Chenyi Lei

2026

UniDGF: A Unified Detection-to-Generation Framework for Hierarchical Object Visual Recognition.

Xinyu Nan|Lingtao Mao|Huangyu Dai|Zexin Zheng|Xinyu Sun|Zihan Liang|Ben Chen|Chenyi Lei

Proceedings of the 2026 International Conference on Multimedia Retrieval, ICMR 2026, Amsterdam, The Netherlands, June 16-19, 2026

GRADE: Personalized Multi-Task Fusion via Group-Relative Reinforcement Learning with Adaptive Dirichlet Exploration.

Tingfeng Hong|Pingye Ren|Xinlong Xiao|Chao Wang|Chenyi Lei|Wenwu Ou|Han 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.

Towards Context-aware Reasoning-enhanced Generative Searching in E-commerce.

Zhiding Liu|Ben Chen|Mingyue Cheng|Enhong Chen|Li Li|Chenyi Lei|Wenwu Ou|Han Li|Kun Gai

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.

DiffusionGS: Generative Search with Query Conditioned Diffusion in Kuaishou.

Qinyao Li|Xiaoyang Zheng|Qihang Zhao|Ke Xu|Zhongbo Sun|Chao Wang|Chenyi Lei|Han Li|Wenwu Ou

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.

COINS: Semantic Ids Enhanced Cold Item Representation for Click-through Rate Prediction in E-commerce Search.

Qihang Zhao|Zhongbo Sun|Xiaoyang Zheng|Xian Guo|Siyuan Wang|Zihan Liang|Mingcan Peng|Ben Chen|Chenyi Lei

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

Multi-Source Knowledge Pruning for Retrieval-Augmented Generation: A Benchmark and Empirical Study.

Shuo Yu|Mingyue Cheng|Qi Liu|Daoyu Wang|Jiqian Yang|Jie Ouyang|Yucong Luo|Chenyi Lei|Enhong Chen

Proceedings of the 34th ACM International Conference on Information and Knowledge Management, CIKM 2025, Seoul, Republic of Korea, November 10-14, 2025

H-PRM: A Pluggable Hotword Pre-Retrieval Module for Various Speech Recognition Systems.

Huangyu Dai|Lingtao Mao|Ben Chen|Zihan Wang|Zihan Liang|Ying Han|Chenyi Lei|Han Li

Proceedings of the 34th ACM International Conference on Information and Knowledge Management, CIKM 2025, Seoul, Republic of Korea, November 10-14, 2025

UniECS: Unified Multimodal E-Commerce Search Framework with Gated Cross-modal Fusion.

Zihan Liang|Yufei Ma|Zhipeng Qian|Huangyu Dai|Zihan Wang|Ben Chen|Chenyi Lei|Yuqing Ding|Han Li

Proceedings of the 34th ACM International Conference on Information and Knowledge Management, CIKM 2025, Seoul, Republic of Korea, November 10-14, 2025

2022

Scenario-Adaptive and Self-Supervised Model for Multi-Scenario Personalized Recommendation.

Yuanliang Zhang|Xiaofeng Wang|Jinxin Hu|Ke Gao|Chenyi Lei|Fei Fang

Proceedings of the 31st ACM International Conference on Information & Knowledge Management, Atlanta, GA, USA, October 17-21, 2022

2019

TiSSA: A Time Slice Self-Attention Approach for Modeling Sequential User Behaviors.

Chenyi Lei|Shouling Ji|Zhao Li

The World Wide Web Conference, WWW 2019, San Francisco, CA, USA, May 13-17, 2019