A method for evaluating and establishing a core journal list based on seed journals

Abstract

The application relates to a method for evaluating and establishing a core journal list based on seed journals, and belongs to the technical field of core journal list evaluation. The method solves the problems of inconsistent expert opinions, complicated evaluation processes and the like in the prior art, and does not consider the quality of papers and the like. The method comprises the following steps: S0: establishing the representation of an initial set; S1: selecting initial seed journals; S2: setting an analysis time window; S3: determining seed journal candidates of the next iteration round based on the current seed journal set; S4: calculating the scores of the seed journal candidates of the next iteration round; S5: screening to obtain a seed journal set of the next round; S6: iteration end judgment; if there is no new candidate or the candidate seed journal set is empty, the iteration is terminated, and the next step is executed; otherwise, the step of returning to S3 is performed; and S7: core journal list construction, wherein the seed journals obtained in the last iteration round are taken as the core journal list.

Description

Technical Field

[0001] This invention relates to the field of core journal list evaluation technology, specifically to a method for evaluating and establishing a core journal list based on seed journals. Background Technology

[0002] For a long time, libraries, researchers, and research institutions have used lists of core journals to objectively evaluate academic journals and understand their academic influence. These lists play a crucial role in library resource development, paper submission, and academic evaluation, and are also an important component of scientific and technological evaluation.

[0003] Currently, the methods for forming a core journal list mainly include qualitative and quantitative evaluation. Qualitative evaluation relies heavily on the opinions of experts in the field, which is a crucial aspect of the core journal list formation process. However, this method faces problems such as inconsistent expert opinions and a cumbersome evaluation process. On the other hand, quantitative evaluation methods for core journal lists are mainly based on Bradford's Law, ranking journals according to the number of papers they publish in a particular discipline. Journals are divided into core, related, and irrelevant sections specifically targeting that discipline, with each section having an equal number of articles. However, this method is affected by the volume of articles published by the journals and only considers quantity while neglecting factors such as paper quality.

[0004] Chinese invention patent application, publication number CN112989070A, entitled "A Quantitative Evaluation System and Method for Core Journals Based on a Computer System," categorizes the evaluation system into a basic database, a subject classification subsystem, a standard subsystem, and an evaluation subsystem. Based on subject information, it calculates the hit rate of papers for each journal within the standard subsystem, deriving the journal's quality evaluation index. However, this method ranks journals according to the number of papers published in a particular subject area, without considering the quality of the papers.

[0005] Therefore, there is a need in this field for an improved evaluation method for the core journal list, in order to comprehensively consider the quality and quantity of journals and quantitatively evaluate the core journals, and provide a more accurate evaluation of the core journal list. Summary of the Invention

[0006] In view of the above problems, this invention provides a method for evaluating and establishing a core journal list based on seed journals. It initially selects recognized "established" core journals as seed journals and uses citation relationships between journals for iterative analysis. In each iteration, the system extracts references from papers published in the seed journals, filters candidate journals that meet the criteria, and calculates scores for candidate journals based on citation frequency and publication volume. By setting thresholds for citation frequency and score, and controlling the concentration of journal citations, the seed journal set is gradually expanded until the termination condition is met. Finally, the core journal lists obtained from each iteration are merged to form a comprehensive core journal list. The innovations of this method include at least the evaluation of disciplinary influence based on citation tracing, which comprehensively considers the number of citations, citation sources, and citation counts of journals, thereby providing a more comprehensive assessment of the academic contributions of journals. Compared with existing qualitative and quantitative evaluation methods, this invention effectively improves the scientific rigor and accuracy of the core journal list through multi-round iterations and a precise screening mechanism. This method not only solves the problems of inconsistent expert opinions and cumbersome evaluation processes, but also overcomes the shortcomings of the traditional Bradford's Law method, which only considers quantity and ignores quality.

[0007] This invention proposes a method for constructing a core journal list based on journal citation tracing, effectively addressing the issues of scientific rigor and validity in core journal selection. This method uses the citation counts of established core journals as a foundation, employing citation sources and citation counts to construct a "selection mechanism" for journal importance rating. Through multiple iterations, newly emerging journals are continuously selected as seed journals for iteration until the iteration target is reached. Finally, the core journal lists from different periods are merged to obtain the final calculated core journal list. The unique aspect of this method lies in its citation-tracing-based evaluation of disciplinary influence, comprehensively considering the journal's citation count, citation sources, and citation count, thus providing a more comprehensive assessment of the journal's academic contributions. Through this innovative method, researchers and libraries can more accurately select core journals that meet scientific rigor and validity standards, providing more reliable support for academic research.

