Self-Correction Distillation for Structured Data Question Answering

• URL: http://arxiv.org/abs/2511.07998v2
• Date: Mon, 17 Nov 2025 06:08:41 GMT
• Title: Self-Correction Distillation for Structured Data Question Answering
• Authors: Yushan Zhu, Wen Zhang, Long Jin, Mengshu Sun, Ling Zhong, Zhiqiang Liu, Juan Li, Lei Liang, Chong Long, Chao Deng, Junlan Feng,
• Abstract summary: Small-scale language models (LLMs) are prone to errors in generating structured queries.<n>We propose a self-correction distillation (SCD) method to improve the structured data QA ability of small-scale LLMs.
• Score: 50.98882432829651
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Structured data question answering (QA), including table QA, Knowledge Graph (KG) QA, and temporal KG QA, is a pivotal research area. Advances in large language models (LLMs) have driven significant progress in unified structural QA frameworks like TrustUQA. However, these frameworks face challenges when applied to small-scale LLMs since small-scale LLMs are prone to errors in generating structured queries. To improve the structured data QA ability of small-scale LLMs, we propose a self-correction distillation (SCD) method. In SCD, an error prompt mechanism (EPM) is designed to detect errors and provide customized error messages during inference, and a two-stage distillation strategy is designed to transfer large-scale LLMs' query-generation and error-correction capabilities to small-scale LLM. Experiments across 5 benchmarks with 3 structured data types demonstrate that our SCD achieves the best performance and superior generalization on small-scale LLM (8B) compared to other distillation methods, and closely approaches the performance of GPT4 on some datasets. Furthermore, large-scale LLMs equipped with EPM surpass the state-of-the-art results on most datasets.

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