Publications by Topics

You can also find my recent publications on my Google Scholar profile.

Trustworthy AI

• Tongrui Su, Qingbin Li, Shengyu Zhu, Wei Chen, Xueqi Cheng, RaPA: Enhancing Transferable Targeted Attacks via Random Parameter Pruning, Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR), 2026.

• Shiqi Sun, Du Su, Wei Chen, Xueqi Cheng, Rethinking Implicit Hate Speech Detection: Focusing on Latent Hate Components via Dual-Process Augmentation, The ACM Web Conference (WWW), 2026.

• Shuangjie Fu, Du Su, Beining Huang, Fei Sun, Jingang Wang, Wei Chen, Huawei Shen, Xueqi Cheng, Jailbreak LLMs through Internal Stance Manipulation. 2025 Conference on Empirical Methods in Natural Language Processing. (EMNLP), 2025.

• Junjie Nan, Jianing Li, Wei Chen, Mingkun Zhang, Xueqi Cheng, NAPPure: Adaversarial Purification for Robust Image Classification under Non-Additive Perturbations. IEEE/CVF International Conference on Computer Vision (ICCV), 2025.

• Yuchen Wen, Keping Bi, Wei Chen, Jiafeng Guo, Xueqi Cheng, Evaluating Implicit Bias in Large Language Models by Attacking From a Psychometric Perspective. Findings of the Association for Computational Linguistics (ACL), 2025.

• Mingkun Zhang, Keping Bi, Wei Chen, Jiafeng Guo, Xueqi Cheng, CLIPure: Purification in Latent Space via CLIP for Adversarially Robust Zero-Shot Classification.The 13rd International Conference on Learning Representations(ICLR), 2025.

• Mingkun Zhang, Keping Bi, Wei Chen, Quanrun Chen, Jiafeng Guo, Xueqi Cheng, CausalDiff: Causality-Inspired Disentanglement via Difussion Model for Adversarial Defense. The 38th Annual Conference on Neural Information Processing systems(NeurIPS), 2024.

• Mingkun Zhang, Jianing Li, Wei Chen, Jiafeng Guo, Xueqi Cheng, Classifier Guidance Enhances Diffusion-based Purification by Preserviong Predictive Information. The 27th European Conference on Artifitial Intelligence(ECAI), 2024.

• Yu-An Liu, Ruqing Zhang, Mingkun Zhang, Jiafeng Guo, Maarten de Rijke, Wei Chen, Xueqi Cheng. Perturbation-Invariant Adversarial Training for Neural Ranking Models: Improving the Effectiveness-Robustness Trade-Off. The 38th International Association for the Advancement of Artificial Intelligence Conference (AAAI), 2024.

• Lu Chen, Ruqing Zhang, Wei Huang, Wei Chen, Jiafeng Guo, Xueqi Cheng, Inducing Causal Structure for Abstractive Text Summarization. The 32nd ACM International Conference on Information and Knowledge Management (CIKM), 2023.

• Yu-An Liu, Ruqing Zhang, Jiafeng Guo, Maarten de Rijke, Wei Chen, Yixing Fan, Xueqi Cheng, Black-box Adversarial attacks against Dense Retrieval Models: A Multi-view Contrastive Learning Method. The 32nd ACM International Conference on Information and Knowledge Management (CIKM), 2023.

• Yu-An Liu, Ruqing Zhang, Jiafeng Guo, Maarten de Rike, Wei Chen, Yixing Fan, Xueqi Cheng, Topic-oriented Adversarial Attacks against Black-box Neural Ranking Models. The 46th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR), 2023

• Chen Wu, Ruqing Zhang, Jiafeng Guo, Wei Chen, Yixing Fan, Maarten de Rike, Xueqi Cheng, Certified Robustness to Word Substitution Ranking Attack for Neural Ranking Models. The 31st ACM International Conference on Information and Knowledge Management (CIKM), 2022

• Da Yu, Huishuai Zhang, Wei Chen, Jian Yin, Tie-Yan Liu, What Makes Your Data Unavailable to Deep Learning? The 28th SIGKDD Conference on Knowledge Discovery and Data Mining (SIGKDD), 2022.

