All Stories

  1. Verifiable User Simulation for Search and Recommendation Systems

    Article • July 2026, ACM (Association for Computing Machinery)

    Chenglong Ma, ZIQI XU, Yongli Ren

  2. Mitigating Bias in Large Language Model Based Question Answering through Causal Front Door Prompting

    Article • July 2026, ACM (Association for Computing Machinery)

    ZIQI XU, Chenglong Ma, Yongli Ren, Jie Li, Mark Sanderson

  3. Performance-Driven QUBO for Recommender Systems on Quantum Annealers

    Article • ACM Transactions on Recommender Systems, May 2026, ACM (Association for Computing Machinery)

    Mark Sanderson, Yongli Ren, Jiayang Niu

  4. Unbiased Reasoning for Knowledge-Intensive Tasks in Large Language Models via Conditional Front-Door Adjustment

    Article • November 2025, ACM (Association for Computing Machinery)

    Renqiang Luo, Yongli Ren, ZIQI XU

  5. PUB: An LLM-Enhanced Personality-Driven User Behaviour Simulator for Recommender System Evaluation

    Article • July 2025, ACM (Association for Computing Machinery)

    ZIQI XU, Yongli Ren, Chenglong Ma

  6. Can Large Language Models Be a Good Evaluator for Review-based Product Question Answering?

    Article • May 2025, ACM (Association for Computing Machinery)

    Yongli Ren

  7. Towards Better Evaluation of Recommendation Algorithms with Bi-directional Item Response Theory

    Article • May 2025, ACM (Association for Computing Machinery)

    ZIQI XU, Yongli Ren, Chenglong Ma

  8. Explaining Recommendation Fairness from a User/Item Perspective

    Article • ACM Transactions on Information Systems, October 2024, ACM (Association for Computing Machinery)

    Yongli Ren, Mark Sanderson, Jie Li

  9. Temporal Conformity-aware Hawkes Graph Network for Recommendations

    Article • May 2024, ACM (Association for Computing Machinery)

    Chenglong Ma, Pablo Castells, Yongli Ren, Mark Sanderson

  10. Dynamic Bi-layer Graph Learning for Context-aware Sequential Recommendation

    Article • ACM Transactions on Recommender Systems, December 2023, ACM (Association for Computing Machinery)

    Yongli Ren, Rosni Lumbantoruan

  11. Multiple-level Point Embedding for Solving Human Trajectory Imputation with Prediction

    Article • ACM Transactions on Spatial Algorithms and Systems, May 2023, ACM (Association for Computing Machinery)

    Yongli Ren

  12. The Footprint of Factorization Models and Their Applications in Collaborative Filtering

    Article • ACM Transactions on Information Systems, October 2022, ACM (Association for Computing Machinery)

    JINZE Wang, Yongli Ren

  13. NEST

    Article • October 2022, ACM (Association for Computing Machinery)

    Yongli Ren, Mark Sanderson, Chenglong Ma, Pablo Castells

  14. How Collaborative Filtering Behaves When Groups of Users Suddenly Shift Preference?

    Article • July 2022, ACM (Association for Computing Machinery)

    Pablo Castells, Mark Sanderson, Yongli Ren, Chenglong Ma

  15. FairGAN: GANs-based Fairness-aware Learning for Recommendations with Implicit Feedback

    Article • April 2022, ACM (Association for Computing Machinery)

    Yongli Ren, Jie Li

  16. Translating Human Mobility Forecasting through Natural Language Generation

    Article • February 2022, ACM (Association for Computing Machinery)

    Yongli Ren, Flora Salim

  17. Popularity Bias in False-positive Metrics for Recommender Systems Evaluation

    Article • ACM Transactions on Information Systems, July 2021, ACM (Association for Computing Machinery)

    Elisa Mena-Maldonado, Pablo Castells, Yongli Ren, Mark Sanderson

  18. G-CREWE: Graph CompREssion With Embedding for Network Alignment

    Article • October 2020, ACM (Association for Computing Machinery)

    Flora Salim, Yongli Ren

  19. Joint Modelling of Cyber Activities and Physical Context to Improve Prediction of Visitor Behaviors

    Article • ACM Transactions on Sensor Networks, August 2020, ACM (Association for Computing Machinery)

    Flora Salim, Yongli Ren, Mark Sanderson

  20. Metrics Disagreement in Recommender Systems Evaluation

    Article • July 2020, ACM (Association for Computing Machinery)

    Elisa Mena-Maldonado, Yongli Ren, Pablo Castells, Mark Sanderson

  21. Intelligent Task Recognition: Towards Enabling Productivity Assistance in Daily Life

    Article • June 2020, ACM (Association for Computing Machinery)

    Flora Salim, Yongli Ren, Johann Trippas, Mark Sanderson, Damiano Spina

  22. What Will You Do for the Rest of the Day?

    Article • Proceedings of the ACM on Interactive Mobile Wearable and Ubiquitous Technologies, December 2018, ACM (Association for Computing Machinery)

    Flora Salim, Yongli Ren

  23. How People Use the Web in Large Indoor Spaces

    Article • November 2014, ACM (Association for Computing Machinery)

    Yongli Ren, Mark Sanderson