Sun, Yuchang

5 publications

ICLR 2026 Group-Relative REINFORCE Is Secretly an Off-Policy Algorithm: Demystifying Some Myths About GRPO and Its Friends Chaorui Yao, Yanxi Chen, Yuchang Sun, Yushuo Chen, Wenhao Zhang, Xuchen Pan, Yaliang Li, Bolin Ding

ICLR 2026 On-Policy RL Meets Off-Policy Experts: Harmonizing Supervised Fine-Tuning and Reinforcement Learning via Dynamic Weighting Wenhao Zhang, Yuexiang Xie, Yuchang Sun, Yanxi Chen, Guoyin Wang, Yaliang Li, Bolin Ding, Jingren Zhou

AAAI 2025 Learn How to Query from Unlabeled Data Streams in Federated Learning Yuchang Sun, Xinran Li, Tao Lin, Jun Zhang

ICLRW 2023 DABS: Data-Agnostic Backdoor Attack at the Server in Federated Learning Wenqiang Sun, Sen Li, Yuchang Sun, Jun Zhang

NeurIPS 2022 DReS-FL: Dropout-Resilient Secure Federated Learning for Non-IID Clients via Secret Data Sharing Jiawei Shao, Yuchang Sun, Songze Li, Jun Zhang