Less is More: Enhancing Structured Multi-Agent Reasoning via Quality-Guided Distillation

• URL: http://arxiv.org/abs/2504.16408v1
• Date: Wed, 23 Apr 2025 04:19:52 GMT
• Title: Less is More: Enhancing Structured Multi-Agent Reasoning via Quality-Guided Distillation
• Authors: Jiahao Yuan, Xingzhe Sun, Xing Yu, Jingwen Wang, Dehui Du, Zhiqing Cui, Zixiang Di,
• Abstract summary: We present Less is More, the third-place winning approach in the XLLM@ACL2025 Shared Task-III.<n>Our approach focuses on structured reasoning from only 24 labeled examples.<n>All modules are fine-tuned from Meta-Llama-3-8B-Instruct under a unified LoRA+ setup.
• Score: 6.920352059545929
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The XLLM@ACL2025 Shared Task-III formulates a low-resource structural reasoning task that challenges LLMs to generate interpretable, step-by-step rationales with minimal labeled data. We present Less is More, the third-place winning approach in the XLLM@ACL2025 Shared Task-III, which focuses on structured reasoning from only 24 labeled examples. Our approach leverages a multi-agent framework with reverse-prompt induction, retrieval-augmented reasoning synthesis via GPT-4o, and dual-stage reward-guided filtering to distill high-quality supervision across three subtasks: question parsing, CoT parsing, and step-level verification. All modules are fine-tuned from Meta-Llama-3-8B-Instruct under a unified LoRA+ setup. By combining structure validation with reward filtering across few-shot and zero-shot prompts, our pipeline consistently improves structure reasoning quality. These results underscore the value of controllable data distillation in enhancing structured inference under low-resource constraints. Our code is available at https://github.com/Jiahao-Yuan/Less-is-More.

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