Author

Peter Chen

h-index 7 View on Semantic Scholar

We have 2 of 10 papers

We haven’t gathered this author’s papers yet. Follow them and we’ll fetch their work.

Not the right person? Other researchers publish under this name.

#artificial intelligence Jun 2026

Two-Fidelity Best-Action Identification for Stochastic Minimax Tree

2FFS is proposed, a two-fidelity tree-search algorithm that brings multi-fidelity flat bandit ideas into trees and proves fixed-confidence correctness, establish finite stopping for exact identification, and give a polynomial-depth cost upper bound for general-depth trees.

Peter Chen, Xi Chen · arXiv.org · 1 citation

#artificial intelligence Preprint Sep 2026

A Zeroth-Order Paradigm for LLM Preference Alignment

This paper proposes and analyzes Comparison-based Preference Optimization (ComPO), a zeroth-order alignment method based on comparison oracles, and establishes a convergence guarantee for its basic offline scheme under smoothness, gradient sparsity, and compatibility between the oracle and a latent objective.

Peter Chen, Xi Chen, Wo-Tao Yin et al. · 0 citations