A Novel text2IMG Mechanism of Credit Card Fraud Detection: A Deep Learning Approach

被引:29
作者
Alharbi, Abdullah [1 ]
Alshammari, Majid [1 ]
Okon, Ofonime Dominic [2 ]
Alabrah, Amerah [3 ]
Rauf, Hafiz Tayyab [4 ]
Alyami, Hashem [5 ]
Meraj, Talha [6 ]
机构
[1] Taif Univ, Coll Comp & Informat Technol, Dept Informat Technol, At Taif 21944, Saudi Arabia
[2] Univ Uyo, Fac Engn, Dept Elect Elect & Comp Engn, Uyo 520103, Nigeria
[3] King Saud Univ, Coll Comp & Informat Sci, Dept Informat Syst, Riyadh 11451, Saudi Arabia
[4] Staffordshire Univ, Ctr Smart Syst AI & Cybersecur, Stoke On Trent ST4 2DE, Staffs, England
[5] Taif Univ, Coll Comp & Informat Technol, Dept Comp Sci, At Taif 21944, Saudi Arabia
[6] COMSATS Univ Islamabad Wah Campus, Dept Comp Sci, Wah Cantt 47040, Pakistan
关键词
big data; credit card fraud; cyber security; deep learning; machine learning; IMBALANCED CLASSIFICATION; ENSEMBLE;
D O I
10.3390/electronics11050756
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
Online sales and purchases are increasing daily, and they generally involve credit card transactions. This not only provides convenience to the end-user but also increases the frequency of online credit card fraud. In the recent years, in some countries, this fraud increase has led to an exponential increase in credit card fraud detection, which has become increasingly important to address this security issue. Recent studies have proposed machine learning (ML)-based solutions for detecting fraudulent credit card transactions, but their detection scores still need improvement due to the imbalance of classes in any given dataset. Few approaches have achieved exceptional results on different datasets. In this study, the Kaggle dataset was used to develop a deep learning (DL)-based approach to solve the text data problem. A novel text2IMG conversion technique is proposed that generates small images. The images are fed into a CNN architecture with class weights using the inverse frequency method to resolve the class imbalance issue. DL and ML approaches were applied to verify the robustness and validity of the proposed system. An accuracy of 99.87% was achieved by Coarse-KNN using deep features of the proposed CNN.
引用
收藏
页数:18
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