.png){kind=icon}
Return
Fraud Detection in Banking Data by Machine Learning Techniques
.png){kind=icon}
OA
AI
DOI：10.1109/ACCESS.2022.3232287.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
As technology advanced and e-commerce services expanded, credit cards became one of the most popular payment methods, resulting in an increase in the volume of banking transactions. Furthermore, the significant increase in fraud requires high banking transaction costs. As a result, detecting fraudulent activities has become a fascinating topic. In this study, we consider the use of class weight-tuning hyperparameters to control the weight of fraudulent and legitimate transactions. We use Bayesian optimization in particular to optimize the hyperparameters while preserving practical issues such as unbalanced data. We propose weight-tuning as a pre-process for unbalanced data, as well as CatBoost and XGBoost to improve the performance of the LightGBM method by accounting for the voting mechanism. Finally, in order to improve performance even further, we use deep learning to fine-tune the hyperparameters, particularly our proposed weight-tuning one. We perform some experiments on real-world data to test the proposed methods. To better cover unbalanced datasets, we use recall-precision metrics in addition to the standard ROC-AUC. CatBoost, LightGBM, and XGBoost are evaluated separately using a 5-fold cross-validation method. Furthermore, the majority voting ensemble learning method is used to assess the performance of the combined algorithms. LightGBM and XGBoost achieve the best level criteria of ROC-AUC = 0.95, precision 0.79, recall 0.80, F1 score 0.79, and MCC 0.79, according to the results. By using deep learning and the Bayesian optimization method to tune the hyperparameters, we also meet the ROC-AUC = 0.94, precision = 0.80, recall = 0.82, F1 score = 0.81, and MCC = 0.81. This is a significant improvement over the cutting-edge methods we compared it to.
Keywords:
Fraud
Credit cards
Machine learning algorithms
Measurement
Deep learning
Bayes methods
Logistics
Bayesian optimization
data Mining
deep learning
ensemble learning
hyper parameter
unbalanced data
machine learning
Journal
IF:
3.6
Papers:
9.8W
Citations:
29.4W
Organization
Cited Papers
ShareSaveShareSaveAn Intelligent Approach to Credit Card Fraud Detection Using an Optimized Light Gradient Boosting Machine.png)
IEEE ACCESS
OAAI
IEEE ACCESSIF3.6
OAAIShareSavePalaeoenvironment and carbon isotope stratigraphy of Upper Proterozoic carbonates of the Yangtze PlatformNature
NatureIF0
PREAI
ShareSave
View more