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Abnormal object determination method and device, equipment and storage medium

An object determination and object technology, applied in the field of data processing, can solve the problems that abnormal objects cannot effectively describe or quantify objects, abnormal objects are not fully mined, and the accuracy of abnormal objects is not high, so as to increase the amount of auditing and auditing. Target coverage, accelerated audit discovery, automated high-accuracy effects

Pending Publication Date: 2021-12-07
TENCENT TECH (SHENZHEN) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The audit of abnormal objects is mainly the screening and determination of abnormal objects. For example, the screening and determination of abnormal merchants, the existing screening of abnormal objects and the determination of abnormal types generally require the participation of auditors, which cannot be automated. Moreover, the risk of objects cannot be effectively described or quantified in the screening of abnormal objects, which makes it difficult to determine abnormal objects in a large number of objects, and the accuracy of determining abnormal objects is not high
In addition, the existing method of anomaly classification using the isolation forest algorithm ignores the anomalies of the tail objects with lower outliers, and there is a risk that the anomalies are not fully mined

Method used

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  • Abnormal object determination method and device, equipment and storage medium
  • Abnormal object determination method and device, equipment and storage medium
  • Abnormal object determination method and device, equipment and storage medium

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Embodiment Construction

[0038] Various exemplary embodiments, features, and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numbers in the figures indicate functionally identical or similar elements. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0039] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments.

[0040] In addition, in order to better illustrate the present disclosure, numerous specific details are given in the following specific implementation manners. It will be understood by those skilled in the art that the present disclosure may be practiced without some of the specific details. In some instances, methods, means, componen...

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Abstract

The invention relates to an abnormal object determination method and device, equipment and a storage medium. The risk of the object is described by using the risk value of the attribute feature information of the object to generate the risk portrait of the object, so that the risk of the object can be effectively represented, and a gang object can be found; and the first preset number of objects screened by the isolated forest algorithm are screened again by using the risk portraits of the objects, so that high-risk objects can be screened out, isolated forest tail objects with potential abnormality can be found, and finally, the transaction portrait information of the objects is used for careful selection to determine abnormal objects, and the accuracy of abnormal object determination can be ensured.

Description

technical field [0001] The present disclosure relates to the field of data processing, and in particular to a method, device, equipment and storage medium for determining an abnormal object. Background technique [0002] The audit of abnormal objects is mainly the screening and determination of abnormal objects. For example, the screening and determination of abnormal merchants, the existing screening of abnormal objects and the determination of abnormal types generally require the participation of auditors, which cannot be automated. Moreover, the screening of abnormal objects cannot effectively describe or quantify the risks of objects, which makes it difficult to determine abnormal objects among a large number of objects, and the accuracy of determining abnormal objects is not high. In addition, the existing method of using the isolation forest algorithm for anomaly classification ignores the anomalies of the tail objects with lower outliers, and there is a risk that the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06K9/62
CPCG06Q10/0635G06F18/24323G06F18/2433
Inventor 王俊鹏叶龙陈遥烽李佳缪招兵李倩魏曼杨小宇
Owner TENCENT TECH (SHENZHEN) CO LTD
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