Author

Yejin Choi

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Open access Sep 2026

Intuitions of compromise: Utilitarianism, egalitarianism, contractualism.

What is the best compromise in a situation where different people value different things? The most common method for answering this question is to look at all the options, add up the utility per person associated with each, and pick the option with the largest sum. This approach seems like the obvious, theory-neutral s...

Jared Moore, Ye-Jin Choi, Sydney Levine · Cognition · 0 citations

#artificial intelligence Preprint Sep 2026

UniEvo-VL: An On-policy Self-Distillation Training Recipe for Multimodal Model Self-improvement

Modern multimodal models bring generation and understanding into a single unified system, which enables them to provide and learn from their own feedback. Motivated by this unified capacity, we introduce UniEvo-VL, a self-evolving framework for multimodal models to learn from this constructive self-correction feedback...

Fang Wu, Dan-Lei Xing, Yan-Jie Huang et al. · 0 citations

#natural language process... Jun 2026

Zone of Proximal Policy Optimization: Teacher in Prompts, Not Gradients

Zone of Proximal Policy Optimization (ZPPO), inspired by Vygotsky's zone of proximal development, is introduced, which outperforms off/on-policy distillation and GRPO, with the largest gains at the smallest scale.

Byung-Kwan Lee, Ximing Lu, Shi-Zhe Diao et al. · arXiv.org · 2 citations