A screening method and device for advantageous subjects

Abstract

The present application discloses a method and device for screening dominant subjects, which are used to solve the technical problem that the existing screening methods cannot screen dominant subjects comprehensively and efficiently. The method includes: determining the measurable indicators of the subjects to be selected; arranging the subjects to be selected in order based on the measurable indicators, and recording the arrangement numbers corresponding to the subjects to be selected; scaling the measurable indicators of the subjects to be selected after the order is arranged to obtain the scaling indicators; calculating the slope between the scaling indicators corresponding to any two adjacent subjects to be selected; determining the absolute value of the slope, and determining the dominant subject based on the subject to be selected corresponding to the maximum absolute value of the slope. The present application realizes the process of efficiently and automatically determining the number of dominant subjects through the above method, which can effectively avoid the redundancy or omission of the screened dominant subjects, thereby ensuring the comprehensiveness of the screened dominant subjects.

Description

Technical Field

[0001] The present application relates to the technical field of data processing and analysis, and in particular to a method and device for screening a dominant subject. Background Art

[0002] Data processing is the collection, storage, retrieval, processing, transformation and transmission of data. It is a basic link in system engineering and automatic control and runs through all areas of social production and social life. Data analysis is a process of checking, cleaning, converting and modeling data. The purpose is to discover useful information, inform conclusions and support decision-making, making it more scientific.

[0003] At present, the common way to screen out advantageous entities such as leading entities or advantageous industries is to simply arrange the indicators in ascending or descending order and list the top ten, top fifty, etc. For example, the top 10 tax-paying enterprises in a certain city, the top 100 students in a certain school, the top 50 cities in a certain industry, etc. In some cases, this common list can basically meet the screening purpose, but this approach is a one-size-fits-all approach, and the number of lists is simply set to 10, 20, or 50, etc., which is not very interpretable, and it is difficult to avoid the problem of redundant or incomplete lists, resulting in one-sided and inefficient screening of advantageous entities, and reducing the screening effect of advantageous entities such as key industries, leading talents, and popular cities. Summary of the invention

[0004] The embodiments of the present application provide a method and device for screening dominant entities, so as to solve the technical problem that the existing screening methods cannot screen dominant entities comprehensively and efficiently.

[0005] On the one hand, an embodiment of the present application provides a method for screening dominant subjects, including: determining measurable indicators of the subjects to be selected; arranging the subjects to be selected in sequence based on the measurable indicators, and recording the arrangement numbers corresponding to the subjects to be selected; scaling the measurable indicators of the subjects to be selected after the sequential arrangement to obtain scaled indicators; calculating the slope between the scaled indicators corresponding to any two adjacent subjects to be selected; determining the absolute value of the slope, and determining the dominant subject based on the subject to be selected corresponding to the maximum absolute value of the slope.

[0006] The screening method provided in the embodiment of the present application can be implemented by any relevant measurable indicators and has strong universality. By calculating the slope (decline) between adjacent candidates after being arranged in sequence, the relative advantage between multiple candidates is measured, the number of advantageous candidates is automatically calculated and the screening process is completed. It has strong interpretability, high efficiency and ensures the comprehensiveness of the advantageous candidates.

[0007] In one implementation of the present application, the measurable indicators of the sequentially arranged candidates are scaled, specifically including: scaling the measurable indicators using the following formula: f(j)=ln((X(j)); wherein j represents any candidate; X(j) represents the measurable indicator corresponding to any candidate; and f(j) represents the scaled indicator corresponding to any candidate.

[0008] In the embodiment of the present application, the selected measurable indicators are scaled, which increases the adaptability of the screening method to different application scenarios. That is, even when the measurable indicators of the selected subjects vary greatly, it is possible to ensure accurate and comprehensive screening of advantageous subjects.

[0009] In one implementation of the present application, the measurable indicators include any one or more of the following: profit amount, transaction amount, and score.

[0010] In one implementation of the present application, the dominant subject is determined based on the candidate subject corresponding to the maximum absolute value of the slope, specifically including: determining the number of candidate subjects corresponding to the maximum absolute value; when the number of candidate subjects is 1, determining the arrangement sequence number of the candidate subject corresponding to the maximum absolute value; based on the arrangement sequence number, determining the dominant subject.

