2025

ComPO: Preference Alignment via Comparison Oracles
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]

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]

Beyong Contamination: Rethinking RLVR Learning Dynamics through Clipping, Entropy, and Random Rewards
Beyong Contamination: Rethinking RLVR Learning Dynamics through Clipping, Entropy, and Random Rewards

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

ICLR 2026, under review

[Tutorial] [Paper]

Beyong Contamination: Rethinking RLVR Learning Dynamics through Clipping, Entropy, and Random Rewards

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

ICLR 2026, under review

[Tutorial] [Paper]

Stepwise Guided Policy Optimization: Coloring your Incorrect Reasoning in GRPO
Stepwise Guided Policy Optimization: Coloring your Incorrect Reasoning in GRPO

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

ICLR 2026, under review

[HuggingFace🤗] [Paper]

Stepwise Guided Policy Optimization: Coloring your Incorrect Reasoning in GRPO

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

ICLR 2026, under review

[HuggingFace🤗] [Paper]

Displacement-Sparse Neural Optimal Transport
Displacement-Sparse Neural Optimal Transport

Peter Chen, Yue Xie, Qingpeng Zhang

Arxiv 2502.01889

[Paper] [Code]

Displacement-Sparse Neural Optimal Transport

Peter Chen, Yue Xie, Qingpeng Zhang

Arxiv 2502.01889

[Paper] [Code]

3D Cell Oversegmentation Correction via Geo-Wasserstein Divergence
3D Cell Oversegmentation Correction via Geo-Wasserstein Divergence

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

Arxiv 2502.01890

[Paper] [Code]

3D Cell Oversegmentation Correction via Geo-Wasserstein Divergence

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

Arxiv 2502.01890

[Paper] [Code]

2024

SICNN: Sparsity-induced Input Convex Neural Network

Peter Chen, Yue Xie, Qingpeng Zhang

NeurIPS 2024 Optimization for Machine Learning

[Paper] [Code]

SICNN: Sparsity-induced Input Convex Neural Network

Peter Chen, Yue Xie, Qingpeng Zhang

NeurIPS 2024 Optimization for Machine Learning

[Paper] [Code]