[0008] The specific technical solution of the present invention is as follows: A method for determining a core journal list based on seed journals includes: S0: Establish the representation of the initial set, including establishing the seed journal set, the seed journal's published papers set, the published papers' reference set, and the reference's attribute set; S1: Selecting initial seed journals; S2: Set the analysis time window, including setting the time window for retrieving published papers and the time window for retrieving references; S3: Determine the candidate seed journals for the next iteration round based on the current seed journal set; for the first iteration round, the initial seed journals of S1 are used as the seed journal set for that round. S4: Based on the seed journal candidates obtained for the next iteration round, calculate the seed journal candidate scores for the next iteration round; S5: Based on the scores of the seed journal candidates for the next iteration round, select the seed journal set for the next round; S6: Iteration termination judgment. If there are no new candidates or the candidate seed journal set is empty, the iteration terminates and the next step is executed; otherwise, return to S3, take the seed journal set obtained in the next round as the current seed journal set in the next iteration round, and continue to execute the next iteration round. S7: Core Journal List Construction, which uses the seed journals obtained in the last iteration as the core journal list.

[0009] Preferably, in S0: The seed journal collection includes the founding year, type, number of articles published, and ISN number of various sub-journals; The collection of papers published in seed journals includes the authors, publication year, and DOI index number of each paper published in various seed journals; The reference list for each published paper includes the author, year of publication, journal, and DOI index number of each reference in the published paper.

[0010] Preferably, in S1: The initial seed journals include UTD24 in management, the top five journals in economics, or the top four journals in medicine.

[0011] Preferably, S3 includes: S3.1: Based on the current set of seed journals, retrieve the papers published in the current round of seed journals, including the papers published in various sub-journals within the set time window for retrieving published papers. S3.2: Obtain the reference information of papers published in the current round of seed journals, including the reference information of papers published in various sub-journals within the set reference retrieval time window; S3.3: Obtain the collection of journals from which the references of each published paper are published; S3.4: Based on the set of journals that published the references of each paper, select the candidate journals for the next round of seed journals.

[0012] Preferably, S4 includes: S4.1: Obtain the total frequency of citations by the seed journal candidates in the next iteration round; S4.2: Obtain the number of publications of the seed journal candidates for the next iteration within the reference retrieval time window; S4.3: Calculate the candidate scores for the seed journals in the next iteration round by dividing the total number of citations of each candidate journal by the number of articles published by that candidate journal.

[0013] Preferably, S5 includes: S5.1: Based on the total frequency of citations of the candidate seed journals in the next iteration round, filter the set of seed journals for the next round. The filtering method is to set a threshold for the total frequency of citations and remove candidates whose total frequency of citations is less than the threshold, so as to obtain the seed journals for the next round after the total frequency filtering. S5.2: For the next round of seed journals after the total frequency screening, the next round of seed journals is screened based on the candidate object score. The screening method is to set a candidate object score threshold and remove candidate objects whose scores are less than the threshold to obtain the next round of seed journals after the candidate object score screening. S5.3: For the next round of seed journals after the candidate scores are filtered, the next round of seed journals is filtered based on the citation concentration of the journals. The concentration of the candidate journals is calculated, and the seed journals with a concentration higher than the set threshold are removed. The resulting seed journals are used as the set of seed journals for the next round.

[0014] Preferably, in S5.3: For the next round of seed journals after the candidate scores are filtered, calculate the average frequency of citations of each seed journal by the seed journals. Based on the average and total citation frequency of each sub-journal by the seed journal, the normalized variance concentration of each sub-journal is calculated. A concentration variance threshold is set. If the concentration of a seed journal exceeds the threshold, it is removed from the selected seed journals, and the resulting seed journals are used as the seed journal set for the next round.

[0015] Compared with the prior art, the method for determining a core journal list based on seed journals provided by the embodiments of the present invention has at least the following beneficial effects.

[0016] (1) Higher scientific rigor: By tracing citations and evaluating multiple dimensions, the quality and quantity of journal citations are comprehensively considered, avoiding the bias caused by simply relying on the number of publications or expert opinions, thus improving the scientific rigor of the core journal list.

