Peter Lau-Luk Chen 陳劉麓
Logo Department of Mathematics, Columbia University

I am an undergradute student from Columbia, advised by Prof. Andrew Blumberg and Prof. Tianyi Lin. I am a part of the Geometric Data Analysis Group in Columbia. I am now working closely with Prof. Mengdi Wang and her group in Princeton.

My research interest broadly lies in the intersection of Machine Learning (LLM Pre/Post Training, Deep Generative Models), Optimization (Convex & Non-convex & Non-Smooth & Zeroth-Order Optimization, Optimal Transport), and Geometric Data Analysis (Manifold Learning, Topological Data Analysis).

Currently, my works are focusing on LLM Alignment & Preference Optimization, LLM Reasoning, Zeroth-Order Optimization, and Geometry Processing. My research is partially supported by the HKU-IDS Research Grant.


Education
  • Columbia College, Columbia University
    Columbia College, Columbia University
    B.A. in Mathematics / Computer Science
    May. 2026
Experience
  • Princeton University
    Princeton University
    Research Intern; Hosted by Prof. Mengdi Wang
    Feb. 2025 - Present
  • Department of IEOR, Columbia University
    Department of IEOR, Columbia University
    Researcher; Supervised by Prof. Tianyi Lin
    Sep. 2024 - Present
  • HKU Musketeers Foundation Institute of Data Science
    HKU Musketeers Foundation Institute of Data Science
    Visiting Research Associate; Hosted by Prof. Yue Xie, Prof. Qingpeng Zhang
    May. 2024 - Jan. 2025
  • Geometric Data Analysis Group, Columbia University
    Geometric Data Analysis Group, Columbia University
    Researcher; Supervised by Prof. Andrew Blumberg
    Dec. 2023 - Present
Teaching & Service
  • TA for MATH 2500 Analysis & Optimization (Sp 24/Fa 24/Sp 25)
    Jan. 2024 - Present
  • Reviewer for ICLR (2025), AAAI (2025)
    Present
Selected Publications (view all )
ComPO: Zeroth-Order Preference Optimization via Comparison Oracles
ComPO: Zeroth-Order Preference Optimization via Comparison Oracles

Peter Chen, Xi Chen, Wotao Yin, Tianyi Lin

NeurIPS 2025, In Submission

ComPO: Zeroth-Order Preference Optimization via Comparison Oracles

Peter Chen, Xi Chen, Wotao Yin, Tianyi Lin

NeurIPS 2025, In Submission

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

Peter Chen, Yue Xie, Qingpeng Zhang

ICML 2025, Under Review

Displacement-Sparse Neural Optimal Transport

Peter Chen, Yue Xie, Qingpeng Zhang

ICML 2025, Under Review

Geometric Framework for 3D Cell Segmentation Correction
Geometric Framework for 3D Cell Segmentation Correction

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

ICML 2025, Under Review

Geometric Framework for 3D Cell Segmentation Correction

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

ICML 2025, Under Review

SICNN: Sparsity-induced Input Convex Neural Network

Peter Chen, Yue Xie, Qingpeng Zhang

NeurIPS 2024 Optimization for Machine Learning

SICNN: Sparsity-induced Input Convex Neural Network

Peter Chen, Yue Xie, Qingpeng Zhang

NeurIPS 2024 Optimization for Machine Learning

All publications