Yankai Chen

2026

Generative Archetype-Grounded Item Representations for Sequential Recommendation.

Yifan Li|Jiahong Liu|Xinni Zhang|Hao Chen|Yankai Chen|Wenhao Yu|Jianting Chen|Irwin King

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.

DP-DGAD: A Generalist Dynamic Graph Anomaly Detector with Dynamic Prototypes.

Jialun Zheng|Jie Liu|Jiannong Cao|Xiao Wang|Hanchen Yang|Yankai Chen

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

Learning Binarized Representations with Pseudo-positive Sample Enhancement for Efficient Graph Collaborative Filtering.

Yankai Chen|Yue Que|Xinni Zhang|Chen Ma|Irwin King

ACM Transactions on Information Systems (TOIS) 2025 Volume 43 Issue 5

UTCS: Effective Unsupervised Temporal Community Search with Pre-training of Temporal Dynamics and Subgraph Knowledge.

Yue Zhang|Yankai Chen|Yingli Zhou|Yucan Guo|Xiaolin Han|Chenhao Ma

Proceedings of the 48th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2025, Padua, Italy, July 13-18, 2025

Semi-supervised Node Importance Estimation with Informative Distribution Modeling for Uncertainty Regularization.

Yankai Chen|Taotao Wang|Yixiang Fang|Yunyu Xiao

Proceedings of the ACM on Web Conference 2025, WWW 2025, Sydney, NSW, Australia, 28 April 2025- 2 May 2025

TRACE: Intra-visit Clinical Event Nowcasting via Effective Patient Trajectory Encoding.

Yuyang Liang|Yankai Chen|Yixiang Fang|Laks V. S. Lakshmanan|Chenhao Ma

Companion Proceedings of the ACM on Web Conference 2025, WWW 2025, Sydney, NSW, Australia, 28 April 2025 - 2 May 2025

CSPO: Cross-Market Synergistic Stock Price Movement Forecasting with Pseudo-volatility Optimization.

Sida Lin|Yankai Chen|Yiyan Qi|Chenhao Ma|Bokai Cao|Yifei Zhang|Xue Liu|Jian Guo

Companion Proceedings of the ACM on Web Conference 2025, WWW 2025, Sydney, NSW, Australia, 28 April 2025 - 2 May 2025

2024

Effective Job-market Mobility Prediction with Attentive Heterogeneous Knowledge Learning and Synergy.

Sida Lin|Zhouyi Zhang|Yankai Chen|Chenhao Ma|Yixiang Fang|Shan Dai|Guangli Lu

Proceedings of the 33rd ACM International Conference on Information and Knowledge Management, CIKM 2024, Boise, ID, USA, October 21-25, 2024

EASE: Learning Lightweight Semantic Feature Adapters from Large Language Models for CTR Prediction.

Zexuan Qiu|Jieming Zhu|Yankai Chen|Guohao Cai|Weiwen Liu|Zhenhua Dong|Irwin King

Proceedings of the 33rd ACM International Conference on Information and Knowledge Management, CIKM 2024, Boise, ID, USA, October 21-25, 2024

2023

WSFE: Wasserstein Sub-graph Feature Encoder for Effective User Segmentation in Collaborative Filtering.

Yankai Chen|Yifei Zhang|Menglin Yang|Zixing Song|Chen Ma|Irwin King

Proceedings of the 46th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2023, Taipei, Taiwan, July 23-27, 2023

Bipartite Graph Convolutional Hashing for Effective and Efficient Top-N Search in Hamming Space.

Yankai Chen|Yixiang Fang|Yifei Zhang|Irwin King

Proceedings of the ACM Web Conference 2023, WWW 2023, Austin, TX, USA, 30 April 2023 - 4 May 2023

2022

Modeling Scale-free Graphs with Hyperbolic Geometry for Knowledge-aware Recommendation.

Yankai Chen|Menglin Yang|Yingxue Zhang|Mengchen Zhao|Ziqiao Meng|Jianye Hao|Irwin King

WSDM '22: The Fifteenth ACM International Conference on Web Search and Data Mining, Virtual Event / Tempe, AZ, USA, February 21 - 25, 2022