Zechun Niu

According to our database, Zechun Niu authored at least 9 papers between 2022 and 2026.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of four.

2026

UnityMAS-O: A General RL Optimization Framework for LLM-Based Multi-Agent Systems.

Yiqun Chen, Wei Yang, Erhan Zhang, Shijie Wang, Qi Liu, Zechun Niu, Bin Zhang, Haitao Li, Rui Li, Lingyong Yan, Jinyuan Feng, Biqing Qi, Xiaochi Wei, Yan Gao, Yi Wu, Yao Hu, Jiaxin Mao

CoRR, May, 2026

PRAISE: Prefix-Based Rollout Reuse in Agentic Search Training.

Erhan Zhang, Yiqun Chen, Zechun Niu, Wei Yang, Xiaochi Wei, Yan Gao, Yi Wu, Yao Hu, Jiaxin Mao

CoRR, April, 2026

2025

Investigating the Robustness of Counterfactual Learning to Rank Models: A Reproducibility Study.

Zechun Niu, Zhilin Zhang, Jiaxin Mao, Qingyao Ai, Ji-Rong Wen

Proceedings of the 48th International ACM SIGIR Conference on Research and Development in Information Retrieval, 2025

Distributionally Robust Optimization for Unbiased Learning to Rank.

Zechun Niu, Lang Mei, Chong Chen, Jiaxin Mao

Proceedings of the 48th International ACM SIGIR Conference on Research and Development in Information Retrieval, 2025

Addressing Personalized Bias for Unbiased Learning to Rank.

Zechun Niu, Lang Mei, Liu Yang, Ziyuan Zhao, Qiang Yan, Jiaxin Mao, Ji-Rong Wen

Proceedings of the 34th ACM International Conference on Information and Knowledge Management, 2025

2024

Investigating the Robustness of Counterfactual Learning to Rank Models: A Reproducibility Study.

Zechun Niu, Jiaxin Mao, Qingyao Ai, Ji-Rong Wen

CoRR, 2024

2023

Overview of the NTCIR-17 Unbiased Learning to Rank Evaluation 2 (ULTRE-2) Task.

Zechun Niu, Jiaxin Mao, Qingyao Ai, Lixin Zou, Shuaiqiang Wang, Dawei Yin

Proceedings of the 17th NTCIR Conference on Evaluation of Information Access Technologies, 2023

2022

Overview of the NTCIR-16 Unbiased Learning to Rank Evaluation (ULTRE) Task.

Yurou Zhao, Zechun Niu, Feng Wang, Jiaxin Mao, Qingyao Ai, Tao Yang, Junqi Zhang, Yiqun Liu

Proceedings of the 16th NTCIR Conference on Evaluation of Information Access Technologies, 2022

RUCIR21 at the NTCIR-16 ULTRE Task.

Zechun Niu, Yurou Zhao, Feng Wang, Jiaxin Mao

Proceedings of the 16th NTCIR Conference on Evaluation of Information Access Technologies, 2022