• Tianyu Pang, Huishuai Zhang, Di He, Yinpeng Dong, Hang Su, Wei Chen, Jun Zhu, Tie-Yan Liu, Two Coupled Rejection Metrics Can Tell Adversarial Examples Apart. Conference on Computer Vision and Pattern Recognition (CVPR), 2022.

• Xinwei Sun, Botong Wu, Xiangyu Zheng, Chang Liu, Wei Chen, Tao Qin, and Tie-Yan Liu, Recovering Latent Causal Factor for Generalization to Distributional Shifts, Advances in Neural Information Processing Systems 35 (NeurIPS), 2021.

• Chang Liu, Xinwei Sun, Jindong Wang, Haoyue Tang, Tao Li, Tao Qin, Wei Chen, Tie-Yan Liu, Learning Causal Semantic Representation for out-of-distribution Prediction, Advances in Neural Information Processing Systems 35 (NeurIPS), 2021.

• Da Yu, Huishuai Zhang, Wei Chen, Jian Yin, and Tie-Yan Liu, Large Scale Private Learning via Low-rank Reparametrization, In Proceedings of the 38th International Conference on Machine Learning (ICML), 2021.

• Da Yu, Huishuai Zhang, Wei Chen, Jian Yin, and Tie-Yan Liu, Do not Let Privacy Overbill Utility: Gradient Embedding Perturbation for Private Learning, In Proceedings of the 9th International Conference of Learning Representations (ICLR), 2021.

• Da Yu, Huishuai Zhang, Wei Chen, Jian Yin, and Tie-Yan Liu, How Does Data Augmentation Affect Privacy in Machine Learning? In Proceedings of the 35th International Association for the Advancement of Artificial Intelligence Conference (AAAI), 2021.

• Da Yu, Huishuai Zhang, Wei Chen, Jian Yin, and Tie-Yan Liu, Gradient Perturbation is Underrated for Differentially Private Convex Optimization, In Proceedings of the 30th International Joint Conference on Artificial Intelligence (IJCAI), 2020.

• Da Yu, Huishuai Zhang, and Wei Chen, Improving Gradient Perturbation for Differentially Private Optimization, NeurIPS Workshop on Privacy Preserving Machine Learning</i>, 2018.

Deep Learning Theory and Algorithms

• Wenjie Zhou, Bohan Wang, Hongtao Zhang, Chenxi Jia, Wei Chen, Xueqi Cheng，Extra-Merge: Tracing the Rank-1 Subspace of Model Merging in Language Model Pre-Training，In Proceedings of the 43rd International Conference on Machine Learning (ICML), 2026.

• Hongtao Zhang, Wenjie Zhou, Chenxi Jia, Wei Chen, Xueqi Cheng，The Stability of Singular Distribution: A Spectral Perspective on the Two-Phase Dynamics of Language Model Pre-training，In Proceedings of the 43rd International Conference on Machine Learning (ICML), 2026.

• Yancheng Chen, Dun Ma, Shuai Zhang, Yang Liu, Xixun Lin, Xiangyu Zhao, Wenguo Yang, Wei Chen, Chuan Zhou，Message Tuning Outshines Graph Prompt Tuning: A Prismatic Space Perspective，In Proceedings of the 43rd International Conference on Machine Learning (ICML), 2026.

• Wenjie Zhou, Bohan Wang, Wei Chen, Xueqi Cheng, BSFA: Leveraging the Subspace Dichotomy to Accelerate Neural Network Training. 2025 Conference on Empirical Methods in Natural Language Processing. (EMNLP), 2025.

