Publications

Research output

Work on reinforcement learning, post-training, and optimization. Use “Copy BibTeX” to copy a paper's citation in one click.

Preview of SPPO: Sequence-Level PPO for Long-Horizon Reasoning
ACL 2026 Oral Co-first Author

SPPO: Sequence-Level PPO for Long-Horizon Reasoning

Tianyi Wang*, Yixia Li*, Long Li, Yibiao Chen, Shaohan Huang, Yun Chen, Peng Li, Yang Liu, Guanhua Chen
Reformulates long-horizon reasoning as a sequence-level contextual bandit with a decoupled scalar value function to improve stability and reduce memory cost.
Paper Code
Preview of DyJR: Preserving Diversity in Reinforcement Learning with Verifiable Rewards via Dynamic Jensen-Shannon Replay
Under Review

DyJR: Preserving Diversity in Reinforcement Learning with Verifiable Rewards via Dynamic Jensen-Shannon Replay

Long Li, Zhijian Zhou, Tianyi Wang, Weidi Xu, Zuming Huang, Wei Chu, Zhe Wang, Shirui Pan, Chao Qu, Yuan Qi
Introduces Dynamic Jensen-Shannon Replay to preserve diversity in reinforcement learning through verifiable rewards mechanism.
Paper
Preview of Anchored Policy Optimization: Mitigating Exploration Collapse via Support-Constrained Rectification
ICML 2026 Co-first Author

Anchored Policy Optimization: Mitigating Exploration Collapse via Support-Constrained Rectification

Tianyi Wang*, Long Li*, Hongcan Guo, Yibiao Chen, Yixia Li, Yong Wang, Yun Chen, Guanhua Chen
Introduces support-constrained rectification for RLVR to mitigate exploration collapse and improve both Pass@1 and response diversity.
Paper Code