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Online transaction anti-fraud method and system

A transaction and transaction data technology, applied in the field of online transaction anti-fraud methods and systems, can solve the problems of poor online transaction fraud detection effect and poor GAN application effect, and achieve the effect of improving online transaction fraud detection effect.

Pending Publication Date: 2020-11-20
BEIJING INFORMATION SCI & TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide an online transaction anti-fraud method and system to solve the problems of poor detection effect of online transaction fraud and poor application effect of GAN in the field of discrete data

Method used

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  • Online transaction anti-fraud method and system
  • Online transaction anti-fraud method and system
  • Online transaction anti-fraud method and system

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Embodiment Construction

[0060] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. 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.

[0061] The purpose of the present invention is to provide an online transaction anti-fraud method, which can improve the effect of online transaction fraud detection without losing original information.

[0062] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0063] ...

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Abstract

The invention relates to an online transaction anti-fraud method and system. The method comprises the steps: obtaining original transaction data and noise; generating a Gunn Bell-generative adversarial network Gumbel-GAN model according to the original transaction data and the noise based on a long short-term memory LSTM model; generating virtual fraud data according to the Gumbel-GAN model; expanding the virtual fraud data to the original transaction data, and determining the expanded original transaction data; balancing the expanded original transaction data to generate balanced transactiondata; training a neural network model by taking the balanced transaction data as input and the data category as output to generate a transaction data evaluation model; obtaining online transaction data, and evaluating the data type of the online transaction data according to the transaction data evaluation model, wherein the data category comprises fraudulent data and normal data. On the premise that original information is not lost, the online transaction fraud detection effect can be improved.

Description

technical field [0001] The invention relates to the field of online transaction anti-fraud, in particular to an online transaction anti-fraud method and system. Background technique [0002] With the rapid development of science and technology and the world economy, the Internet has spread to every corner of the world. Internet finance has also entered a vigorous period of development, and has already had a huge impact and change on the entire world. Third-party payment services have become a part of people's lives, such as Alipay and WeChat Pay can be seen everywhere in China, and countless transactions have occurred on online trading platforms around the world. However, with the rapid development of third-party payment services, there are also various fraudulent crimes behind the scenes. As the world has entered the era of big data, personal information is easily leaked and obtained by others on the Internet, which makes online transactions have a certain risk of fraud. ...

Claims

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Application Information

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IPC IPC(8): G06Q40/04G06Q20/40G06N3/04G06N3/08
CPCG06Q40/04G06Q20/4016G06N3/049G06N3/08G06N3/047G06N3/045
Inventor 康海燕张浩
Owner BEIJING INFORMATION SCI & TECH UNIV
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