• Bohan Wang, Huishuai Zhang, Qi Meng, Ruoyu Sun, Zhi-Ming Ma, Wei Chen, Randomly-reshuffled Adam can provably converge under non-uniform smoothness. The 30th SIGKDD Conference on Knowledge Discovery and Data Mining (SIGKDD), 2024.

• Wenjie Zhou, Bohan Wang, Wei Chen, Zhi-Ming Ma, Xueqi Cheng, Momentum Gradient Descent over single-neuron linear network: rich behaviors of limiting Sharpness. Bridging the Gap Between Practice and Theory in Deep Learning (BGPT) ICLR workshop, 2024.

• Bohan Wang, Jingwen Fu, Huishuai Zhang, Nanning Zheng, Wei Chen. Closing the Gap between the Upper Bound and Lower Bound of Adam’s Iteration Complexity. Advances in Neural Information Processing Systems 37 (NeurIPS), 2023

• Bohan Wang, Huishuai Zhang, Zhi-Ming Ma, Wei Chen, Convergence of AdaGrad for Non-convex Objectives: Simple Proofs and Relaxed Assumptions. The 36th Annual Conference on Learning Theory (COLT), 2023.

• Shiqi Gong, Qi Meng, Yue Wang, Lijun Wu, Wei Chen, Zhiming Ma, Tie-Yan Liu, Incorporating NODE with Pre-trained Neural Differential Operator for Learning Dynamics. Neurocomputing, Volume 528, pages 48-58, 2023.

• Bohan Wang, Qi Meng, Huishuai Zhang, Ruoyu Sun, Wei Chen, Zhi-Ming Ma, Tie-Yan Liu, Does Momentum Change the Implicit Regularization on Seperable Data? Advances in Neural Information Processing Systems 36 (NeurIPS), 2022.

• Weitao du, He Zhang, Yuanqi Du, Qi Meng, Wei Chen, Tie-Yan Liu, Nanning Zheng, Bin Shao, Equivariant Graph Neural Networks with Complete Local Frames. In Proceedings of the 39th International Conference on Machine Learning (ICML), 2022.

• Chongchong Li, Yue Wang, Wei Chen, Yuting Liu, Zhi-Ming Ma, and Tie-Yan Liu, Gradient Information Matters in Policy Optimization by Back-propagating through Model. The 10th International Conference on Learning Representations(ICLR), 2022.

• Sang-gil Lee, Heeseung Kim, Chaehun Shin, Xu Tan, Chang Liu, Qi Meng, Tao Qin, Wei Chen, Sungroh Yoon, Tie-Yan Liu, PriorGrad: Improving Conditional Denoising Diffusion Models with Data-Dependent Adaptive Prior.The 10th International Conference on Learning Representations(ICLR), 2022.

• Bohan Wang, Huishuai Zhang, Jieyu Zhang, Qi Meng, Wei Chen, Tie-Yan Liu, Optimizing Information-theoretic Generalization Bound via Anisotropic Noise of SGLD, Advances in Neural Information Processing Systems 35 (NeurIPS), 2021.

• Xiaobo liang, Lijun Wu, Juntao Li, Yue Wang, Qi Meng, Tao Qin, Wei Chen, Min Zhang, Tie-Yan Liu, R-Drop: Regularized Dropout for Neural Networks, Advances in Neural Information Processing Systems 35 (NeurIPS), 2021.

• Ziming Liu, Bohan Wang, Qi Meng, Wei Chen, Max Tegmark, Tie-Yan Liu, Machine-Learning Non-conservative Dynamics for New-Physics Detection, Accepted by Physical Review E, 2021.

• Bohan Wang, Qi Meng, Wei Chen, and Tie-Yan Liu, The Implicit Bias for Adaptive Optimization Algorithms on Homogeneous Neural Networks, In Proceedings of the 38th International Conference on Machine Learning (ICML) with long presentation, 2021.

• Xufang Luo, Qi Meng, Wei Chen, Yunhong Wang, and Tie-Yan Liu, Path-BN: Towards Effective Batch Normalization in the Path Space for ReLU Networks, In Proceedings of the 37th Conference on Uncertainty in Artificial Intelligence (UAI), 2021.

