Gang fraud phone recognition method based on suspicion measurement

Abstract

The invention provides a gang fraud phone recognition method based on suspicion measurement, which adopts an unsupervised mode, utilizes call record information between phone numbers to define suspicion measurement for each phone number, and adopts a risk level quantification mode to recognize a gang fraud phone. According to the method, a subjective marking result of a user does not need to be introduced, defects caused by subjective judgment can be avoided, model training and online use can be completed within a short time, a simple and practical recognition method is provided for the user to suffer from group fraud, and the problem caused by lagging is effectively relieved.

Description

technical field [0001] The invention belongs to the field of computer information technology, and in particular relates to a method for identifying gang fraudulent calls based on suspiciousness measurement. Background technique [0002] With the rapid development of telecommunications technology, telecommunications fraud is showing a high incidence trend, and it is increasing year by year. For example, in 2017, the number of first-instance telecommunications and network fraud cases nationwide increased by 70.34% compared with 2016. Among the many forms of telecommunications fraud, gang fraud has developed rapidly in recent years due to its high deceptiveness and strong concealment, which seriously threatens people's property safety. In gang fraud calls, criminal gangs pretend to be different identities to lure and defraud the victim, making the victim easy to be deceived and suffer property losses. Therefore, the rapid and accurate identification of (gang) fraudulent calls ...

AI Technical Summary

Problems solved by technology

When the fraudulent method is highly deceptive, users are less likely to flag suspected fraudulent calls, resulting in poorer recognition results

[0007] 2. There is a hysteresis: due to the problems of missing labels, false labels, malicious labels, etc. in manual labeling, it often takes a certain amount of labeling results to take effect, and the identification effect on new fraudulent phone numbers is weak

[0008] 3. The identification effect of gang fraud is weak: due to the characteristics of high deception and strong concealment, gang fraud is the main form of telecommunications fraud at present

The current manual marking is mainly aimed at marking a single fraudulent call. For fraudulent gangs, if the fraud is successful, the defrauded phone number is usually not marked; fraudulent numbers, but the high-level fraudulent numbers have not been exposed, so it is impossible to identify and characterize the fraud gang as a whole

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