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Luan Zhang

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#natural language process... Preprint Sep 2026

Explore Before Committing: Hypothesis-Guided Search for Deep Research Agents

HypoSearch is proposed, which generates lightweight hypotheses as soft search hints, explores them through bounded independent branches, and compares branch-level evidence before commitment, and consistently outperforms single-trajectory search and standard parallel baselines.

Ruo-Chen Zhou, Zheng-Zong Chen, Luan Zhang et al. · 1 citation
Preprint Aug 2026

HarnessCompass: Guiding Automatic Harness Evolution toward Generalizable and Effective Agent Harnesses

HarnessCompass is proposed, a novel automatic harness evolution framework built around constrained evolution, proactive feedback, and component-wise optimization that improves Pass@1 from 54\% to 66\% in only 5 evolution iterations, outperforming AHE in both effectiveness and evolution efficiency.

Luan Zhang, Ruo-Chen Zhou, Dan-Dan Song et al. · 10 citations · ⚡1
Jul 2026

Co-Harness: Co-Evolving Harnesses and Model Weights for LLM Agents

Co-Harness is introduced, a framework that jointly optimizes the agent harness and model parameters during post-training and suggests that joint harness and model optimization is an effective way to improve agents beyond fixed-harness post-training.

Zhengyu Chen, Teng Xiao, Huaisheng Zhu et al. · 4 citations

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