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Feature mining method and device for classification label

A technology of classification labels and object classification, which is applied in the direction of instruments, character and pattern recognition, computer parts, etc., and can solve the problems of inability to explain and accurately analyze the recognition characteristics and recognition results of people with specific characteristics

Pending Publication Date: 2020-05-15
WEBANK (CHINA)
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Problems solved by technology

[0004] The present invention provides a feature mining method and device for classification labels, which are used to solve the problem that it is impossible to explain and accurately analyze the identification features and identification results of people with specific features

Method used

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  • Feature mining method and device for classification label
  • Feature mining method and device for classification label
  • Feature mining method and device for classification label

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Embodiment Construction

[0025] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0026] For ease of understanding, terms that may be involved in the embodiments of the present invention are defined and explained below.

[0027] SHAP Value: A model-independent interpretability analysis method based on cooperative game theory. Each prediction record has a corresponding shap value, and each feature also has its corresponding shap value. When the shap value is greater than 0, it means that the current features in the cu...

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Abstract

The invention relates to the field of finance technology, and discloses a feature mining method and device for a classification label. The method comprises the steps: obtaining a trained target classification model, and enabling the target classification model to carry out the training through a feature variable of a training object and a classification label of the training object, and obtaininga corresponding model parameter; obtaining a characteristic variable of the target object; determining a classification result contribution degree of each feature by utilizing an interpretation modelaccording to the feature variable of the target object and a trained target classification model; and determining classification interpretation information according to the classification result contribution degree, thereby solving the problem that the identification features and the identification results of the high-income crowd cannot be interpreted and analyzed.

Description

technical field [0001] The present invention relates to the technical field of big data of financial science and technology (Fintech), in particular to a feature mining method and device for classification labels. Background technique [0002] With the development of computer technology, more and more technologies (such as distributed architecture, cloud computing or big data) are applied in the financial field. The traditional financial industry is gradually transforming into financial technology, and big data technology is no exception. However, due to the security and real-time requirements of the financial and payment industries, higher requirements are also placed on big data technology. [0003] For the identification of groups with specific characteristics (such as high-income groups or low-income groups), at present, the feature importance analysis of the machine learning model is generally used to conduct preliminary feature screening, and then combined with manual ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62
CPCG06F18/214G06F18/241
Inventor 席云赖良魏江龙杨芳
Owner WEBANK (CHINA)
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