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Qian-Cheng Zhou

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#artificial intelligence Preprint Aug 2026

Locked at the Entrance, Open Inside: Where RLVR Narrows the Solution Space

While surface prompting fails to recover diversity, entrance-targeted interventions succeed: late-layer parameter interpolation with early checkpoints increases solution coverage by 37% at no loss in pass@1 and late-layer parameter interpolation with early checkpoints increases solution coverage by 37% at no loss in pass@1.

Qian-Cheng Zhou, Rui-Zhe Li · 0 citations