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A Data Mining with Hybrid Approach Based Transaction Risk Score Generation Model (TRSGM) for Fraud Detection of Online Financial Transaction
| International Journal of Computer Applications |
| Foundation of Computer Science (FCS), NY, USA |
| Volume 16 - Number 1 |
| Year of Publication: 2011 |
| Authors: Dr. Jyotindra N. Dharwa, Dr. Ashok R. Patel |
10.5120/1977-2651
|
Dr. Jyotindra N. Dharwa, Dr. Ashok R. Patel . A Data Mining with Hybrid Approach Based Transaction Risk Score Generation Model (TRSGM) for Fraud Detection of Online Financial Transaction. International Journal of Computer Applications. 16, 1 ( February 2011), 18-25. DOI=10.5120/1977-2651
Abstract
We propose a unique and hybrid approach containing data mining techniques, artificial intelligence and statistics in a single platform for fraud detection of online financial transaction, which combines evidences from current as well as past behavior. The proposed transaction risk generation model (TRSGM) consists of five major components, namely, DBSCAN algorithm, Linear equation, Rules, Data Warehouse and Bayes theorem. DBSCAN algorithm is used to form the clusters of past transaction amounts of the customer, find out the deviation of new incoming transaction amount and finds cluster coverage. The patterns generated by Transaction Pattern Generation Tool (TPGT) are used in Linear equation along with its weightage to generate a risk score for new incoming transaction. The guidelines shown in various web sites, print and electronic media as indication of online fraudulent transaction for Credit Card Company is implemented as rules in TRSGM. In the first four components, we determine the suspicion level of each incoming transaction based on the extent of its deviation from good pattern. The transaction is classified as genuine, fraudulent or suspicious depending on this initial belief. Once a transaction is found to be suspicious, belief is further strengthened or weakened according to its similarity with fraudulent or normal transaction history using Bayes theorem.
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