[0017] (2) High degree of automation: The use of iterative algorithms and automated screening mechanisms reduces the problems of human intervention and inconsistencies in expert opinions, and improves the efficiency and operability of the method.

[0018] (3) Strong dynamic update capability: Through multiple iterations and dynamic expansion of seed journals, it can reflect the latest developments in the discipline in a timely manner and maintain the timeliness and forward-looking nature of the core journal list.

[0019] (4) Wide range of applications: This method is applicable to the selection of core journals in multiple disciplines and has strong versatility, which can meet the needs of libraries, research institutions and researchers in different fields.

[0020] (5) More comprehensive: It not only considers the citation frequency, but also combines indicators such as the number of publications and the concentration of citations, providing a more comprehensive and detailed journal evaluation system, which enhances the authority and reliability of the core journal list. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the embodiments will be briefly introduced below. The features and advantages of the present invention can be more clearly understood by referring to the accompanying drawings. The accompanying drawings are schematic and should not be construed as limiting the present invention in any way. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A flowchart illustrating a method for determining a core journal list based on seed journals, according to an embodiment of the present invention. Detailed Implementation

[0023] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments of the present invention and the features thereof can be combined with each other.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein. Therefore, the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0025] The following detailed description, with reference to the accompanying drawings, illustrates a method for determining a core journal list based on seed journals according to an embodiment of the present invention. Methods for constructing a core journal list based on the number of articles published in a journal often neglect factors such as the quality of the articles within that journal, leading to bias in the construction of the core journal list. To remedy this deficiency, a novel method for determining a core journal list based on seed journals is proposed. By constructing a selection mechanism, the source journals of the cited literature in the seed journals are continuously added to the seed journal set until no new journals can be added.

[0026] like Figure 1As shown, a method for determining a core journal list based on seed journals according to an embodiment of the present invention includes the following steps.

[0027] S0: Establish the representation of the initial set, including establishing the seed journal set, the set of papers published in the seed journals, the set of references for the published papers, and the set of attributes for the references. This step may also include establishing the seed journal set for each iteration round.

[0028] In this implementation, the seed journal set is denoted as subscript This indicates the identifier of the seed journal in the seed journal collection, indicated by a subscript. This represents the total number of seed journals in the seed journal set, where: This indicates the first seed journal; This indicates the second seed journal; Indicates the first This seed journal; This refers to the last seed journal.

[0029] Seed Journal Includes related attributes, namely .in, Indicates the year the seed journal was founded. Indicates the type of seed journal (general journal, field journal, yearbook, conference, book, etc.). This indicates the number of articles published in seed journals. This indicates the journal's ISSN number.

[0030] Seed Journal The collection of published papers is denoted as subscript Indicates the seed journal identifier, subscript The identifier number representing the paper. Indicates the journal in which the paper is published. Indicates the paper number, subscript P This indicates the total number of papers.

[0031] Indicates journal First paper; Indicates journal Second paper; Indicates journal No. p Thesis; Indicates journal The last paper; Published papers Includes related attributes, namely .in Indicates the authors of the published paper. Indicates the year the paper was published. This indicates the DOI index number of the published paper.

[0032] paper The set of references is denoted as subscript Subscript is used to identify papers published in seed journals. The reference number is a subscript. Q This indicates the total number of references.

[0033] Indicates the paper The first reference; Indicates the paper The second reference; Indicates the paper The q References; Indicates the paper The last reference; References Includes related attributes, namely .in Indicate the authors of the references, Indicate the year of publication of the reference. Indicates the journal in which the references are published. This indicates the doi index number of the reference.

[0034] This step may also include determining the core journal list based on the seed journal iteration process, using seed journal iteration rounds. y Let the set of seed journals in the y-th iteration be denoted as .

[0035] S1: Select initial seed journals, including core journals in the subject area.

[0036] In this step, the initial seed journals, i.e., the set of journals in the 0th iteration, are denoted as: .

