Chungang Yan

LORI: A Learning-to-Rank-Based Integration Method of Location Recommendation

2019 · IEEE Transactions on Computational Social Systems

Location recommendation method is an important application in a location-based social network. At present, it is a trend to integrate different recommendation methods since they have their own advantages in capturing different preferences of users …

A Novel Information-Entropy-Based Feature Extraction Method for Transaction Fraud Detection

2021

Machine learning methods are widely used in transaction fraud detection. The information-entropy-based feature extraction methods have been employed to improve the machine learning methods for fraud detection. However, the following two aspects have been ignored …

Time-Aware Attention-Based Gated Network for Credit Card Fraud Detection by Extracting Transactional Behaviors

2022 · IEEE Transactions on Computational Social Systems

With the popularity of credit cards worldwide, timely and accurate fraud detection has become critically important to ensure the safety of their user accounts. Existing models generally utilize original features or manually aggregated features as …