Fraudulent phone number identification method and system

Abstract

The embodiment of the invention provides a fraudulent phone number identification method and system. The identification method comprises the following steps of carrying out characteristic extraction on a call record and obtaining the call record after characteristic extraction, wherein the call record after characteristic extraction includes a vacant number ratio, a friend call ratio, and the entropy of phone numbers in unit time; and inputting the call record after characteristic extraction into a trained fraudulent phone identification model, and acquiring a fraudulent phone identification result corresponding to the call record, wherein the fraudulent phone identification model is trained through a gradient lifting decision tree algorithm. By using the fraudulent phone number identification method and system, whether a phone number is a fraudulent phone number can be accurately identified; and through arranging the model trained through the gradient lifting decision tree algorithm,the fraudulent phone number can be precisely identified.

Description

technical field [0001] The embodiments of the present invention relate to the field of communication network security, and more specifically, to a method and system for identifying fraudulent phone numbers. Background technique [0002] In recent years, the practice of using telephones to commit fraud and disseminate information such as violence, terror, and cults has exploded. Bad calls have become a pain point for the general public and a chronic social disease. In 2013, the amount of defrauded cases caused by bad calls reached 10 billion yuan; in 2014, the number of cases caused by bad calls increased greatly on the basis of the previous year; The defrauded amount has doubled on the basis of the previous year, and various cases caused by bad calls are shocking. Behind these losses is the black industry of communication information fraud. The entire black industry has formed an industrial chain with clear division of labor and efficient operation. From the perspective of ...

AI Technical Summary

Problems solved by technology

Bad calls not only caused the smog of the communication network and the deterioration of the ecology, but also caused huge property losses and even life safety to the people

[0004] At present

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