Keping Bi

2026

doi dblp
How Do LLM-Generated Texts Impact Term-Based Retrieval Models?
Wei Huang|Keping Bi|Yinqiong Cai|Wei Chen|Jiafeng Guo|Xueqi Cheng
Proceedings of the Nineteenth ACM International Conference on Web Search and Data Mining, WSDM 2026, Boise, ID, USA, February 22-26, 2026

2025

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CAME: Competitively Learning a Mixture-of-Experts Model for First-stage Retrieval.
Jiafeng Guo|Yinqiong Cai|Keping Bi|Yixing Fan|Wei Chen|Ruqing Zhang|Xueqi Cheng
ACM Transactions on Information Systems (TOIS) 2025 Volume 43 Issue 2
doi dblp
A Comparative Study of Specialized LLMs as Dense Retrievers.
Hengran Zhang|Keping Bi|Jiafeng Guo
Information Retrieval - 31st China Conference, CCIR 2025, Shihezi, China, August 15-17, 2025, Revised Selected Papers
doi dblp
Bridging Queries and Tables through Entities in Open-Domain Table Retrieval.
Da Li|Keping Bi|Jiafeng Guo|Xueqi Cheng
Proceedings of the 34th ACM International Conference on Information and Knowledge Management, CIKM 2025, Seoul, Republic of Korea, November 10-14, 2025
doi dblp
LifeIR at the NTCIR-18 Lifelog-6 Task.
Jiahan Chen|Da Li|Keping Bi
Proceedings of the 18th NTCIR Conference on Evaluation of Information Access Technologies, NTCIR 2025, Tokyo, Japan, June 10-13, 2025
doi dblp
Unbiased Learning to Rank with Query-Level Click Propensity Estimation: Beyond Pointwise Observation and Relevance.
Lulu Yu|Keping Bi|Jiafeng Guo|Shihao Liu|Dawei Yin|Xueqi Cheng
Companion Proceedings of the ACM on Web Conference 2025, WWW 2025, Sydney, NSW, Australia, 28 April 2025 - 2 May 2025

2024

doi dblp
Are Large Language Models More Honest in Their Probabilistic or Verbalized Confidence?
Shiyu Ni|Keping Bi|Lulu Yu|Jiafeng Guo
Information Retrieval - 30th China Conference, CCIR 2024, Wuhan, China, October 18-20, 2024, Revised Selected Papers
doi dblp
Reproducibility Analysis and Enhancements for Multi-aspect Dense Retriever with Aspect Learning.
Keping Bi|Henning Müller|Jiafeng Guo|Oscar Alfonso Jiménez del Toro|Xiaojie Sun|Xueqi Cheng|Henning Müller|Jiafeng Guo|Oscar Alfonso Jiménez del Toro|Xueqi Cheng
Advances in Information Retrieval - 46th European Conference on Information Retrieval, ECIR 2024, Glasgow, UK, March 24-28, 2024, Proceedings, Part IV
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A Multi-Granularity-Aware Aspect Learning Model for Multi-Aspect Dense Retrieval.
Xiaojie Sun|Keping Bi|Jiafeng Guo|Sihui Yang|Qishen Zhang|Zhongyi Liu|Guannan Zhang|Xueqi Cheng
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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L2R: Lifelong Learning for First-stage Retrieval with Backward-Compatible Representations.
Yinqiong Cai|Keping Bi|Yixing Fan|Jiafeng Guo|Wei Chen|Xueqi Cheng
Proceedings of the 32nd ACM International Conference on Information and Knowledge Management, CIKM 2023, Birmingham, United Kingdom, October 21-25, 2023
doi dblp
Pre-training with Aspect-Content Text Mutual Prediction for Multi-Aspect Dense Retrieval.
Xiaojie Sun|Keping Bi|Jiafeng Guo|Xinyu Ma|Yixing Fan|Hongyu Shan|Qishen Zhang|Zhongyi Liu
Proceedings of the 32nd ACM International Conference on Information and Knowledge Management, CIKM 2023, Birmingham, United Kingdom, October 21-25, 2023
doi dblp
CIR at the NTCIR-17 ULTRE-2 Task.
Lulu Yu|Keping Bi|Jiafeng Guo|Xueqi Cheng
Proceedings of the 17th NTCIR Conference on Evaluation of Information Access Technologies, NTCIR 2023, Tokyo, Japan, December 12-15, 2023