[0037] The initial selection of seed journals includes core journals in the subject area. For example, UT-DallasThe 24 journals on the list (UTD24, academic journals of the University of Texas at Dallas's School of Business) are widely recognized as authoritative journals in the field of management and hold an important position in management research; the five major journals in the field of economics, such as the Economic Quarterly (… Quarterly Journal of Economics (QJE)), American Economic Review ( American Economic Review (AER)), Journal of Political Economy ( Journal of Political Economy (JPE)), Econometrics ( Econometrica ) 、 Economic Research Review (Review of Economic Studies) These journals are generally considered authorities in the field, including high-quality economic research; the four major medical journals, such as the New England Journal of Medicine (NEM), etc. New England Journal of Medicine Journals such as The Lancet, JAMA, and BMJ are among the most influential journals in this field, covering a wide range of medical research areas. The selection of these journals is based on their authority and widespread recognition within their respective fields, serving as seed journals that guide the development of the discipline. Such a selection not only helps ensure broad disciplinary coverage but also leverages the authority and credibility provided by academically recognized journals.

[0038] It should be understood that in other implementations, more, fewer, or different journal types may be selected as initial seed journals as needed.

[0039] S2: Set the analysis time window, including setting the time window for retrieving published papers and the time window for retrieving references.

[0040] S2.1: Determine the time window for retrieving published papers.

[0041] In this step, the articles published in journals have a significant time sensitivity, therefore they need to be analyzed within a specific time window. For this purpose, the retrieval time window for published articles is set as [t, t+k]. Here, t represents the starting time point of the analysis, and k represents the length of the time window.

[0042] S2.2: Determine the reference retrieval time window.

[0043] References also have a time-sensitive nature and must be retrieved and analyzed within a specific timeframe. Therefore, the retrieval time window for references is set to [start, end]. Here, start represents the earliest year of publication for the reference, and end represents the latest year.

[0044] S3: Determine the candidate seed journals for the next iteration round based on the current set of seed journals.

[0045] This step can be based on the current set of seed journals for the paper. Determine the next round of seed journal set Candidates.

[0046] S3.1: Based on the current set of seed journals, retrieve the papers published in the current round of seed journals, including papers published in various sub-journals within the set time window for paper retrieval.

[0047] The seed journal iteration process in this implementation relies on the reference information of the papers published in the journals; therefore, it is first necessary to obtain the paper information of the seed journals in the current round. Under the analysis constraint of the time window [t, t+k], for the seed journal set of the current round (round y) Journal The paper published above is represented as

[0048] For example, as shown in Table 1, there are two seed journals for the current paper, namely Journal A and Journal B. Assuming the time window for retrieving published papers is one year, we select papers published in journals within the current year. This results in journal A publishing papers 1, 2, and 3 in that year. Journal B published papers including Paper 4 and Paper 5 that year, i.e. .

[0049] S3.2: Obtain the reference information of papers published in the current round of seed journals.

[0050] In this step, reference information within the reference retrieval time window [start, end] can be extracted and analyzed based on papers published in the current round of seed journals. The reference set is represented as .

[0051] As an example, in Table 1, the analysis time window for references is the past three years. Therefore, references published within the past three years of the paper's publication year are extracted. The final reference information for each paper is as follows:

[0052]

[0053]

[0054]

[0055] .

[0056] S3.3: Obtain the collection of journals from which the paper's references were published.

[0057] Each published paper's references include specific attributes such as author, publication year, journal, and .doi, represented as follows: Extract the journal information corresponding to the references of each published paper obtained in S3.2.

[0058] For example, in one embodiment, Table 1, The journal in which it was published is Journal A. The journals in which the references were published are classified as Journal D. Combining these results yields a set of journals for all references. Journal : .

[0059] S3.4: Select candidates for the next round of seed journals.

[0060] The next round of candidate journals is selected from the list of journals in the references. Selection criteria can include journal type (e.g., peer-reviewed academic journals, professional society journals, etc.). Candidates do not include non-paper publications such as yearbooks, conference proceedings, and books. Therefore, the final candidate journals shown in Table 1 are... .

[0061] Table 1: Schematic diagram of seed journal candidate selection

[0062] S4: Based on the seed journal candidates obtained for the next iteration round, calculate the seed journal candidate scores for the next iteration round.

[0063] S4.1: Obtain the total citation frequency of the seed journal candidates in the next iteration round.

[0064] Let COUNT be the total number of times a candidate object is cited by seed journals. Then, COUNT represents the number of times the candidate object is cited by all seed journals.

[0065] For example, in Table 2, if candidate A is cited a times by seed journal A and b times by seed journal B, then the total citation frequency of candidate A is a+b. If candidate B is cited c times by seed journal A, then the total citation frequency of candidate B is c. If candidate C is cited d times by seed journal B, then the total citation frequency of candidate C is d.