[0011] In one implementation of the present application, the dominant subject is determined based on the arrangement number, specifically including: determining the sequential arrangement of the subjects to be selected; when the sequential arrangement is arranged from large to small, determining the subjects to be selected corresponding to multiple arrangement numbers less than or equal to the arrangement number as the dominant subject; and, when the sequential arrangement is arranged from small to large, determining the subjects to be selected corresponding to multiple arrangement numbers greater than or equal to the arrangement number as the dominant subject.

[0012] The screening method provided in the embodiment of the present application, when it is determined that there is only one maximum absolute value of the slope, directly screens out the advantageous subjects based on the candidate subjects corresponding to the maximum absolute value of the slope, thereby avoiding redundancy or omission of the selected advantageous subjects, thereby ensuring the comprehensiveness of the screened advantageous subjects.

[0013] In one implementation of the present application, the method also includes: determining that the number of candidates corresponding to the maximum absolute value is greater than 1; determining the arrangement numbers corresponding to the multiple candidates corresponding to the maximum absolute value; when the sequential arrangement method corresponding to the candidates is from large to small, determining the smallest arrangement number among the arrangement numbers corresponding to the multiple candidates as the critical number; and determining the candidates corresponding to the multiple arrangement numbers that are less than or equal to the critical number as the dominant subjects.

[0014] In one implementation of the present application, the method also includes: when the sequential arrangement corresponding to the selected subjects is from small to large, determining the maximum arrangement number among the arrangement numbers corresponding to the multiple selected subjects as the critical number; and determining the selected subjects corresponding to multiple arrangement numbers greater than or equal to the critical number as the dominant subjects.

[0015] In the screening method provided in the embodiment of the present application, when there are multiple candidates that all correspond to the maximum absolute value of the slope, it means that there is a large gap near the multiple candidates. At this time, according to the order of the candidates, the critical sequence number is determined, and the first or last candidate with the largest absolute value of the slope among the candidates is found, and then the dominant subject is screened out, thereby ensuring the accuracy of the screened dominant subject and avoiding the adverse effects of other candidates with the largest absolute value of the slope on the screening process.

[0016] In one implementation of the present application, after obtaining the scaling index, the method further includes: determining a preset upper limit on the number of the dominant subjects; and when the order of the subjects to be selected is arranged from large to small, calculating the slope between multiple subjects to be selected whose arrangement numbers are less than or equal to the preset upper limit.

[0017] In one implementation of the present application, the selected entities include selected enterprises and selected industries; wherein the selected enterprises are several enterprises within any of the selected industries; and the selected industries are several industries within any of the selected enterprises.

[0018] On the other hand, an embodiment of the present application further provides a device for screening a dominant subject, comprising: a processor; and a memory on which executable code is stored, and when the executable code is executed, the processor executes a method for screening a dominant subject as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0020] Figure 1 A flow chart of a screening method for an advantageous subject provided in an embodiment of the present application;

[0021] Figure 2 A schematic diagram of the sales volume of donkey-hide gelatin in various districts and counties provided for the embodiments of this application;

[0022] Figure 3 A schematic diagram of negative slope values ​​for the TOP200 counties and districts with the highest sales of donkey-hide gelatin provided in the embodiments of this application;

[0023] Figure 4A schematic diagram of the internal structure of a screening device of an advantageous subject provided in an embodiment of the present application. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0025] Scientific screening of advantageous entities has a wide range of application scenarios. For example, in the field of regional planning, the formulation of regional development strategies often cannot avoid the selection of key development zones and key industries; in the field of e-commerce, based on the sales data of online retail platforms, analyzing the existing or potential key sales counties and districts corresponding to each category is the basis for the platform to determine the objects of network resource inclination and the key cooperation industries with different counties and districts.

[0026] However, existing screening technologies or methods have problems such as poor interpretability, failure to take into account or difficulty in clarifying key concepts such as "head advantage" and "obvious advantage"; and the problem that decision makers lack prior information on the exact number of dominant entities before screening. These problems easily lead to the screening of dominant entities being incomplete and the screening process being inefficient.

