Author

Jian-Shen Zhang

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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

#artificial intelligence Preprint Sep 2026

When Should a World Model Move? Loss-Conditioned State Execution

We introduce loss-conditioned state execution, a model-agnostic method that decides whether to execute a world model's fixed feasible proposal or retain the current state. Predictive informativeness alone, however, does not establish whether an update will reduce downstream loss. Occurrence ranking can approach perfect...

Jin-Tao Xu, Zheng-Yu Chen, Benjamin J. Zhang et al. · 0 citations