Emergent Response Planning in LLM

• URL: http://arxiv.org/abs/2502.06258v1
• Date: Mon, 10 Feb 2025 08:48:10 GMT
• Title: Emergent Response Planning in LLM
• Authors: Zhichen Dong, Zhanhui Zhou, Zhixuan Liu, Chao Yang, Chaochao Lu,
• Abstract summary: We show that large language models (LLMs) plan ahead for the future in their hidden representations.<n>The findings suggest potential applications for improving transparency and generation control.
• Score: 6.969916576925677
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: In this work, we argue that large language models (LLMs), though trained to predict only the next token, exhibit emergent planning behaviors: $\textbf{their hidden representations encode future outputs beyond the next token}$. Through simple probing, we demonstrate that LLM prompt representations encode global attributes of their entire responses, including $\textit{structural attributes}$ (response length, reasoning steps), $\textit{content attributes}$ (character choices in storywriting, multiple-choice answers at the end of response), and $\textit{behavioral attributes}$ (answer confidence, factual consistency). In addition to identifying response planning, we explore how it scales with model size across tasks and how it evolves during generation. The findings that LLMs plan ahead for the future in their hidden representations suggests potential applications for improving transparency and generation control.

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