycle of an engineering project. The specific method includes: establishing a unified entity identification coding rule through a multi-source engineering information set; transforming engineering information from different stages into a set of identified components and constructing an initial entity expression matrix; classifying and distinguishing traversal, overlapping, and interlacing relationships through candidate relationship screening and local topological measure calculation; converting each hierarchical spatial relationship unit into a standard relationship expression record to form a set of component relationships; forming a cross-stage component evolution path expression model through candidate association pair screening, refined semantic matching, and chain segment splicing; and obtaining a continuous spatial semantic expression model covering the entire lifecycle through unified spatial mapping, fusion weight calculation, spatial aggregation, and consistency verification. This invention solves the problem of historical semantics and current semantic discontinuity caused by the fragmentation of construction stages in existing technologies.

This invention discloses a real-time risk control assessment method and system for unmanned aerial vehicles (UAVs) based on efficient data caching and parameter parsing. The method includes: analyzing risk control scenarios such as pre-flight, in-flight, and airspace route conflicts; determining assessment items and configuring trigger conditions, dependent parameters, and data reading path expressions; and completing pre-compilation of the parsing engine. It also involves receiving raw UAV data, determining risk control scenarios, acquiring external risk data, and calculating flight-related data in real time; aggregating the two types of data to generate standardized objects and composite cache keys, and writing them to the cache; triggering assessment items through semantic analysis; and batch loading standardized objects from the cache based on the composite cache keys; extracting parameter values ​​through the expression parsing engine and sending them to the rule engine to complete real-time risk control assessment, efficiently adapting to UAV risk control requirements. This invention achieves millisecond-level real-time risk control response capabilities while ensuring the system possesses high flexibility, high configurability, and high operational reliability to adapt to low-altitude operation characteristics.

This invention discloses a relation-level fine-grained access control system and method for knowledge graphs, relating to the field of knowledge graph security technology. The system includes: a parsing and extraction module: parsing knowledge graph triples and extracting Predicates; a dynamic policy engine module: dynamically generating and adjusting user access permissions and corresponding policies based on real-time changes in user attributes and knowledge graph data; a relation path construction module: constructing relation path expressions; a path constraint module: setting path constraint functions; a relation verification module: verifying the legality of multi-hop relations in the expressions through constraint functions; a real-time permission determination module: verifying identity, parsing the request, and determining permissions and policies after a user initiates an access request; a secure query generation module: rewriting the request and generating query statements by adding Predicate filtering conditions to the request based on permissions, policies, and context; and a query execution module: executing the query statements in the database and returning the results. This invention is used to achieve secure and efficient access to knowledge graph data.

The invention relates to the technical field of big data processing, and discloses a cross-border e-commerce data statistical management method and system based on data processing analysis, and the method comprises the steps: carrying out the atomization semantic identification registration of the attributes of six entities, i.e., commodities, users and transactions, through a metadata registration center; receiving an analysis demand through a natural language interface, and analyzing the analysis demand by a dynamic compiler to generate a dimension path expression and an aggregation instruction; projecting original pipeline data by using a distributed memory calculation layer, constructing a temporary multi-dimensional cube and executing grouping aggregation; and finally, outputting a visual chart or a structured table. According to the scheme, second-level dynamic analysis response of any dimension combination is achieved, high-performance aggregation of 10 billion-level data is supported, correctness of service logic and data safety are ensured, and real-time performance and flexibility of cross-border e-commerce data decision making are improved.