• Juanping Zhu, Qi Meng, Wei Chen, Yue Wang, and Zhi-Ming Ma, Interpreting the Basis Path Set in Neural Networks, Journal of System Science and Complexity, 2021.

• Huishuai Zhang, Da Yu, Mingyang Yi, Wei Chen, and Tie-Yan Liu, Stablize Deep ResNets with A Sharp Scaling \tau, Machine Learning, 2021.

• Juanping Zhu, Qi Meng, Wei Chen, and Zhi-Ming Ma, Interpreting the Basis Path Set in Neural Networks, Journal of System Science and Complexity, Vol(33):1-13, 2020.

• Xufang Luo, Qi Meng, Di He, Wei Chen, and Yonghong Wang, I4R: Promoting Deep Reinforcement Learning by the Indicator for Expressive Representations, In Proceedings of the 30th International Joint Conference on Artificial Intelligence (IJCAI), 2020.

• Ling Pan, Qingpeng Cai, Qi Meng, Wei Chen, and Longbo Huang, Reinforcement Learning with Dynamic Boltzmann Softmax Updates, In Proceedings of the 30th International Joint Conference on Artificial Intelligence (IJCAI), 2020.

• Mingyang Yi, Huishuai Zhang, Wei Chen, Zhi-Ming Ma, and Tie-Yan Liu, BN-invariance Sharpness Regularizes the Training Model to Better Generalization, In Proceedings of the 29th International Joint Conference on Artificial Intelligence (IJCAI), 2019.

• Qi Meng*, Shuxin Zheng*, Huishuai Zhang, Wei Chen, Zhi-Ming Ma, and Tie-Yan Liu, G-SGD: Optimizing ReLU Neural Networks in its Positively Scale-Invariant Space, In Proceedings of the 7th International Conference of Learning Representations (ICLR), 2019, Code.

• Shuxin Zheng, Qi Meng, Huishuai Zhang, Wei Chen, and Tie-Yan Liu, Capacity Control of ReLU Neural Networks by Basis-path Norm, In Proceedings of the 33rd International Association for the Advancement of Artificial Intelligence Conference (AAAI), 2019.

• Zhuohan Li, Di He, Fei Tian, Wei Chen, Tao Qin, Liwei Wang, and Tie-Yan Liu, Towards Binary-Valued Gates for Robust LSTM Training, In Proceeding of the 35th International Conference on Machine Learning （ICML), 2018.

• Huishuai Zhang, Wei Chen, and Tie-Yan Liu, On the Local Hessian in Back-propagation, In Advances in Neural Information Processing Systems 32 (NeurIPS), 2018.

• Yue Wang, Wei Chen, Yuting Liu, Zhi-Ming Ma, and Tie-Yan Liu, Finite Sample Analysis of GTD Policy Evaluation Algorithms in Markov Setting, In Advances in Neural Information Processing Systems 31 (NeurIPS), 2017.

• Guolin Ke, Qi Meng, Taifeng Wang, Wei Chen, Weidong Ma, Tie-Yan Liu, LightGBM: A Highly Efficient Gradient Boosting Decision Tree, In Advances in Neural Information Processing Systems 31 (NeurIPS), 2017.

• Yingce Xia, Tao Qin, Wei Chen and Tie-Yan Liu, Dual Supervised Learning, In Proceeding of the 34th International Conference on Machine Learning (ICML), 2017.

• Shizhao Sun, Wei Chen, Jiang Bian, Xiaoguang Liu and Tie-Yan Liu, Ensemble-Compression: A New Method for Parallel Training of Deep Neural Networks, European Conference on Machine Learning (ECML), 2017.

• Quanming Yao, James Kwok, Fei Gao, Wei Chen, and Tie-Yan Liu, Efficient Inexact Proximal Gradient Algorithm for Nonconvex Problems, In Proceedings of the 27th International Joint Conference on Artificial Intelligence (IJCAI), 2017.