[0027] In order to solve the above technical problems, an embodiment of the present application provides a method for screening dominant subjects, which screens out dominant subjects by calculating the maximum absolute value of the slope between the scaling indicators corresponding to the selected subjects, thereby avoiding redundancy or omission problems in the screening process of dominant subjects and ensuring the comprehensiveness and accuracy of the screened dominant subjects.

[0028] The technical solution proposed in the embodiments of the present application is described in detail below with reference to the accompanying drawings.

[0029] Figure 1 A flow chart of a screening method for an advantageous subject provided in an embodiment of the present application. Figure 1 As shown, the screening method mainly includes the following processes:

[0030] Step 101: Determine measurable indicators of the subject to be selected.

[0031] The advantageous subject screening method provided in the embodiment of the present application first evaluates and screens various indicators corresponding to the selected subjects before screening the advantageous subjects, so as to determine measurable indicators that can be used to screen the advantageous subjects.

[0032] In one embodiment of the present application, the measurable indicators include any one or more of the following: profit amount, transaction amount, and score. It is clear to those skilled in the art that in actual application, the measurable indicators can be determined according to the actual properties of the subject to be selected, and are not limited to the above indicators given in the embodiment of the present application.

[0033] It should be noted that the subject to be selected in the embodiment of the present application can be a company to be selected or an industry to be selected. The company to be selected refers to multiple companies in a certain industry to be selected; the industry to be selected refers to multiple business industries involved in a certain company to be selected.

[0034] Step 102: Based on the measurable indicators, the subjects to be selected are arranged in order.

[0035] Based on the measurable indicators selected in step 101, the subjects to be selected are arranged in order, wherein the order can be arranged from large to small or from small to large.

[0036] Specifically, the measurable indicators are arranged from large to small, or the measurable indicators are arranged from small to large, so as to arrange the subjects to be selected, and after the arrangement is completed, the arrangement number corresponding to each subject to be selected is recorded.

[0037] For example, when selecting national civil servants based on national examination scores, each candidate to be selected is a candidate, and the national examination score corresponding to each candidate is a measurable indicator. The candidates are arranged in order based on the national examination scores, that is, ranked.

[0038] Step 103: scaling the sequentially arranged candidate subjects to obtain a scaling index.

[0039] In the embodiment of the present application, after the candidates are arranged in sequence, the measurable indicators of the arranged candidates are scaled to obtain scaled indicators, thereby increasing the adaptability of the screening method to different application scenarios and ensuring the accuracy of the screening results.

[0040] In one embodiment of the present application, scaling the measurable indicators of the subject to be selected can be achieved by the following formula:

[0041] f(j)=ln(X(j))

[0042] Among them, j represents any candidate subject; X(j) represents the measurable indicator corresponding to any candidate subject; f(j) represents the scaling indicator corresponding to any candidate subject.

[0043] It should be noted that the above formula in the embodiment of the present application is only used to provide exemplary description. In the actual process of screening the dominant subject, those skilled in the art may also select other appropriate scaling algorithms to scale the measurable indicators of the subject to be selected according to the actual scenario and situation, and the embodiment of the present application does not limit this.

[0044] Step 104: Calculate the slope between the scaling indices corresponding to any two adjacent subjects to be selected.

[0045] In actual dominant subject screening application scenarios, a clear screening number is usually required. To improve accuracy, after determining the scaling index of the subject to be selected, the embodiment of the present application will also determine the upper limit of the preset number of dominant subjects in the embodiment of the present application, that is, determine the upper limit of the number of subjects screened out as dominant subjects from the subject to be selected.

[0046] It is worth mentioning that the screening method provided in the embodiment of the present application has a particularly loose requirement for the upper limit. Based on the following reasonable understanding, the value can even be set to 50% of the total number of subjects to be selected: the dominant subjects should all fall into the top 50% of the subjects to be selected, otherwise, the measurable indicators or scaling indicators between the subjects to be selected are too average, and there is no advantage. According to past experience, when there is no prior knowledge of the upper limit of the preset number of dominant subjects, it can be set as follows: the upper limit of the preset number = 10% of the number of subjects to be selected.

