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Yang Chen

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#artificial intelligence Review Oct 2026

When Agents Fail: Model or Harness--Who's to Blame?

LLM agents combine models with execution harnesses, so agentic benchmark performance reflects their joint behavior. We argue that harnesses should therefore be evaluated through their interactions with underlying models. We develop a framework combining five complementary measures: (i) Valid Completion Rate (VCR), how...

Shao Zhang, Hang-Fan Zhang, Yuan-Yuan Shi et al. · 0 citations
#artificial intelligence Preprint Sep 2026

Loop-Free Inverse Reinforcement Learning via Sequential Value Recovery with Q-Score Matching

Inverse Reinforcement Learning (IRL) aims to recover a reward function that explains expert demonstrations. Existing IRL methods typically rely on a bi-level optimization procedure that alternates between reward learning and policy optimization, leading to substantial computational burden and training instability. In t...

Yang Chen, Yi-Tan Zhang, Michael J. Witbrock et al. · 0 citations
Preprint Aug 2026

SKT: Skill-Use Training at Scale via Verified Synthetic Data Generation

Experiments across diverse models, benchmarks, and agent harnesses show that supervised fine-tuning on SKT-generated trajectories consistently improves skill-use performance, establishing verified data synthesis as an effective and scalable approach for skill-use training.

Zelin Tan, Yi-Qun Zhang, Hao Li et al. · 2 citations
#artificial intelligence Preprint Sep 2026

Harness-of-Harness: Multi-Day Autonomous Software Development with Continual Improvement

In a multi-day deployment with more than 70 iterations, HoH autonomously develops a first-person-shooter game, featuring a coherent storyline, fully implemented core mechanics, human-playable experience, polished visuals and integrated audio.

Hao Yan, Min-Le Su, Hang-Fan Zhang et al. · 4 citations
Preprint Aug 2026

AgentPanel: Toward a New Paradigm for Human--AI Collaboration in Exploring Scientific Questions

This work presents AgentPanel, a multi-agent forum for human--AI collaboration in scientific exploration, a multi-agent forum for human--AI collaboration in scientific exploration that outperforms a centralized multi-agent debate baseline and shows that users value AgentPanel for perspective diversity and exploration s...

Zhi-Yao Cui, Qianyi Wang, Hao Yan et al. · 1 citation

Stabilizing Rubric Integration Training via Decoupled Advantage Normalization

We propose Process-Aware Policy Optimization (PAPO), a method that integrates process-level evaluation into Group Relative Policy Optimization (GRPO) through decoupled advantage normalization, to address two limitations of existing reward designs. Outcome reward models (ORM) evaluate only final-answer correctness, trea...

Zelin Tan, Zhouliang Yu, Bo-Cheng Lin et al. · 4 citations

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