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Author

Zuo-Jun Max Shen

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#artificial intelligence Preprint Oct 2026

CERO: Where and When to Allocate Rollouts for RL Post-Training

Adaptive rollout methods for group-relative reinforcement learning typically allocate a fixed per-update budget across prompts. We instead study how to coordinate a finite rollout budget over the entire training horizon. We formulate this problem using a concave surrogate utility of cumulative prompt exposure and intro...

Yi-Ming Zong, Yi-Ge Wang, Xin-Ting Hu et al. · 0 citations
Preprint Aug 2026

SSPO: Structure-Aware Similarity-Weighted Preference Optimization for Neural Combinatorial Optimization

Neural combinatorial optimization (NCO) relies on parallel solution sampling for training, yet existing methods fail to fully exploit the rich information latent in a co-sampled solution group. Preference-optimization methods anchor on the single best solution and discard fine-grained quality and structural signal from...

Yuan-Yu Li, Jin-Tao Xu, Zijiang Liu et al. · 0 citations
Preprint Aug 2026

DualCert: A Solver for the Traveling Salesman Problem with Constraint-Coupled Learning

DualCert introduces constraint-coupled learning, in which current degree equations and dynamically separated subtour-elimination constraints (SECs) define each learned transition, and achieves a mean tour-cost gap of 0.0573%, smaller than the reported NeuroLKH mean gap.

Yancheng Song, Yong-Zhi Qi, Wei Qi et al. · 0 citations

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