Hengyi Cai

2026

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Learning Discrete Identifiers and Dense Vectors for Generative Retrieval.
Yunfan Xie|Lixin Zou|Xiangyang Luo|Hengyi Cai|Chaoran Zhang|Liming Dong|Xixun Lin|Chenliang Li
ACM Transactions on Information Systems (TOIS) 2026 Volume 44 Issue 2
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Erratum: Learning Discrete Identifiers and Dense Vectors for Generative Retrieval.
Yunfan Xie|Lixin Zou|Xiangyang Luo|Hengyi Cai|Chaoran Zhang|Liming Dong|Xixun Lin|Chenliang Li
ACM Transactions on Information Systems (TOIS) 2026 Volume 44 Issue 3
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Probe-and-Fetch: Dynamic KV Cache Pruning for Accelerated Long-Context Inference in Web-Scale AI Search.
Yuchen Li|Rui Kong|Xinran Chen|Chengzhe Zhang|Jiamin Chen|Cheng Deng|Xinyu Ma|Haojie Zhang|Tianhao Peng|Hengyi Cai|Shuaiqiang Wang|Jiashu Zhao|Yongqi Zhang|Haoyi Xiong|Jimmy Xiangji Huang|Lei Chen|Jun Wang|Dawei Yin
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.

2024

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Explainability for Large Language Models: A Survey.
Haiyan Zhao|Hanjie Chen|Fan Yang|Ninghao Liu|Huiqi Deng|Hengyi Cai|Shuaiqiang Wang|Dawei Yin|Mengnan Du
ACM Transactions on Intelligent Systems and Technology (TIST) 2024 Volume 15 Issue 2
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Towards Completeness-Oriented Tool Retrieval for Large Language Models.
Changle Qu|Sunhao Dai|Xiaochi Wei|Hengyi Cai|Shuaiqiang Wang|Dawei Yin|Jun Xu|Ji-Rong Wen
Proceedings of the 33rd ACM International Conference on Information and Knowledge Management, CIKM 2024, Boise, ID, USA, October 21-25, 2024
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Text-Video Retrieval via Multi-Modal Hypergraph Networks.
Qian Li|Lixin Su|Jiashu Zhao|Long Xia|Hengyi Cai|Suqi Cheng|Hengzhu Tang|Junfeng Wang|Dawei Yin
Proceedings of the 17th ACM International Conference on Web Search and Data Mining, WSDM 2024, Merida, Mexico, March 4-8, 2024

2023

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Pre-trained Language Model-based Retrieval and Ranking for Web Search.
Lixin Zou|Weixue Lu|Yiding Liu|Hengyi Cai|Xiaokai Chu|Dehong Ma|Daiting Shi|Yu Sun|Zhicong Cheng|Simiu Gu|Shuaiqiang Wang|Dawei Yin
ACM Transactions on the Web 2023 Volume 17 Issue 1

2022

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Approximated Doubly Robust Search Relevance Estimation.
Lixin Zou|Changying Hao|Hengyi Cai|Shuaiqiang Wang|Suqi Cheng|Zhicong Cheng|Wenwen Ye|Simiu Gu|Dawei Yin
Proceedings of the 31st ACM International Conference on Information & Knowledge Management, Atlanta, GA, USA, October 17-21, 2022
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Fast Semantic Matching via Flexible Contextualized Interaction.
Wenwen Ye|Yiding Liu|Lixin Zou|Hengyi Cai|Suqi Cheng|Shuaiqiang Wang|Dawei Yin
WSDM '22: The Fifteenth ACM International Conference on Web Search and Data Mining, Virtual Event / Tempe, AZ, USA, February 21 - 25, 2022