International Journal of Nonlinear Analysis and Applications
Improvement in credit card fraud detection using ensemble classification technique and user data
Document Type : Research Paper
Author
College of Engineering, University of Babylon, Babylon, Iraq.
Abstract
Financial fraud is a serious problem in banking system. Credit card fraud is growing with increasing Internet usage, as it becomes very simple to collect user data and do fraud transaction. Fortunately, all records including fraud and legit transactions are present in the financial record. Improved data mining techniques are now capable to find solutions for such outlier detections. Financial data is freely available in many sources, but this data has some challenges like,1) the profile of legit and fraudulent behavior changes constantly, 2) there is a class imbalance problem in dataset, because less than 3% transaction are fraud, 3) transaction verification latency is also one more problem. All this data issues are handled using pre-processing techniques like cleaning and reduction. Main aim of this research is to find out, output attribute "is Fraud", with better time complexity. To this end, K-means, Random Forest and J48 algorithm is used, and its accuracy rates are compared to find best fit pre-processing and machine learning algorithm. It is observed that accuracy rate of Random Forest is 93.8% when both global and local dataset is used.
Keywords
management system, Case Study: Iranian Companies Based in Alborz Province, International Conference for
Modern Applications of Information and Communication Technology. Baghdad, Iraq, 2020.
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Volume 12, Issue 2
November 2021Pages 1255-1265
- Receive Date: 11 March 2021
- Revise Date: 09 June 2021
- Accept Date: 29 June 2021