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Run-Hao Li

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#artificial intelligence Preprint Sep 2026

What Does Multi-Harness RL Learn? Credit Assignment and Portability in Coding Agents

Agent reinforcement learning (RL) increasingly runs through full execution harnesses, and a multi-harness recipe mixes two choices: exposing the policy to several harnesses, and comparing their rewards inside one relative-advantage group. We isolate the second choice in repository-level coding. From one Qwen3-8B superv...

Chen-Qian Le, Jia-Yi Cheng, Qi-Jia He et al. · 1 citation
Jul 2026

Less Data, Better Alignment: Data-Centric Multi-Evaluator Agreement for Preference Optimization

This method generates candidate responses from the target policy, evaluates helpfulness, factuality, and conciseness with rubric-specialized evaluators, applies a process-critic correction, and retains only high-consensus desirable or undesirable examples.

Zhengtao Yao, Run-Hao Li, Xu-Peng Chen et al. · 0 citations
Jul 2026

PreDiff-LM: Pretrained Discrete Masked Diffusion Language Modeling with Hybrid Attention

PreDiff-LM preserves causal attention within the observed prompt while allowing full bidirectional attention within the masked target, position hybrid attention as a complementary mechanism for adapting pretrained causal backbones, while making explicit the remaining quality and inference-efficiency gaps to optimized A...

Zhengtao Yao, Run-Hao Li, Xu-Peng Chen et al. · 0 citations

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