2021

doi dblp
Asking Clarifying Questions Based on Negative Feedback in Conversational Search.
Keping Bi|Qingyao Ai|W. Bruce Croft
ICTIR '21: The 2021 ACM SIGIR International Conference on the Theory of Information Retrieval, Virtual Event, Canada, July 11, 2021
doi dblp
Learning a Fine-Grained Review-based Transformer Model for Personalized Product Search.
Keping Bi|Qingyao Ai|W. Bruce Croft
SIGIR '21: The 44th International ACM SIGIR Conference on Research and Development in Information Retrieval, Virtual Event, Canada, July 11-15, 2021
doi dblp
Leveraging User Behavior History for Personalized Email Search.
Keping Bi|Pavel Metrikov|Chunyuan Li|Byungki Byun
WWW '21: The Web Conference 2021, Virtual Event / Ljubljana, Slovenia, April 19-23, 2021.

2020

doi dblp
Explainable Product Search with a Dynamic Relation Embedding Model.
Qingyao Ai|Yongfeng Zhang|Keping Bi|W. Bruce Croft
ACM Transactions on Information Systems (TOIS) 2020 Volume 38 Issue 1
doi dblp
A Transformer-based Embedding Model for Personalized Product Search.
Keping Bi|Qingyao Ai|W. Bruce Croft
Proceedings of the 43rd International ACM SIGIR conference on research and development in Information Retrieval, SIGIR 2020, Virtual Event, China, July 25-30, 2020

2019

doi dblp
Conversational Product Search Based on Negative Feedback.
Keping Bi|Qingyao Ai|Yongfeng Zhang|W. Bruce Croft
Proceedings of the 28th ACM International Conference on Information and Knowledge Management, CIKM 2019, Beijing, China, November 3-7, 2019.
doi dblp
A Study of Context Dependencies in Multi-page Product Search.
Keping Bi|Choon Hui Teo|Jaap Kamps|Vijai Mohan|Yesh Dattatreya|Jaap Kamps|Vijai Mohan|W. Bruce Croft
Proceedings of the 28th ACM International Conference on Information and Knowledge Management, CIKM 2019, Beijing, China, November 3-7, 2019.
doi dblp
Iterative Relevance Feedback for Answer Passage Retrieval with Passage-Level Semantic Match.
Keping Bi|Qingyao Ai|W. Bruce Croft
Advances in Information Retrieval - 41st European Conference on IR Research, ECIR 2019, Cologne, Germany, April 14-18, 2019, Proceedings, Part I

2018

doi dblp
Learning a Deep Listwise Context Model for Ranking Refinement.
Qingyao Ai|Keping Bi|Jiafeng Guo|W. Bruce Croft
The 41st International ACM SIGIR Conference on Research & Development in Information Retrieval, SIGIR 2018, Ann Arbor, MI, USA, July 08-12, 2018
doi dblp
Unbiased Learning to Rank with Unbiased Propensity Estimation.
Qingyao Ai|W. Bruce Croft|Luo Si|Keping Bi|Cheng Luo|Jiafeng Guo|Luo Si|W. Bruce Croft
The 41st International ACM SIGIR Conference on Research & Development in Information Retrieval, SIGIR 2018, Ann Arbor, MI, USA, July 08-12, 2018

2017

doi dblp
Learning a Hierarchical Embedding Model for Personalized Product Search.
Qingyao Ai|Yongfeng Zhang|Keping Bi|Xu Chen|W. Bruce Croft
Proceedings of the 40th International ACM SIGIR Conference on Research and Development in Information Retrieval, Shinjuku, Tokyo, Japan, August 7-11, 2017

2012

doi dblp
Extracting search-focused key n-grams for relevance ranking in web search.
Chen Wang|Keping Bi|Yunhua Hu|Hang Li|Guihong Cao
Proceedings of the Fifth International Conference on Web Search and Web Data Mining, WSDM 2012, Seattle, WA, USA, February 8-12, 2012