Scaling Online Optimal Transport Minibatches for Flow Matching

Peter Chen, Sergey Levine

Under Review

Training Numerical Intelligence via Auto-Diagnosis and Skill Discovery

Peter Chen, Wotao Yin

Under Review

[Paper]

A Zeroth-Order Paradigm for LLM Preference Alignment

Peter Chen, Xi Chen, Wotao Yin, Tianyi Lin

Journal of Machine Learning Research (JMLR), Under Review

[Paper]

Two-Fidelity Best-Action Identification for Stochastic Minimax Tree

Peter Chen, Xi Chen

Advances in Neural Information Processing Systems 39 (NeurIPS 2026)

[Paper] [Code]

Exploration vs Exploitation: Rethinking RLVR through Clipping, Entropy, and Spurious Reward

Peter Chen, Xiaopeng Li, Ziniu Li, Wotao Yin, Xi Chen, Tianyi Lin

Proceedings of the International Conference on Learning Representations (ICLR 2026)

[Paper]

ComPO: Preference Alignment via Comparison Oracles

Peter Chen, Xi Chen, Wotao Yin, Tianyi Lin

Advances in Neural Information Processing Systems 38 (NeurIPS 2025)

[HuggingFace🤗] [Paper] [Code] [Talk Slides]

GenEnv: Difficulty-Aligned Co-Evolution Between LLM Agents and Environment Simulators

Jiacheng Guo$^*$, Ling Yang$^*$, Peter Chen$^*$, Qixin Xiao$^*$, Yinjie Wang, Xinzhe Juan, Jiahao Qiu, Ke Shen, Mengdi Wang

Advances in Neural Information Processing Systems 39 (NeurIPS 2026)

[Paper] [Code]

3D Cell Oversegmentation Correction via Geo-Wasserstein Divergence

Peter Chen, Bryan Chang, Olivia Annette Creasey, Julie Beth Sneddon, Zev Gartner, Yining Liu

Proceedings of the IEEE/CVF Winter Conference on Applications of Computer Vision (WACV 2026)

[Paper] [Code]

Stepwise Guided Policy Optimization: Coloring your Incorrect Reasoning in GRPO

Peter Chen, Xiaopeng Li, Ziniu Li, Xi Chen, Tianyi Lin

Transactions on Machine Learning Research (TMLR 2026)

[HuggingFace🤗] [Paper]