Community partitioning method and device based on characteristic matching network

Abstract

The embodiment of the invention relates to the field of data processing and in particular relates to a community partitioning method and device based on a characteristic matching network, which are used for partitioning communities. According to the embodiment of the invention, the community partitioning method comprises the following steps: determining K-bit Hash vectors corresponding to each piece of account information according to pre-set K Hash functions; sequentially dividing the Hash vector corresponding to each account information into m=K / h types of sub-Hash vectors; aiming at each type, dividing the account information with the same sub-Hash vector into the same group; calculating the similarity among all the account information in the same group; if the similarity among all the account information is more than a threshold value, establishing an interconnection edge among all the account information, so as to form the characteristic matching network; carrying out the community partitioning on the account information according to the characteristic matching network, so as to carry out the community partitioning according to the partitioned community and abnormal communities are found.

Description

technical field [0001] The embodiments of the present invention relate to the field of data processing, and in particular to a method and device for community division based on a feature matching network. Background technique [0002] At present, the risk situation faced by the domestic credit card market is becoming more and more serious, and the cases of credit card cashing out, counterfeit card fraud, and card theft fraud are increasing. Specifically, credit card cashing out refers to cardholders obtaining cash after swiping their cards through false consumption transactions or colluding with merchants. Subsequent refunds or purchases of products that are easy to realize and then sell them to obtain cash, etc. Counterfeit card fraud refers to the fraudulent behavior of writing magnetic stripes in accordance with the magnetic stripe information format of bank cards, embossing or flat printing forged real and effective bank cards for transactions; card theft Fraud refers to...

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a community division method and device based on a feature matching network to solve the problem in the prior art that if data is subsequently added to the anti-fraud model, it is difficult to update the data of the anti-fraud model, and after clustering, the group The structures within and the relationships between structures remain difficult to describe

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