Learning to Better Search with Language Models via Guided Reinforced Self-Training

Fuente: arXiv
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Autori principali: Moon, Seungyong, Park, Bumsoo, Song, Hyun Oh
Natura: Preprint
Pubblicazione: 2024
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author Moon, Seungyong
Park, Bumsoo
Song, Hyun Oh
author_facet Moon, Seungyong
Park, Bumsoo
Song, Hyun Oh
contents While language models have shown remarkable performance across diverse tasks, they still encounter challenges in complex reasoning scenarios. Recent research suggests that language models trained on linearized search traces toward solutions, rather than solely on the final solutions, exhibit improved generalization, despite the search traces being potentially noisy or suboptimal. However, relying on such imperfect traces can result in inefficient use of test-time compute. To address this, we propose guided reinforced self-training (Guided-ReST), a fine-tuning algorithm designed to improve the model's capability for effective search during inference. The key insight behind Guided-ReST is that optimal solutions can serve as valuable step-by-step landmarks to guide the model's search process. Based on this insight, we introduce a novel data generation method that seamlessly incorporates optimal solutions into the model's search procedure, enabling the generation of high-quality search traces. By fine-tuning the model on these search traces, we effectively distill improved search strategies into the model. Our method significantly enhances the search capabilities of language models on arithmetic reasoning and code self-repair tasks, including Countdown, CodeContests, and CodeForces. We release the source code at https://github.com/snu-mllab/guided-rest.
format Preprint
id arxiv_https___arxiv_org_abs_2410_02992
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Learning to Better Search with Language Models via Guided Reinforced Self-Training
Moon, Seungyong
Park, Bumsoo
Song, Hyun Oh
Artificial Intelligence
Computation and Language
While language models have shown remarkable performance across diverse tasks, they still encounter challenges in complex reasoning scenarios. Recent research suggests that language models trained on linearized search traces toward solutions, rather than solely on the final solutions, exhibit improved generalization, despite the search traces being potentially noisy or suboptimal. However, relying on such imperfect traces can result in inefficient use of test-time compute. To address this, we propose guided reinforced self-training (Guided-ReST), a fine-tuning algorithm designed to improve the model's capability for effective search during inference. The key insight behind Guided-ReST is that optimal solutions can serve as valuable step-by-step landmarks to guide the model's search process. Based on this insight, we introduce a novel data generation method that seamlessly incorporates optimal solutions into the model's search procedure, enabling the generation of high-quality search traces. By fine-tuning the model on these search traces, we effectively distill improved search strategies into the model. Our method significantly enhances the search capabilities of language models on arithmetic reasoning and code self-repair tasks, including Countdown, CodeContests, and CodeForces. We release the source code at https://github.com/snu-mllab/guided-rest.
title Learning to Better Search with Language Models via Guided Reinforced Self-Training
topic Artificial Intelligence
Computation and Language
url https://arxiv.org/abs/2410.02992