[0047] Furthermore, after determining the preset upper limit of the number of dominant subjects and the scaling indexes of the subjects to be selected, the slope between the scaling indexes of any two adjacent subjects to be selected is calculated according to the following two methods.

[0048] Method 1: Consider the order of the subjects to be selected. If the order of the subjects to be selected is arranged from large to small, that is, the higher the scaling index, the more advantageous the subject to be selected is. At this time, a critical subject is determined according to the preset upper limit of the number of advantageous subjects. It should be noted that the arrangement sequence number of the critical subject is equal to the preset upper limit. For example, if the preset upper limit is 5, the subject with the arrangement sequence number 5 in the subjects to be selected arranged from large to small is selected as the critical subject.

[0049] Furthermore, the absolute values ​​of slopes between multiple candidate subjects whose sequence numbers are less than or equal to the critical subject are calculated, that is, the absolute values ​​of slopes between adjacent scaling indicators of five candidate subjects whose sequence numbers are 1-5 are calculated.

[0050] Method 2: Without considering the order of the candidate subjects, the absolute value of the slope between the scaling indicators of two adjacent candidate subjects is directly calculated.

[0051] It should be noted that, in the actual screening process, those skilled in the art can arbitrarily select existing algorithms or formulas to calculate the slope, and the present application embodiment does not limit this. For example, the present application embodiment can calculate the slope by the following formula:

[0052]

[0053] Among them, f(j) represents the scaling index of the candidate subject j; f(j+1) represents the scaling index of the candidate subject j+1; and g(j) represents the corresponding slope between the candidate subject j and the candidate subject j+1.

[0054] When the measurable indicator is scaled using the scaling algorithm f(j)=ln(X(j)), the above slope becomes:

[0055]

[0056] Step 105: Calculate the absolute value of the slope, and determine the dominant subject based on the candidate subject corresponding to the maximum absolute value of the slope.

[0057] After the slope calculation is completed, the maximum absolute value of the slope is determined, and the dominant subject is determined based on the candidate subject corresponding to the maximum absolute value of the slope. Because there may be multiple candidate subjects corresponding to the same maximum absolute value of the slope, before the dominant subject screening is performed, the number of candidate subjects corresponding to the maximum absolute value of the slope is first determined.

[0058] Furthermore, when the number of candidates corresponding to the maximum absolute value of the slope is 1, that is, there is only one candidate corresponding to the maximum absolute value of the slope, the dominant subject is determined according to the sequential arrangement of the candidates and the arrangement sequence number of the candidates.

[0059] Specifically, when the order of the candidate subjects is arranged from large to small, the candidate subjects corresponding to the multiple arrangement numbers less than or equal to the arrangement number of the candidate subject are determined as the dominant subject. That is, the multiple candidate subjects that are arranged before the candidate subject corresponding to the maximum absolute value of the slope are determined as the dominant subject.

[0060] Furthermore, when the order of the candidate subjects is arranged from small to large, the candidate subjects corresponding to the plurality of arrangement numbers greater than or equal to the arrangement number of the candidate subject are determined as the dominant subject. That is, the plurality of candidate subjects arranged after the candidate subject corresponding to the maximum absolute value of the slope are determined as the dominant subject.

[0061] Furthermore, when the number of candidates corresponding to the maximum absolute value of the slope is greater than 1, that is, when there are multiple candidates corresponding to the maximum absolute value of the slope, the dominant subject is determined according to the arrangement numbers of the multiple candidates and the sequential arrangement of the candidates.

[0062] Specifically, when the order of the selected subjects is arranged from large to small, the smallest arrangement number among the arrangement numbers corresponding to multiple selected subjects is determined as the critical number; the selected subjects corresponding to multiple arrangement numbers less than or equal to the critical number are determined as the dominant subjects.

[0063] Also, when the order of the selected subjects is arranged from small to large, the largest arrangement number among the arrangement numbers corresponding to the multiple selected subjects is determined as the critical number; the selected subjects corresponding to the multiple arrangement numbers greater than or equal to the critical number are determined as the dominant subjects.

