🧷 About-me

I am currently a 4th year Ph.D. student at the Gaoling School of Artificial Intelligence, Renmin University of China. My supervisor is Prof. Zhicheng Dou, and I am expected to graduate in 2027.
I earned my bachelor’s degree (2018-2022) at Shandong University.
Research interests: AI Search, LLM for Ranking, Deep Search, Conversational Search

🔥 News

2025.8: Our paper “CoRanking: Collaborative Ranking with Small and Large Ranking Agents” has been accepted by EMNLP 2025 (Findings)! See more details.
2025.8: We release ReasonRank, a strong reasoning-intensive passage reranker. It has achieved state-of-the-art performance on many IR benchmarks! See more details.
2025.7: Our paper “Large Language Models for Information Retrieval: A Survey” has been accepted by TOIS 2025! See more details.
2025.6: Our paper “Sliding Windows Are Not the End: Exploring Full Ranking with Long-Context Large Language Models” has been accepted by ACL 2025 (Oral)! Looking forward to seeing you in Vienna! See more details.

arXiv Preprint

ReasonRank: Empowering Passage Ranking with Strong Reasoning Ability
Wenhan Liu, Xinyu Ma, Weiwei Sun, Yutao Zhu, Yuchen Li, Dawei Yin, Zhicheng Dou*
Our ReasonRank had achieved SOTA performance 40.8 on BRIGHT leaderboard (Aug 9, 2025)!

ACL 2025 (Main)

TOIS 2025

Large Language Models for Information Retrieval: A Survey
Yutao Zhu, Huaying Yuan, Shuting Wang, Jiongnan Liu, Wenhan Liu, Chenlong Deng, Haonan Chen, Zheng Liu, Zhicheng Dou, Ji-Rong Wen

EMNLP 2025 (Findings) CoRanking: Collaborative Ranking with Small and Large Ranking Agents, Wenhan Liu, Xinyu Ma, Yutao Zhu, Lixin Su, Shuaiqiang Wang, Dawei Yin, Zhicheng Dou*.
arXiv Demorank: Selecting effective demonstrations for large language models in ranking task, Wenhan Liu, Yutao Zhu, Zhicheng Dou*.
WWW 2024 Mining exploratory queries for conversational search, Wenhan Liu, Ziliang Zhao, Yutao Zhu, Zhicheng Dou*.
KAIS 2024 How to personalize and whether to personalize? Candidate documents decide, Wenhan Liu, Yujia Zhou, Yutao Zhu, Zhicheng Dou*.
IEEE Transactions on Big Data 2022 Defending Batch-Level Label Inference and Replacement Attacks in Vertical Federated Learning, Tianyuan Zou, Yang Liu, Yan Kang, Wenhan Liu, Yuanqin He, Zhihao Yi, Qiang Yang, Ya-Qin Zhang.

2022.09 - Present, Ph.D. student, Gaoling School of Artificial Intelligence, Renmin University of China.
2018.09 - 2022.06, Bachelor, Shandong University, majoring in Computer Science and Technology (GPA Ranking: 1/50).

2024.07 - now, Baidu (mentored by Xinyu Ma).
2021.03 - 2021.10, Institute for AI Industry Research (AIR), Tsinghua University (mentored by Zaiqing Nie and Yang Liu).