Chaochao Chen

2026

doi dblp
SimCDR: Preserving Intra-Domain Similarities of Users for Cross-Domain Recommendation.
Kai Zhang|Zhihong Pan|Sanshi Lei Yu|Qi Liu|Hongke Zhao|Chaochao Chen|Enhong Chen
ACM Transactions on Information Systems (TOIS) 2026 Volume 44 Issue 2
doi dblp
STG-DGR: Fraud Detection on Streaming Transaction Graphs with Diffusion-based Generative Replay.
Rui Ou|Kun Zhu|Nana Zhang|Jiangtong Li|Chaochao Chen|Changjun Jiang
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.
doi dblp
Sharpness-Aware Minimization for Generalized Embedding Learning in Federated Recommendation.
Fengyuan Yu|Xiaohua Feng|Yuyuan Li|Changwang Zhang|Jun Wang|Chaochao 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.
doi dblp
Taming the Long Tail: Efficient Item-wise Sharpness-Aware Minimization for LLM-based Recommender Systems.
Jiaming Zhang|Yuyuan Li|Xiaohua Feng|Li Zhang|Longfei Li|Jun Zhou|Chaochao 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.
doi dblp
LLM-enhanced Federated Graph Learning with Geometry-aware Graph Projection and Shared Subspace Aggregation.
Pengyang Zhou|Zhihao Huang|Jiahe Xu|Wu Wen|Xiaolin Zheng|Chaochao Chen|Jianwei 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.

2025

doi dblp
Post-Training Attribute Unlearning in Recommender Systems.
Chaochao Chen|Yizhao Zhang|Yuyuan Li|Jun Wang|Lianyong Qi|Xiaolong Xu|Xiaolin Zheng|Jianwei Yin
ACM Transactions on Information Systems (TOIS) 2025 Volume 43 Issue 1
doi dblp
Unified Heterogeneous Hypergraph Construction for Incomplete Multimedia Recommendation.
Zhenghong Lin|Yanchao Tan|Jiamin Chen|Hengyu Zhang|Chaochao Chen|Shiping Wang|Carl Yang
ACM Transactions on Information Systems (TOIS) 2025 Volume 43 Issue 5
doi dblp
DuAda: Adaptive Targeted Model Poisoning Attack Framework via Dummy User Simulation on Federated Recommendation.
Jiajie Su|Chaochao Chen|Yihao Wang|Weiming Liu|Yuyuan Li|Tao Wang|Zhigang Li|Xiaolin Zheng|Jianwei Yin
ACM Transactions on Information Systems (TOIS) 2025 Volume 43 Issue 6
doi dblp
Personalized Federated Recommendation with Multi-Faceted User Representation and Global Consistent Prototype.
Jiaming Qian|Xinting Liao|Xiangmou Qu|Zhihui Fu|Xingyu Lou|Changwang Zhang|Pengyang Zhou|Zijun Zhou|Jun Wang|Chaochao Chen
Proceedings of the 34th ACM International Conference on Information and Knowledge Management, CIKM 2025, Seoul, Republic of Korea, November 10-14, 2025
doi dblp
Training-free Periodic Interest Augmentation in Incremental Recommendation.
Heyuan Huang|Xingyu Lou|Changwang Zhang|Chaochao Chen|Kuiyao Dong|Feng Lu|Han Lei|Yihao Wang|Wangchunshu Zhou|Jun Wang
Proceedings of the 48th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2025, Padua, Italy, July 13-18, 2025
doi dblp
Joint Item Embedding Dual-view Exploration and Adaptive Local-Global Fusion for Federated Recommendation.
Pengyang Zhou|Chaochao Chen|Weiming Liu|Wenkai Shen|Xinting Liao|Huarong Deng|Zhihui Fu|Jun Wang|Wu Wen|Xiaolin Zheng
Proceedings of the 48th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2025, Padua, Italy, July 13-18, 2025
doi dblp
FedGF: Enhancing Structural Knowledge via Graph Factorization for Federated Graph Learning.
Pengyang Zhou|Chaochao Chen|Weiming Liu|Xinting Liao|Fengyuan Yu|Zhihui Fu|Xingyu Lou|Wu Wen|Xiaolin Zheng|Jun Wang
Proceedings of the Eighteenth ACM International Conference on Web Search and Data Mining, WSDM 2025, Hannover, Germany, March 10-14, 2025
doi dblp
Joint Similarity Item Exploration and Overlapped User Guidance for Multi-Modal Cross-Domain Recommendation.
Weiming Liu|Chaochao Chen|Jiahe Xu|Xinting Liao|Fan Wang|Xiaolin Zheng|Zhihui Fu|Ruiguang Pei|Jun Wang
Proceedings of the ACM on Web Conference 2025, WWW 2025, Sydney, NSW, Australia, 28 April 2025- 2 May 2025
doi dblp
Plug and Play: Enabling Pluggable Attribute Unlearning in Recommender Systems.
Xiaohua Feng|Yuyuan Li|Fengyuan Yu|Li Zhang|Chaochao Chen|Xiaolin Zheng
Proceedings of the ACM on Web Conference 2025, WWW 2025, Sydney, NSW, Australia, 28 April 2025- 2 May 2025

