First-Step Advantage: Importance of Starting Right in Multi-Step Math Reasoning

• URL: http://arxiv.org/abs/2311.07945v3
• Date: Mon, 1 Jul 2024 13:25:57 GMT
• Title: First-Step Advantage: Importance of Starting Right in Multi-Step Math Reasoning
• Authors: Kushal Jain, Moritz Miller, Niket Tandon, Kumar Shridhar,
• Abstract summary: Language models can solve complex reasoning tasks better by learning to generate rationales for their predictions. We observe that smaller models in particular when corrected, can solve a task that they would have otherwise struggled with. We propose QuestCoT, where a smaller model first asks itself how to start, before proceeding with a chain of reasoning.
• Score: 11.75364271481855
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Language models can solve complex reasoning tasks better by learning to generate rationales for their predictions. Often these models know how to solve a task but their auto-regressive decoding nature leads to incorrect results if they start incorrectly. We observe that smaller models in particular when corrected, can solve a task that they would have otherwise struggled with. We demonstrate this phenomenon by using a larger model to guide smaller models, which leads to significantly improved performance (up to +24 points on the GSM8K dataset by 7B models). To assist smaller models in initiating the starting step, we propose QuestCoT, where a smaller model first asks itself how to start, before proceeding with a chain of reasoning. On various multistep mathematical reasoning datasets over multiple smaller models, we show that getting the right start can lead to significant performance gains across all models (gains of up to +6 points on GSM8K, +9 on SVAMP, +5 on ASDiv, and +7 on MultiArith).

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