Generalization of uncertainty–diversity patterns to semantic diversity

Determine whether the uncertainty–diversity patterns observed for lexical variation in generated rationales extend to semantic diversity.

Background

The paper’s analysis is restricted primarily to lexical diversity, using Unique-2 and Self-BLEU. Because semantically equivalent rationales may differ lexically while conveying similar reasoning, it remains unresolved whether the observed relationships between model uncertainty and rationale diversity also hold for semantic variation.

References

Future work could further investigate whether reducing post-training overconfidence comes at the cost of further reducing rationale diversity, and whether the observed uncertainty-diversity patterns extend beyond lexical variation to semantic diversity.

— Are You Sure You're Sure? On the Impact of Instruction Tuning on Confidence and Lexical Diversity  (2608.13430 - Proskurina et al., 13 Aug 2026) in Section 5, Conclusion