2024

doi dblp
Heterogeneous Information Crossing on Graphs for Session-Based Recommender Systems.
Xiaolin Zheng|Rui Wu|Zhongxuan Han|Chaochao Chen|Linxun Chen|Bing Han
ACM Transactions on the Web 2024 Volume 18 Issue 2
doi dblp
DIIT: A Domain-Invariant Information Transfer Method for Industrial Cross-Domain Recommendation.
Hany Azzam|Chaochao Chen|Heyuan Huang|Pengxiang Cheng|Thomas Roelleke|Xingyu Lou|Hany Azzam|Chaochao Chen|Pengxiang Cheng|Thomas Roelleke|Yue Xin|Chengwei He|Xiang Liu|Jun Wang
Proceedings of the 33rd ACM International Conference on Information and Knowledge Management, CIKM 2024, Boise, ID, USA, October 21-25, 2024
doi dblp
Hypergraph Convolutional Network for User-Oriented Fairness in Recommender Systems.
Zhongxuan Han|Chaochao Chen|Xiaolin Zheng|Li Zhang|Yuyuan Li
Proceedings of the 47th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2024, Washington DC, USA, July 14-18, 2024
doi dblp
Revisit Targeted Model Poisoning on Federated Recommendation: Optimize via Multi-objective Transport.
Jiajie Su|Chaochao Chen|Weiming Liu|Zibin Lin|Shuheng Shen|Weiqiang Wang|Xiaolin Zheng
Proceedings of the 47th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2024, Washington DC, USA, July 14-18, 2024
doi dblp
User Distribution Mapping Modelling with Collaborative Filtering for Cross Domain Recommendation.
Weiming Liu|Chaochao Chen|Xinting Liao|Mengling Hu|Jiajie Su|Yanchao Tan|Fan Wang
Proceedings of the ACM on Web Conference 2024, WWW 2024, Singapore, May 13-17, 2024

2023

doi dblp
FedPSE: Personalized Sparsification with Element-wise Aggregation for Federated Learning.
Longfei Zheng|Yingting Liu|Xiaolong Xu|Chaochao Chen|Yuzhou Tang|Lei Wang|Xiaolong Hu
Proceedings of the 32nd ACM International Conference on Information and Knowledge Management, CIKM 2023, Birmingham, United Kingdom, October 21-25, 2023
doi dblp
Decentralized Graph Neural Network for Privacy-Preserving Recommendation.
Xiaolin Zheng|Zhongyu Wang|Chaochao Chen|Jiashu Qian|Yao Yang
Proceedings of the 32nd ACM International Conference on Information and Knowledge Management, CIKM 2023, Birmingham, United Kingdom, October 21-25, 2023
doi dblp
Intra and Inter Domain HyperGraph Convolutional Network for Cross-Domain Recommendation.
Zhongxuan Han|Xiaolin Zheng|Chaochao Chen|Wenjie Cheng|Yang Yao
Proceedings of the ACM Web Conference 2023, WWW 2023, Austin, TX, USA, 30 April 2023 - 4 May 2023
doi dblp
Joint Internal Multi-Interest Exploration and External Domain Alignment for Cross Domain Sequential Recommendation.
Weiming Liu|Xiaolin Zheng|Chaochao Chen|Jiajie Su|Xinting Liao|Mengling Hu|Yanchao Tan
Proceedings of the ACM Web Conference 2023, WWW 2023, Austin, TX, USA, 30 April 2023 - 4 May 2023
doi dblp
Enhancing Hierarchy-Aware Graph Networks with Deep Dual Clustering for Session-based Recommendation.
Jiajie Su|Chaochao Chen|Weiming Liu|Fei Wu|Xiaolin Zheng|Haoming Lyu
Proceedings of the ACM Web Conference 2023, WWW 2023, Austin, TX, USA, 30 April 2023 - 4 May 2023
doi dblp
INCREASE: Inductive Graph Representation Learning for Spatio-Temporal Kriging.
Chuanpan Zheng|Xiaoliang Fan|Cheng Wang|Jianzhong Qi|Chaochao Chen|Longbiao Chen
Proceedings of the ACM Web Conference 2023, WWW 2023, Austin, TX, USA, 30 April 2023 - 4 May 2023

