Guanjun Liu

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 …

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 …

The Adaptation of Concept Drift: A Fit Prediction Algorithm Based on Local Optimum

2023 · IEEE Transactions on Computational Social Systems

With the rapid development of Internet industry, the learning methods based on data stream have attracted more and more attention owing to their great application value in many industries such as banking, insurance, and telecom …

A Spatial-temporal Gated Network for Credit Card Fraud Detection

2023

Timely and accurate credit card fraud detection (CCFD) is concerned by all financial institutions. Existing CCFD methods generally employ aggregated or raw features as their representations to train their detection models. Yet such features tend …