Xiwei Xu

2026

Towards Fair Large Language Model-based Recommender Systems without Costly Retraining.

Jin Li|Huilin Gu|Shoujin Wang|Qi Zhang|Shui Yu|Chen Wang|Xiwei Xu|Fang Chen

Proceedings of the ACM Web Conference 2026, WWW 2026, Dubai, United Arab Emirates, originally scheduled for April 13-17, 2026, rescheduled for June 29 - July 3, 2026.

Spiking Graph Predictive Coding for Reliable OOD Generalization.

Jing Ren|Jiapeng Du|Bowen Li|Ziqi Xu|Xin Zheng|Hong Jia|Suyu Ma|Xiwei Xu|Feng Xia

Proceedings of the ACM Web Conference 2026, WWW 2026, Dubai, United Arab Emirates, originally scheduled for April 13-17, 2026, rescheduled for June 29 - July 3, 2026.

MemoTime: Memory-Augmented Temporal Knowledge Graph Enhanced Large Language Model Reasoning.

Xingyu Tan|Xiaoyang Wang|Qing Liu|Xiwei Xu|Xin Yuan|Liming Zhu|Wenjie Zhang

Proceedings of the ACM Web Conference 2026, WWW 2026, Dubai, United Arab Emirates, originally scheduled for April 13-17, 2026, rescheduled for June 29 - July 3, 2026.

DrunkAgent: Stealthy Memory Corruption in LLM-Powered Recommender Agents.

Shiyi Yang|Zhibo Hu|Xinshu Li|Chen Wang|Tong Yu|Xiwei Xu|Liming Zhu|Lina Yao

Proceedings of the ACM Web Conference 2026, WWW 2026, Dubai, United Arab Emirates, originally scheduled for April 13-17, 2026, rescheduled for June 29 - July 3, 2026.

PRoH: Dynamic Planning and Reasoning over Knowledge Hypergraphs for Retrieval-Augmented Generation.

Xiangjun Zai|Xingyu Tan|Xiaoyang Wang|Qing Liu|Xiwei Xu|Wenjie Zhang

Proceedings of the ACM Web Conference 2026, WWW 2026, Dubai, United Arab Emirates, originally scheduled for April 13-17, 2026, rescheduled for June 29 - July 3, 2026.

2025

Paths-over-Graph: Knowledge Graph Empowered Large Language Model Reasoning.

Xingyu Tan|Xiaoyang Wang|Qing Liu|Xiwei Xu|Xin Yuan|Wenjie Zhang

Proceedings of the ACM on Web Conference 2025, WWW 2025, Sydney, NSW, Australia, 28 April 2025- 2 May 2025

2024

Attacking Visually-aware Recommender Systems with Transferable and Imperceptible Adversarial Styles.

Shiyi Yang|Chen Wang|Xiwei Xu|Liming Zhu|Lina Yao

Proceedings of the 33rd ACM International Conference on Information and Knowledge Management, CIKM 2024, Boise, ID, USA, October 21-25, 2024

Query2GMM: Learning Representation with Gaussian Mixture Model for Reasoning over Knowledge Graphs.

Yuhan Wu|Yuanyuan Xu|Wenjie Zhang|Xiwei Xu|Ying Zhang

Proceedings of the ACM on Web Conference 2024, WWW 2024, Singapore, May 13-17, 2024

2023

Contrastive Counterfactual Learning for Causality-aware Interpretable Recommender Systems.

Guanglin Zhou|Chengkai Huang|Xiaocong Chen|Xiwei Xu|Chen Wang|Liming Zhu|Lina Yao

Proceedings of the 32nd ACM International Conference on Information and Knowledge Management, CIKM 2023, Birmingham, United Kingdom, October 21-25, 2023

2021

Generative Inverse Deep Reinforcement Learning for Online Recommendation.

Xiaocong Chen|Lina Yao|Aixin Sun|Xianzhi Wang|Xiwei Xu|Liming Zhu

CIKM '21: The 30th ACM International Conference on Information and Knowledge Management, Virtual Event, Queensland, Australia, November 1 - 5, 2021

2017

AutoSVD++: An Efficient Hybrid Collaborative Filtering Model via Contractive Auto-encoders.

Shuai Zhang|Lina Yao|Xiwei Xu

Proceedings of the 40th International ACM SIGIR Conference on Research and Development in Information Retrieval, Shinjuku, Tokyo, Japan, August 7-11, 2017