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arXiv · 2605.13624

Edit-level Majority Voting Mitigates Over-Correction in LLM-based Grammatical Error Correction

Takumi Goto·Yusuke Sakai·Taro Watanabe
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Abstract

Grammatical error correction using large language models often suffers from the over-correction issue. To mitigate this, we propose a training-free inference method that performs edit-level majority voting over multiple candidates generated by a single model, without requiring model modifications or additional training. Across nine benchmarks covering English, Czech, German, Ukrainian, Korean, Hindi, and Romanian, the proposed method outperforms both greedy and MBR decoding in most cases. Moreover, it yields stable correction quality regardless of the instruction prompts used. We release two repository supporting GEC datasets loading and LLM inference.

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Takumi Goto, Yusuke Sakai, Taro Watanabe. 2026-05-13. Edit-level Majority Voting Mitigates Over-Correction in LLM-based Grammatical Error Correction. https://arxiv.org/abs/2605.13624

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