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Feature selection method and device, electronic equipment and medium

A feature selection and feature value technology, applied in the computer field, can solve the problems of retention, inability to guarantee valid information, feature information redundancy, etc., and achieve the effect of improving reliability.

Pending Publication Date: 2021-04-30
JINGDONG TECH HLDG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, in the process of implementing the concept of the present disclosure, the inventors found that the traditional method often improves the efficiency and effect of anomaly detection by introducing excessive information, but this method cannot guarantee the retention of effective information, and at the same time lead to feature information redundancy

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  • Feature selection method and device, electronic equipment and medium
  • Feature selection method and device, electronic equipment and medium
  • Feature selection method and device, electronic equipment and medium

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Embodiment Construction

[0023] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. It should be understood, however, that these descriptions are exemplary only, and are not intended to limit the scope of the present disclosure. In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the present disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concepts of the present disclosure.

[0024] The terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting of the present disclosure. The terms "comprising", "comprising", etc. used herein indicate the presence of stated features,...

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PUM

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Abstract

The invention provides a feature selection method. The method comprises the steps of obtaining behavior data of multiple users; converting the behavior data of each user in the plurality of users to obtain a plurality of feature vectors, the plurality of feature vectors having the same data structure and each dimension corresponding to one behavior feature; based on the plurality of feature vectors, performing non-Gaussian measurement and non-Gaussian robustness measurement on each behavior feature to obtain a corresponding measurement result; and based on the measurement result, selecting a behavior feature corresponding to the at least one dimension for detecting an abnormal user behavior. The invention further discloses a feature selection device, electronic equipment and a computer readable storage medium.

Description

technical field [0001] The present disclosure relates to the field of computer technology, and more specifically, to a feature selection method, device, electronic equipment and media. Background technique [0002] Anomaly detection has been widely used in data mining, financial anti-fraud and many other fields in the industry. In the field of anomaly detection, which features are selected for anomaly detection has always been one of the core factors that seriously affect the performance of algorithms. A good feature selection technique can only use limited features to detect the abnormal pattern of the target anomaly, thereby significantly improving the efficiency of anomaly detection and effectively improving the effect of anomaly detection. [0003] However, in the process of implementing the concept of the present disclosure, the inventors found that the traditional method often improves the efficiency and effect of anomaly detection by introducing excessive information...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62G06F16/9536
CPCG06F16/9536G06F18/211
Inventor 奚久洲程建波彭南博
Owner JINGDONG TECH HLDG CO LTD