2022

doi dblp
Toward Scalable and Privacy-preserving Deep Neural Network via Algorithmic-Cryptographic Co-design.
Jun Zhou|Longfei Zheng|Chaochao Chen|Yan Wang|Xiaolin Zheng|Bingzhe Wu|Cen Chen|Li Wang|Jianwei Yin
ACM Transactions on Intelligent Systems and Technology (TIST) 2022 Volume 13 Issue 4
doi dblp
Cross-Network Social User Embedding with Hybrid Differential Privacy Guarantees.
Jiaqian Ren|Lei Jiang|Hao Peng|Lingjuan Lyu|Zhiwei Liu|Chaochao Chen|Jia Wu|Xu Bai|Philip S. Yu
Proceedings of the 31st ACM International Conference on Information & Knowledge Management, Atlanta, GA, USA, October 17-21, 2022
doi dblp
Exploiting Variational Domain-Invariant User Embedding for Partially Overlapped Cross Domain Recommendation.
Weiming Liu|Xiaolin Zheng|Jiajie Su|Mengling Hu|Yanchao Tan|Chaochao Chen
SIGIR '22: The 45th International ACM SIGIR Conference on Research and Development in Information Retrieval, Madrid, Spain, July 11 - 15, 2022
doi dblp
MetaCare++: Meta-Learning with Hierarchical Subtyping for Cold-Start Diagnosis Prediction in Healthcare Data.
Yanchao Tan|Carl Yang|Xiangyu Wei|Chaochao Chen|Weiming Liu|Longfei Li|Jun Zhou|Xiaolin Zheng
SIGIR '22: The 45th International ACM SIGIR Conference on Research and Development in Information Retrieval, Madrid, Spain, July 11 - 15, 2022
doi dblp
Differential Private Knowledge Transfer for Privacy-Preserving Cross-Domain Recommendation.
Chaochao Chen|Huiwen Wu|Jiajie Su|Lingjuan Lyu|Xiaolin Zheng|Li Wang
WWW '22: The ACM Web Conference 2022, Virtual Event, Lyon, France, April 25 - 29, 2022
doi dblp
Collaborative Filtering with Attribution Alignment for Review-based Non-overlapped Cross Domain Recommendation.
Weiming Liu|Xiaolin Zheng|Mengling Hu|Chaochao Chen
WWW '22: The ACM Web Conference 2022, Virtual Event, Lyon, France, April 25 - 29, 2022

2021

doi dblp
Large-scale Secure XGB for Vertical Federated Learning.
Wenjing Fang|Derun Zhao|Jin Tan|Chaochao Chen|Chaofan Yu|Li Wang|Lei Wang|Jun Zhou|Benyu Zhang
CIKM '21: The 30th ACM International Conference on Information and Knowledge Management, Virtual Event, Queensland, Australia, November 1 - 5, 2021

2020

doi dblp
Practical Privacy Preserving POI Recommendation.
Chaochao Chen|Jun Zhou|Bingzhe Wu|Wenjing Fang|Li Wang|Yuan Qi|Xiaolin Zheng
ACM Transactions on Intelligent Systems and Technology (TIST) 2020 Volume 11 Issue 5
doi dblp
Nebula: A Scalable Privacy-Preserving Machine Learning System in Ant Financial.
Cen Chen|Bingzhe Wu|Li Wang|Chaochao Chen|Jin Tan|Lei Wang|Jun Zhou|Benyu Zhang
CIKM '20: The 29th ACM International Conference on Information and Knowledge Management, Virtual Event, Ireland, October 19-23, 2020

2019

doi dblp
Distributed Deep Forest and its Application to Automatic Detection of Cash-Out Fraud.
Ya-Lin Zhang|Jun Zhou|Wenhao Zheng|Ji Feng|Longfei Li|Ziqi Liu|Ming Li|Zhiqiang Zhang|Chaochao Chen|Xiaolong Li|Yuan (Alan) Qi|Zhi-Hua Zhou
ACM Transactions on Intelligent Systems and Technology (TIST) 2019 Volume 10 Issue 5
doi dblp
DTCDR: A Framework for Dual-Target Cross-Domain Recommendation.
Feng Zhu|Chaochao Chen|Yan Wang|Guanfeng Liu|Xiaolin Zheng
Proceedings of the 28th ACM International Conference on Information and Knowledge Management, CIKM 2019, Beijing, China, November 3-7, 2019.

2018

doi dblp
Heterogeneous Graph Neural Networks for Malicious Account Detection.
Ziqi Liu|Chaochao Chen|Xinxing Yang|Jun Zhou|Xiaolong Li|Le Song
Proceedings of the 27th ACM International Conference on Information and Knowledge Management, CIKM 2018, Torino, Italy, October 22-26, 2018