[0066] S4.2: Obtain the publication count of candidate journals for the next iteration round. This step obtains the publication count (SUM) of the candidate journals within the reference retrieval time window [start, end].

[0067] For example, in Table 2, the number of articles published in journal A is u, the number of articles published in journal B is m, and the number of articles published in journal C is n.

[0068] S4.3: Calculate the candidate scores for the seed journals in the next iteration round.

[0069] In this step, the total citation frequency of the candidate object is divided by the number of articles published by the candidate object to obtain the candidate object score S. That is:

[0070] As an example, in Table 2, the journal score of candidate A is (a+b) / u; Candidate B's journal score is c / m; The journal score for candidate C is d / n.

[0071] Table 2: Calculation process of candidate scores

[0072] S5: Filter to obtain the next round of seed journal set.

[0073] Based on the scores of the candidate seed journals for the next iteration, the set of seed journals for the next round is selected. .initialization .

[0074] S5.1: Selecting the next round of seed journals based on total citation frequency. In this step, the next round of seed journals can be selected based on the total citation frequency of the candidate seed journals in the next iteration. The selection method is to set a threshold for the total citation frequency and remove candidates whose total citation frequency is less than the threshold, thus obtaining the next round of seed journals after total frequency selection.

[0075] Set a threshold t1 for the total number of citations, from Candidates with a total citation frequency less than t1 are excluded:

[0076] Where t1 represents the total citation frequency threshold.

[0077] S5.2: Filtering the next round of seed journals based on candidate scores. In this step, for the next round of seed journals after total frequency filtering, the next round of seed journals can be filtered based on candidate scores. The filtering method is to set a candidate score threshold and remove candidate journals with scores lower than the threshold, thus obtaining the next round of seed journals after candidate score filtering.

[0078] Set a score threshold t2 for candidate objects, from Candidates with journal scores less than t2 were excluded:

[0079] Where t2 represents the score threshold of the candidate object.

[0080] S5.3: Selecting the next round of seed journals based on citation concentration. In this step, for the candidate journals selected by score, the next round of seed journals can be selected based on citation concentration. The concentration of the candidate journals is calculated, and seed journals with very high concentration are removed. The resulting set of seed journals is used as the next round of seed journals.

[0081] Considering candidate journals It is possible that the citations of a journal may all come from a small number of seed journals. The concentration of candidate journals is calculated, and journals with very high concentration are eliminated.

[0082] In this step, normalized variance can be used to calculate the concentration of each journal.

[0083] Specifically, firstly, for the next round of seed journals after the candidate scores are selected, the various sub-journals are calculated. Average frequency of citations by seed journals :

[0084] in, This indicates that a journal article was cited. The number of seed journals.

[0085] Next, calculate the various sub-journals. Normalized variance Concentration: .

[0086] If the concentration of candidate seed journals is greater than r ( r If it can be set to 0.95, it will be removed from the selected seed journals. r This indicates journal concentration. This filtering method can be expressed as: .

[0087] S6: Determine whether the next iteration is needed.

[0088] The iteration process terminates when no new candidate journals are added in the next iteration or when the set of candidate seed journals is empty.

[0089] If there are still new candidate journals, repeat steps S3 to S5.

[0090] S7: Construction of the core journal list. Based on the above iterative process, the seed journals obtained in the last iteration are selected as the final core journal list.

[0091] The resulting list of core journals can generate practical value on multiple levels: for academic researchers, it helps to efficiently track cutting-edge developments and optimize submission choices; for research management institutions, it can provide objective references for discipline evaluation, resource allocation, and talent assessment; and for the academic publishing field, it can assist journals in positioning strategies, understanding market trends, and promoting the optimization and improvement of literature databases and retrieval systems.

[0092] All of the above-mentioned optional technical solutions can be combined in any way to form optional embodiments of the present invention, and will not be described in detail here.

[0093] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0094] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order and method of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0095] It should be understood that the foregoing only illustrates some embodiments, and changes, modifications, additions, and / or variations can be made without departing from the scope and spirit of the disclosed embodiments. These embodiments are illustrative and not restrictive. Furthermore, the described embodiments relate to those currently considered most practical and preferred, and should be understood as not being limited to the disclosed embodiments, but rather intended to cover different modifications and equivalent arrangements included within the spirit and scope of those embodiments. Moreover, the various embodiments described above can be used in conjunction with other embodiments; for example, an aspect of one embodiment can be combined with an aspect of another embodiment to achieve yet another embodiment. Additionally, individual features or components of any given component can constitute another embodiment.