• Qi Meng, Yue Wang, Wei Chen, Taifeng Wang, Zhi-Ming Ma and Tie-Yan Liu, Generalization Error Bounds for Optimization Algorithms via Stability, Proceedings of the 31st International Association for the Advancement of Artificial Intelligence Conference (AAAI), 2017.

• Wei Chen, Tie-Yan Liu, and Xinxin Yang, Reinforcement Learning Behaviors in Sponsored Search, Applied Stochastic Models in Business and Industry,2016.

• Shizhao Sun, Wei Chen, Liwei Wang, Xiaoguang Liu, and Tie-Yan Liu, On the Depth of Deep Neural Networks: A Theoretical View, In Proceedings of the 30th International Association for the Advancement of Artificial Intelligence Conference (AAAI), 2016.

• Tie-Yan Liu, Wei Chen, and Tao Qin, Mechanism Learning with Mechanism Induced Data, Senior Member Track, In Proceedings of the 29th International Association for the Advancement of Artificial Intelligence Conference (AAAI), 2015.

• Haifang Li, Tian Fei, Wei Chen, Tao Qin, Zhiming Ma, and Tie-Yan Liu, Generalization Analysis for Game-Theoretic Machine Learning, Proceedings of the 29th International Association for the Advancement of Artificial Intelligence Conference (AAAI), 2015.

Distributed Machine Learning

• Shicong Cen, Huishuai Zhang, Yuejie Chi, Wei Chen, and Tie-Yan Liu, Convergence of Distributed Stochastic Variance Reduced Methods without Sampling Extra Data, IEEE Transactions on Signal Processing, 2020.

• Li He, Shuxin Zheng, Wei Chen, Zhi-Ming Ma, and Tie-Yan Liu, OptQuant: Distributed Training of Neural Networks with Optimized Quantization Mechanism, NeuroComputing, 2019.

• Qi Meng, Wei Chen, Zhi-Ming Ma, and Tie-Yan Liu, Convergence Analysis of Distributed Stochastic Gradient Descent with Shuffling, NeuroComputing, 2019.

• Li He, Qi Meng, Wei Chen, Zhi-Ming Ma, and Tie-Yan Liu, Differential Equations for Modeling Asynchronous Algorithms, In Proceedings of the 28th International Joint Conference on Artificial Intelligence (IJCAI), 2018.

• Shizhao Sun, Wei Chen, Jiang Bian, Xiaoguang Liu, and Tie-Yan Liu, Slim-DP: A Multi-Agent System for Communication-Efficient Distributed Deep Learning, In Proceeding of the 17th International Conference on Autonomous Agents and Multiagent Systems (AAMAS), 2018.

• Shuxin Zheng*, Qi Meng*, Taifeng Wang, Wei Chen, Zhi-Ming Ma and Tie-Yan Liu, Asynchronous Stochastic Gradient Descent with Delay Compensation, In Proceeding of the 34thInternational Conference on Machine Learning (ICML), 2017.

• Qi Meng, Wei Chen, Jingcheng Yu, Taifeng Wang, Zhi-Ming Ma and Tie-Yan Liu, Asynchronous Stochastic Proximal Optimization Algorithms with Variance Reduction, Proceedings of the 31st International Association for the Advancement of Artificial Intelligence Conference (AAAI), 2017.

• Qi Meng, Guolin Ke, Taifeng Wang, Wei Chen, Qiwei Ye, Zhi-Ming Ma, and Tie-Yan Liu, A Communication-efficient Parallel Algorithms for Decision Tree, Advances in Neural Information Processing Systems 30 (NeurIPS), 2016.

• Qi Meng, Wei Chen, Jingcheng Yu, Taifeng Wang, Zhi-Ming Ma, and Tie-Yan Liu, Asynchronous Accelerated Stochastic Gradient Descent, In Proceedings of the 26th International Joint Conference on Artificial Intelligence (IJCAI), 2016.

