Long reasoning distillation may teach behavior more than factual knowledge

Experiments across three model families suggest that structured reasoning traces remain useful despite factual errors or limited prompt diversity.

Research Lab
Yongcan Yu · Jian Liang · Lingxiao He · Kuangpu Guo · Yanbo Wang · Shuo Lu · +2 more

Institute of Automation, Chinese Academy of Sciences · University of Chinese Academy of Sciences · Meituan · University of Science and Technology of China

Research Digest··2 min read
Yu and colleagues test whether long chain-of-thought distillation depends on correct answers and broad problem coverage, two assumptions behind common rejection-sampling pipelines.

1 families on long reasoning trajectories while varying three factors: whether trajectories were correct, how many distinct prompts generated them, and whether the student could already solve the training problems.

Why this paper

From Institute of Automation, Chinese Academy of Sciences and 3 others

In one line

Long-CoT distillation works by teaching models structured reasoning behavior, not by memorizing correct facts or broad problem coverage.

What we could check

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Research Digest

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