[0064] It should be noted that when a preset upper limit on the number of selected advantageous entities is defined, the number of advantageous entities screened out above should be less than or equal to the preset upper limit.

[0065] At this point, the screening process of advantageous entities is completed.

[0066] In order to better illustrate the advantageous subject screening method provided in the embodiments of the present application, the following examples are also provided in the embodiments of the present application.

[0067] This example uses an application scenario in online retail data analysis as an example: based on the online retail sales of donkey-hide gelatin in various counties across the country from July 2018 to July 2019 (a measurable indicator), determine which counties (selected entities) have national sales advantages in donkey-hide gelatin. The main steps are as follows:

[0068] The first step is to take the upper limit of the number of dominant entities M = 200;

[0069] The second step is to rank the counties in descending order according to their donkey-hide gelatin sales (the higher the sales, the more advantageous the county); for ease of description, the sales of the jth county is recorded as X(j). Figure 2 shown.

[0070] The third step is to set f(j) = ln(X(j)), scale the sales index, and calculate the slope of the line between point (j, f(j)) and point (j+1, f(j+1)):

[0071]

[0072] And solve the following optimization problem;

[0073]

[0074] Let j0 be the optimal solution of the above optimization problem. Then the largest gap between the counties with adjacent donkey-hide gelatin sales rankings is generated between the j0th and jth counties. 0+1The top j0 counties are all higher than the jth 0+1 The districts and counties named after it have absolute advantages.

[0075] In this case, the actual calculation result is j0=2, that is, the maximum value of the negative slope -g(j) appears between the second candidate and the third candidate, as shown in Figure 3 As shown. The top two counties are the advantageous counties for donkey-hide gelatin sales, namely Dong'e County, Liaocheng City, Shandong Province and Dongchangfu District, Liaocheng City, Shandong Province. The "Dong'e Ejiao" brand is well-known. Dong'e County and Dongchangfu District are adjacent to each other and are both major production areas of donkey-hide gelatin and donkey-hide gelatin products, which confirms the accuracy of the screening method provided in the embodiment of this application.

[0076] The above is a method embodiment provided by the present application. Based on the same inventive concept, the present application embodiment also provides a screening device with an advantageous main body, whose internal structure is as follows: Figure 4 shown.

[0077] Figure 4 This is a schematic diagram of the internal structure of a screening device of an advantageous subject provided in an embodiment of the present application. Figure 4 As shown, the device includes: a processor 401; and a memory 402, on which executable codes are stored. When the executable codes are executed, the processor 401 executes a method for screening an advantageous subject as described above.

[0078] In one embodiment of the present application, processor 401 is used to determine measurable indicators of the subject to be selected; and based on the measurable indicators, the subjects to be selected are arranged in sequence, and the arrangement numbers corresponding to the main subjects to be selected are recorded; and it is used to scale the measurable indicators of the subjects to be selected after the sequence arrangement to obtain the scaled indicators, and calculate the slope between the scaled indicators corresponding to any two adjacent subjects to be selected; it is also used to determine the absolute value of the slope, and determine the dominant subject based on the subject to be selected corresponding to the maximum absolute value of the slope.

[0079] The screening method and device of the advantageous subject provided in the embodiments of the present application have the following technical effects:

[0080] On the one hand, compared with the general screening methods that are not easily explainable and fail to take into account or are difficult to clarify key concepts such as "head advantage" and "obvious advantage", the screening method provided in the embodiment of the present application first introduces the concept of slope in mathematics, and uses the absolute value of the slope (e.g., negative slope -g(j)) between adjacent subjects arranged in sequence (e.g., in descending order) to measure the degree of advantage, and makes a reasonable characterization of "head advantage" and "obvious advantage"; then the problem of screening advantageous subjects in different scenarios is summarized as solving the following system:

[0081]

[0082] Assuming the optimal solution j = j0, the largest gap between adjacent candidates appears between the j0th and jth candidates. 0+1 Among the candidates, the first j0 candidates are all better than the jth 0+1 The candidate subjects after the first position have an absolute advantage. The screening method provided in the embodiment of the present application uses the position where the maximum absolute value of the slope (for example, the negative slope -g(j)) first appears to circle the dominant subject: the candidate subjects at this position and before this position are the dominant subjects, which is highly interpretable and easy to operate.

