activity
20242026
collaborators

6 papers

cs.SE2026

Doc2Harness: Benchmarking LLMs on Long-Horizon Harness Engineering of Coding Agents

Yuyao Ge, Shenghua Liu, Peizhong Gao +8

Agents driven by large language models are increasingly deployed on long-horizon tasks, where they use tools and modify real workspaces. How well they perform depends as much on th…

math.OC2026

Optimal Convex Optimization with Inexact Second-Order Oracles

Lesi Chen, Chengchang Liu, Luo Luo +2

In this paper, we present a novel second-order method called Accelerated Inexact Newton Extragradient (AINE) for convex optimization using -inexact Hessians. We show that AINE c…

math.OC2025

Solving Convex-Concave Problems with Second-Order Oracle Complexity

Lesi Chen, Chengchang Liu, Luo Luo +1

Previous algorithms can solve convex-concave minimax problems with second-order oracle calls usin…

math.OC2025

Faster Newton Methods for Convex and Nonconvex Optimization in Gradient Complexity

Lesi Chen, Chengchang Liu, Luo Luo +1

Second-order optimization methods are computationally expensive for large-scale problems. Recently, Doikov, Chayti, and Jaggi (ICML 2023) proposed the LazyCRN method that reduces c…

math.OC2024

An Enhanced Levenberg--Marquardt Method via Gram Reduction

Chengchang Liu, Luo Luo, John C. S. Lui

This paper studied the problem of solving the system of nonlinear equations , where . We propose Gram-Reduced Lev…

math.OC2024

On the Complexity of Finite-Sum Smooth Optimization under the Polyak-Łojasiewicz Condition

Yunyan Bai, Yuxing Liu, Luo Luo

This paper considers the optimization problem of the form , where satisfies the…