Author

Renfei Tan

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Preprint Jul 2026

When Reasoning Narrows the Move: Diversity Collapse in LLM Game Play

This work identifies narrow-support imitation as a source of policy collapse in LLM decision-making and suggests that preserving action support during SFT is important for maintaining exploratory behavior.

Junyi Sha, Renfei Tan, David Simchi-Levi · 0 citations