Ranking and Auctions

• Wei Huang, Keping Bi, Yingqiong Cai, Wei Chen, Jiafeng Guo, Xueqi Cheng, How Do LLM-Generated Texts Impact Term-Based Retrieval Models? The 18th ACM International Conference on Web Search and Data Mining (WSDM), 2025.

• Yinqiong Cai, Keping Bi, Yixing Fan, Jiafeng Guo, Wei Chen, Xueqi Cheng, L^2R:Lifelong Learning for First-stage Retrieval with Backward-Compatible Representations. The 32nd ACM International Conference on Information and Knowledge Management (CIKM), 2023.

• Jiangui Chen, Ruqing Zhang, Jiafeng Guo, Maarten de Rijke, Wei Chen, Yixing Fan, Xueqi Cheng, Continual Learning for Generative Retieval over Dynamic Corpora. The 32nd ACM International Conference on Information and Knowledge Management (CIKM), 2023.

• Tao Qin, Wei Chen, and Tie-Yan Liu, Sponsored Search Auctions: Recent Advances and Future Directions, ACM Transactions on Intelligent Systems and Technology (TIST),5 (4), 2014.

• Wei Chen, Di He, Tie-Yan Liu, Tao Qin, Yixin Tao, and Liwei Wang, Generalized Second Price Auction with Probabilistic Broad Match, In Proceedings of the 15th ACM Conference on Economics and Computation (ACM EC), Pages 39-56, 2014.

• Fei Tian, Haifang Li, Wei Chen, Tao Qin and Tie-Yan Liu, Agent Behavior Prediction and Its Generalization Analysis, In Proceedings of the 28th International Association for the Advancement of Artificial Intelligence Conference (AAAI), Pages 1300-1306, 2014.

• Jun Feng, Jiang Bian, Taifeng Wang, Wei Chen, Xiaoyan Zhu and Tie-Yan Liu, Sampling Dilemma: Towards Effective Data Sampling for Click Prediction in Sponsored Search, In Proceedings of 7th ACM Conference on Web Search and Data Mining (WSDM), Pages 130-112, 2014.

• Di He, Wei Chen, Liwei Wang, and Tie-Yan Liu, Online Learning for Auction Mechanism in Bandit Setting, Decision Support Systems (DSS), Vol 56, Pages 379-386, 2013.

• Di He, Wei Chen, Liwei Wang, and Tie-Yan Liu, Probabilistic Broad Match for Sponsored Search Auctions, EC AdAuction Workshop 2013.

• Yining Wang, Liwei Wang, Yuanzhi Li, Di He, Wei Chen, and Tie-Yan Liu, A Theoretical Analysis of NDCG Type Ranking Measures, In Proceedings of the 26th Annual Conference on Learning Theory (COLT), Pages 25-54,2013

• Di He, Wei Chen, Liwei Wang, Tie-Yan Liu, A Game-theoretic Machine Learning Approach for Revenue Maximization in Sponsored Search, In Proceedings of the 23rd International Joint Conference on Artificial Intelligence (IJCAI), Pages 206-212, 2013.

• Lei Yao, Wei Chen, Tie-Yan Liu. Convergence Analysis for Weighted Joint Strategy Fictitious Play in Generalized Second Price Auction, Proceedings of the 10th Conference on Web and Internet Economics (WINE), Pages 489-495, 2012.

• Wei Chen, Tie-Yan Liu, and Zhi-Ming Ma, Two-Layer Generalization Analysis for Ranking Using Rademacher Average, Advances in Neural Information Processing Systems 23 (NeurIPS), Pages 370-378, 2010.

• Wei Chen, Tie-Yan Liu, Yanyan Lan, and Zhi-Ming Ma, Ranking Measures and Loss functions in Learning to Rank, Advances in Neural Information Processing Systems 22 (NeurIPS), Pages 315-323, 2009.