Author

Zhipeng Wang

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#artificial intelligence Preprint Oct 2026

Reconstruction-Optimized Expert Pruning for Mixture-of-Experts Language Models

OptEP is developed, a scalable continuous relaxation that directly optimizes differentiable expert-selection variables, followed by a lightweight reconstruction-based update of the retained expert weights, demonstrating that reconstruction-driven expert selection and weight adaptation can preserve substantially more of...

Jelena Markovic-Voronov, P. Prastakos, Kayhan Behdin et al. · 0 citations

Jul 2026

TREK: Distill to Explore, Reinforce to Refine

TREK (Teacher-Routed Exploration via Forward KL), a simple staged procedure that uses distillation not for imitation but for exploration support expansion, achieves high success rates early in training while unaided GRPO requires substantially more optimization steps to reach comparable levels.

Yuanda Xu, Zhengze Zhou, Kayhan Behdin et al. · arXiv.org · 0 citations