[0096] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A method for determining a list of core journals based on seed journals, characterized in that, include: S0: Establish the representation of the initial set, including establishing the seed journal set, the seed journal's published papers set, the published papers' reference set, and the reference's attribute set; S1: Selecting initial seed journals; S2: Set the analysis time window, including setting the time window for retrieving published papers and the time window for retrieving references; S3: Determine the candidate seed journals for the next iteration round based on the current seed journal set; for the first iteration round, the initial seed journals of S1 are used as the seed journal set for that round. S4: Based on the seed journal candidates obtained for the next iteration round, calculate the seed journal candidate scores for the next iteration round; S5: Based on the scores of the seed journal candidates for the next iteration round, select the seed journal set for the next round; S6: Iteration termination judgment. If there are no new candidates or the set of candidate seed journals is empty, the iteration terminates and the next step is executed. Otherwise, return to S3, use the seed journal set obtained in the next round as the current seed journal set in the next iteration round, and continue to execute the next iteration round; S7: Core Journal List Construction: The seed journals obtained in the last iteration round are used as the core journal list.

2. The method for determining a core journal list based on seed journals according to claim 1, characterized in that, In S0: The seed journal collection includes the founding year, type, number of articles published, and ISN number of various sub-journals; The collection of papers published in seed journals includes the authors, publication year, and DOI index number of each paper published in various seed journals; The reference list for each published paper includes the author, year of publication, journal, and DOI index number of each reference in the published paper.

3. The method for determining a core journal list based on seed journals according to claim 1, characterized in that, In S1: The initial seed journals include UTD24 in management, the top five journals in economics, or the top four journals in medicine.

4. The method for determining a core journal list based on seed journals according to claim 1, characterized in that, S3 include: S3.1: Based on the current set of seed journals, retrieve the papers published in the current round of seed journals, including the papers published in various sub-journals within the set time window for retrieving published papers. S3.2: Obtain the reference information of papers published in the current round of seed journals, including the reference information of papers published in various sub-journals within the set reference retrieval time window; S3.3: Obtain the collection of journals from which the references of each published paper are published; S3.4: Based on the set of journals that published the references of each paper, select the candidate journals for the next round of seed journals.

5. The method for determining a core journal list based on seed journals according to claim 1, characterized in that, S4 include: S4.1: Obtain the total frequency of citations by the seed journal candidates in the next iteration round; S4.2: Obtain the number of publications of the seed journal candidates for the next iteration within the reference retrieval time window; S4.3: Calculate the candidate scores for the seed journals in the next iteration round by dividing the total number of citations of each candidate journal by the number of articles published by that candidate journal.

6. The method for determining a core journal list based on seed journals according to claim 5, characterized in that, S5 include: S5.1: Based on the total frequency of citations of the candidate seed journals in the next iteration round, filter the set of seed journals for the next round. The filtering method is to set a threshold for the total frequency of citations and remove candidates whose total frequency of citations is less than the threshold, so as to obtain the seed journals for the next round after the total frequency filtering. S5.2: For the next round of seed journals after the total frequency screening, the next round of seed journals is screened based on the candidate object score. The screening method is to set a candidate object score threshold and remove candidate objects whose scores are less than the threshold to obtain the next round of seed journals after the candidate object score screening. S5.3: For the next round of seed journals after the candidate scores are filtered, the next round of seed journals is filtered based on the citation concentration of the journals. The concentration of the candidate journals is calculated, and the seed journals with a concentration higher than the set threshold are removed. The resulting seed journals are used as the set of seed journals for the next round.

7. The method for determining a core journal list based on seed journals according to claim 6, characterized in that, In S5.3: For the next round of seed journals after the candidate scores are filtered, calculate the average frequency of citations of each seed journal by the seed journals. Based on the average and total citation frequency of each sub-journal by the seed journal, the normalized variance concentration of each sub-journal is calculated. A concentration variance threshold is set. If the concentration of a seed journal exceeds the threshold, it is removed from the selected seed journals, and the resulting seed journals are used as the seed journal set for the next round.

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