Xiaoxiao Xu

Learning Universal User Representations via Self-Supervised Lifelong Behaviors Modeling

2021 · arXiv (Cornell University)

Universal user representation is an important research topic in industry, and is widely used in diverse downstream user analysis tasks, such as user profiling and user preference prediction. With the rapid development of Internet service …

Learning Social Graph for Inactive User Recommendation

2024 · arXiv (Cornell University)

Social relations have been widely incorporated into recommender systems to alleviate data sparsity problem. However, raw social relations don't always benefit recommendation due to their inferior quality and insufficient quantity, especially for inactive users, whose …