World Wide Web

Support vector machine

AdaBoost

Computer science

Champion

Credit card

Payment

Hybrid learning

Physics

Mathematics

Optics

Political science

Credit card fraud

Domain (mathematical analysis)

Focus (optics)

Mathematical analysis

Artificial intelligence

Machine learning

The negative effect of financial crimes on financial institutions has grown dramatically over the years. To detect crimes such as credit card fraud, several single and hybrid machine learning approaches have been used. However, these approaches have significant limitations as no further investigation on different hybrid algorithms for a given dataset were studied. This research proposes and investigates seven hybrid machine learning models to detect fraudulent activities with a real word dataset. The developed hybrid models consisted of two phases, state-of-the-art machine learning algorithms were used first to detect credit card fraud, then, hybrid methods were constructed based on the best single algorithm from the first phase. Our findings indicated that the hybrid model Adaboost + LGBM is the champion model as it displayed the highest performance. Future studies should focus on studying different types of hybridization and algorithms in the credit card domain.

Credit Card Fraud Detection Using a New Hybrid Machine Learning Architecture