Author

Liang Chen

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Preprint Oct 2026

One Act, Many Masks: Effect-Marginal Policy Optimization for Long-Horizon Agents

This work proposes Effect-Marginal Policy Optimization (EMPO), which aligns policy optimization with execution-level equivalence through an effect-level surrogate that couples updates across alternative textual realizations, and shows that EMPO outperforms strong baselines in both task performance and learning efficien...

Shao-Jin Ma, Rui-Tao Wang, Peng-Yi Li et al. · 0 citations

#artificial intelligence Preprint Oct 2026

ACE-Compression: An Ability-Centric Evaluation of Compressed Large Language Models

Model compression makes large language models deployable, but today's evaluation tells an incomplete story. Standard practice measures retained task performance and stops there. This misses a critical fact: compression perturbs the distributed knowledge embedded across billions of weights, and task scores alone cannot...

Jia-Hui Ning, Liang Chen, Yu-Chen Liang et al. · 0 citations