Author

Wenyuan Shen

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Preprint Aug 2026

Router Sensitivity Under Lightweight Fine-Tuning Identifies Prunable Experts in Mixture-of-Experts Models

Lightweight router sensitivity makes provably motivated, task-conditioned expert pruning practical at scale and ranks experts by the induced router change, and prune the least-changed experts in one shot.

Ali Janati, K. El Maghraoui, Cheng-Ke Zou et al. · 0 citations