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Mixed Distillation Helps Smaller Language Models Reason Better
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As large language models (LLMs) have demonstrated impressive multiple step-by-step reasoning capabilities in recent natural language processing (NLP) reasoning tasks, many studies are interested in distilling reasoning abilities into smaller language models (SLMs) via fine-tuning.Previous distillation methods usually utilize the capabilities of LLMs to generate chain-of-thought (CoT) samples to teach SLMs.However, this distillation approach performs poorly in certain scenarios due to the limitations of CoT.In this work, we introduce a novel Mixed Distillation (MD) framework, distilling multiple step-by-step reasoning abilities into SLMs.First, we leverage LLMs to generate multiple step-by-step reasoning rationales by sampling automatically.Then, we create highquality, well-balanced mixed thought data and design a novel multi-task loss to help SLMs better learn and adaptively activate multiple stepby-step reasoning.Our extensive experiments demonstrate that MD enhances both single-path (using either CoT or PoT) and multi-path (using both CoT and PoT) reasoning abilities of SLMs during inference across reasoning tasks.Notably, a single model generated by MD exceeds the comprehensive performance of an ensemble of two individual CoT and PoT distilled models.Mistral-7B using MD can achieve remarkable improvements of 87.5%, 74.0% and 77.1% on SVAMP, GSM8K and ASDIV, respectively, outperforming the teacher model, GPT-3.5-Turbo.We hope our work provides insight into SLMs' multiple step-by-step reasoning abilities.
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Combining CoT and PoT improves the effectiveness of knowledge distillation from LLMs to SLMs on specific tasks.
“Both [93] and [23] explored mixed distillation, with [93] blending long and short CoT reasoning examples, while [23] combined CoT and PoT (Program of Thought) to improve the effectiveness of knowledge distillation from LLMs to SLMs on specific tasks.”
From Stop Overthinking: A Survey on Efficient Reasoning for Large Language Models (2025) · cites this paper as [23]
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Metadata
- Authors
- Chenglin, L., Chen, Q., Li, L., Wang, C., Tao, F., Li, Y., Chen, Z., & Zhang, Y.
- Affiliations
- Zhejiang University (CN)
- Alibaba Group (China) (CN)
- Dalian Medical University (CN)
- Venue
- Findings of the Association for Computational Linguistics: EMNLP 2024
- Published
- 2024
- Pages
- 1673-1690
- OpenAlex
- W4404783420
- Cited by
- 3
- References
- 0
- Citations by year
- 2026: 2 · 2025: 1
- FWCI
- 0.87
- Type
- conference paper
- Language
- en
- Open access
- hybrid
- dx.doi.org
- Licence
- cc-by
- Locations
- Findings of the Association for Computational Linguistics: EMNLP (Findings of EMNLP) (publishedVersion, cc-by)
- Funders
- National Natural Science Foundation of China (62072399)
- Ministry of Education, India
- Fundamental Research Funds for the Central Universities
- Natural Science Foundation of Zhejiang Province
- Topics
- Physical Sciences › Computer Science › Artificial Intelligence › Topic Modeling
- Physical Sciences › Computer Science › Artificial Intelligence › Natural Language Processing Techniques
- Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Multimodal Machine Learning Applications
- Keywords
- knowledge distillation, small language models, multi-step reasoning, chain-of-thought, multi-task loss, GSM8K
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