[0083] On the other hand, the screening method provided in the embodiment of the present application does not require the decision maker to provide prior information about the exact number of dominant subjects. The screening method calculates the position where the maximum absolute value of the slope first appears to give the number of dominant subjects that are finally selected. This mechanism of automatically determining the number of dominant subjects can also effectively avoid the problem of redundant or missing dominant subjects in the selection.

[0084] In addition, the scaling of measurable indicators increases the applicability of this screening method to different application scenarios.

[0085] Each embodiment in this application is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0086] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0087] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A method for screening a dominant subject, characterized in that: The method comprises: Determine measurable indicators of the subject to be selected, wherein the measurable indicators include any one or more of the following: profit, transaction volume, and score; the subject to be selected includes a selected enterprise and a selected industry, the selected enterprise is a number of enterprises in any of the selected industries, and the selected industry is a number of industries in any of the selected enterprises; Based on the measurable indicators, the subjects to be selected are arranged in order, and the arrangement numbers corresponding to the subjects to be selected are recorded; Scaling the measurable indicators of the sequentially arranged candidate subjects includes: using the following formula Scaling the measurable indicator, wherein j represents any subject to be selected, X(j) represents the measurable indicator corresponding to any subject to be selected, and f(j) represents the scaling indicator corresponding to any subject to be selected; Calculating the slope between the scaling indicators corresponding to any two adjacent selected subjects, including: using formula g Calculate the slope, where g represents the slope between the scaling index corresponding to candidate subject j and the scaling index corresponding to candidate subject j+1; The absolute value of the slope is determined, and the dominant subject is determined based on the candidate subject corresponding to the maximum absolute value of the slope.

2. A method for screening a dominant subject according to claim 1, characterized in that: Based on the candidate subject corresponding to the maximum absolute value of the slope, determining the dominant subject specifically includes: Determine the number of subjects to be selected corresponding to the maximum absolute value; When the number of the subject to be selected is 1, determining the arrangement sequence number of the subject to be selected corresponding to the maximum absolute value; Based on the arrangement sequence number, the dominant subject is determined.

3. A method for screening a dominant subject according to claim 2, characterized in that: Based on the arrangement sequence number, determining the dominant subject specifically includes: Determine the order of the subjects to be selected; When the order arrangement is from large to small, the candidate subjects corresponding to the plurality of arrangement numbers less than or equal to the arrangement number are determined as the dominant subjects; And, when the sequential arrangement is arranged from small to large, the candidate subjects corresponding to multiple arrangement numbers greater than or equal to the arrangement number are determined as dominant subjects.

4. A method for screening a dominant subject according to claim 2, characterized in that: The method further comprises: Determine that the number of subjects to be selected corresponding to the maximum absolute value is greater than 1; Determine the arrangement sequence numbers corresponding to the plurality of candidates corresponding to the maximum absolute value; In the case where the order of the subjects to be selected is arranged from large to small, determining the smallest order number among the order numbers corresponding to the multiple subjects to be selected as the critical order number; The candidate subjects corresponding to the plurality of arrangement numbers less than or equal to the critical number are determined as the dominant subjects.

5. A method for screening a dominant subject according to claim 4, characterized in that: The method further comprises: In the case where the order of the subjects to be selected is arranged from small to large, determining the largest order number among the order numbers corresponding to the multiple subjects to be selected as the critical order number; The candidate subjects corresponding to the plurality of arrangement numbers greater than or equal to the critical number are determined as the dominant subjects.

6. A method for screening a dominant subject according to claim 1, characterized in that: After obtaining the scaling indicator, the method further includes: Determining a preset upper limit on the number of the dominant entities; When the order of the subjects to be selected is arranged from large to small, the slope between a plurality of subjects to be selected whose arrangement numbers are less than or equal to the upper limit of the preset number is calculated.

7. A screening device for a dominant subject, characterized in that: The device comprises: processor; and a memory having executable codes stored thereon, which, when the executable codes are executed, enable the processor to execute a method for screening an advantageous subject as described in any one of claims 1-6.

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