Ziqi Xu

2026

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Verifiable User Simulation for Search and Recommendation Systems.
Chenglong Ma|Xinye Wanyan|Danula Hettiachchi|Ziqi Xu|Yongli Ren|Jeffrey Chan
Proceedings of the 49th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2026, MelbourneVICAustralia, July 20-24, 2026
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ExODRec: An Explainable Framework for Outlier Detection Model Recommendation.
Saba Fathi Rabooki|Ziqi Xu|Hao Peng|Elham Naghizade|Ziqi Xu|Hao Peng
Proceedings of the 49th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2026, MelbourneVICAustralia, July 20-24, 2026
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Task-Aware Automated User Profile Generation for Recommendation Simulation Using Large Language Models.
Jiao Li|Xinye Wanyan|Chenglong Ma|Xing Xu|Danula Hettiachchi|Jiao Li|Chenglong Ma|Ziqi Xu|Wei Yu|Xing Xu|Danula Hettiachchi|Jeffrey Chan|Fumin Shen|Ziqi Xu|Wei Yu|Jeffrey Chan|Fumin Shen
Proceedings of the 49th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2026, MelbourneVICAustralia, July 20-24, 2026
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Mitigating Bias in Large Language Model Based Question Answering through Causal Front Door Prompting.
Ziqi Xu|Ellen M. Voorhees|Yaqi Yang|Steven M. Beitzel|Ellen M. Voorhees|Steven M. Beitzel|Jie Li|Eric C. Jensen|Ziqi Xu|Yaqi Yang|Abdur Chowdhury|Chenglong Ma|Jie Li|Eric C. Jensen|David A. Grossman|Abdur Chowdhury|Chenglong Ma|Jeffrey Chan|Ophir Frieder|Mark Sanderson|Jeffrey Chan|David A. Grossman|Ophir Frieder|Mark Sanderson|Xin Zheng|Yongli Ren
Proceedings of the 49th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2026, MelbourneVICAustralia, July 20-24, 2026
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Energy-Efficient Training-Free Zero-Inflation Correction for Rainfall Forecasting with Time-Series Foundation Models.
Wentao Gao|Xiaojing Du|Xiongren Chen|Yifan Guo|Andres Mauricio Cifuentes Bernal|Renqiang Luo|Ziqi Xu
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.
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STELA: Spatiotemporal Forecasting via Graph Learning and Entropy-Guided LLM Adaptation.
Tiantian Huang|Yue Li|Wei Shao|Ziqi Xu|Qipeng Song|Hui Li
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.
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FairGE: Fairness-Aware Graph Encoding in Incomplete Social Networks.
Renqiang Luo|Huafei Huang|Tao Tang|Jing Ren|Ziqi Xu|Mingliang Hou|Enyan Dai|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.
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FairGU: Fairness-aware Graph Unlearning in Social Networks.
Renqiang Luo|Yongshuai Yang|Huafei Huang|Qing Qing|Mingliang Hou|Ziqi Xu|Yi Yu|Jingjing Zhou|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.
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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.
doi dblp
When to Invoke: Refining LLM Fairness with Toxicity Assessment.
Jing Ren|Bowen Li|Ziqi Xu|Renqiang Luo|Shuo Yu|Xin Ye|Haytham Fayek|Xiaodong Li|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.
doi dblp
When to Trust: A Causality-Aware Calibration Framework for Accurate Knowledge Graph Retrieval-Augmented Generation.
Jing Ren|Bowen Li|Ziqi Xu|Xikun Zhang|Haytham Fayek|Xiaodong Li
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.
doi dblp
MCLMR: A Model-Agnostic Causal Learning Framework for Multi-Behavior Recommendation.
Ranxu Zhang|Junjie Meng|Ying Sun|Ziqi Xu|Bing Yin|Hao Li|Yanyong Zhang|Chao Wang
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.
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Harnessing LLM for Noise-Robust Cognitive Diagnosis in Web-Based Intelligent Education Systems.
Guixian Zhang|Guan Yuan|Ziqi Xu|Yanmei Zhang|Jing Ren|Zhenyun Deng|Debo Cheng
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

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Revisiting Pre-processing Group Fairness: A Modular Benchmarking Framework.
Brodie Oldfield|Ziqi Xu|Sevvandi Kandanaarachchi
Proceedings of the 34th ACM International Conference on Information and Knowledge Management, CIKM 2025, Seoul, Republic of Korea, November 10-14, 2025
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Temporal-Aware User Behaviour Simulation with Large Language Models for Recommender Systems.
Xinye Wanyan|Danula Hettiachchi|Chenglong Ma|Ziqi Xu|Jeffrey Chan
Proceedings of the 34th ACM International Conference on Information and Knowledge Management, CIKM 2025, Seoul, Republic of Korea, November 10-14, 2025
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Unbiased Reasoning for Knowledge-Intensive Tasks in Large Language Models via Conditional Front-Door Adjustment.
Bo Zhao|Yinghao Zhang|Ziqi Xu|Yongli Ren|Xiuzhen Zhang|Renqiang Luo|Zaiwen Feng|Feng Xia
Proceedings of the 34th ACM International Conference on Information and Knowledge Management, CIKM 2025, Seoul, Republic of Korea, November 10-14, 2025
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PUB: An LLM-Enhanced Personality-Driven User Behaviour Simulator for Recommender System Evaluation.
Chenglong Ma|Ziqi Xu|Yongli Ren|Danula Hettiachchi|Jeffrey Chan
Proceedings of the 48th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2025, Padua, Italy, July 13-18, 2025
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Off-policy Evaluation for Multiple Actions in the Presence of Unobserved Confounders.
Haolin Wang|Lin Liu|Jiuyong Li|Ziqi Xu|Jixue Liu|Zehong Cao|Debo Cheng
Proceedings of the ACM on Web Conference 2025, WWW 2025, Sydney, NSW, Australia, 28 April 2025- 2 May 2025
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Fairness Evaluation with Item Response Theory.
Ziqi Xu|Sevvandi Kandanaarachchi|Cheng Soon Ong|Eirini Ntoutsi
Proceedings of the ACM on Web Conference 2025, WWW 2025, Sydney, NSW, Australia, 28 April 2025- 2 May 2025
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Towards Better Evaluation of Recommendation Algorithms with Bi-directional Item Response Theory.
Ziqi Xu|Chenglong Ma|Yongli Ren|Jeffrey Chan|Wei Shao|Feng Xia
Companion Proceedings of the ACM on Web Conference 2025, WWW 2025, Sydney, NSW, Australia, 28 April 2025 - 2 May 2025