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Evaluation of grammatical error correction (GEC) systems has primarily focused on essays written by non-native learners of English, which however is only part of the full spectrum of GEC applications. We aim to broaden the target domain of…

Computation and Language · Computer Science 2020-10-16 Simon Flachs , Ophélie Lacroix , Helen Yannakoudakis , Marek Rei , Anders Søgaard

Currently available grammatical error correction (GEC) datasets are compiled using well-formed written text, limiting the applicability of these datasets to other domains such as informal writing and dialog. In this paper, we present a…

Computation and Language · Computer Science 2025-08-27 Xun Yuan , Derek Pham , Sam Davidson , Zhou Yu

A Grammatical Error Correction (GEC) system produces a sequence of edits to correct an erroneous sentence. The quality of these edits is typically evaluated against human annotations. However, a sentence may admit multiple valid…

Computation and Language · Computer Science 2026-05-06 Qiyuan Xiao , Xiaoman Wang , Yunshi Lan

We propose a neural encoder-decoder model with reinforcement learning (NRL) for grammatical error correction (GEC). Unlike conventional maximum likelihood estimation (MLE), the model directly optimizes towards an objective that considers a…

Computation and Language · Computer Science 2017-07-04 Keisuke Sakaguchi , Matt Post , Benjamin Van Durme

Grammatical Error Correction (GEC) aims to correct writing errors and help language learners improve their writing skills. However, existing GEC models tend to produce spurious corrections or fail to detect lots of errors. The quality…

Computation and Language · Computer Science 2021-05-11 Zhenghao Liu , Xiaoyuan Yi , Maosong Sun , Liner Yang , Tat-Seng Chua

We introduce gec-metrics, a library for using and developing grammatical error correction (GEC) evaluation metrics through a unified interface. Our library enables fair system comparisons by ensuring that everyone conducts evaluations using…

Computation and Language · Computer Science 2025-05-27 Takumi Goto , Yusuke Sakai , Taro Watanabe

Grammatical error correction (GEC) is a challenging task of natural language processing techniques. While more attempts are being made in this approach for universal languages like English or Chinese, relatively little work has been done…

Computation and Language · Computer Science 2023-03-31 Nankai Lin , Hongbin Zhang , Menglan Shen , Yu Wang , Shengyi Jiang , Aimin Yang

Grammatical error correction (GEC) is an important NLP task that is currently usually solved with autoregressive sequence-to-sequence models. However, approaches of this class are inherently slow due to one-by-one token generation, so…

Computation and Language · Computer Science 2023-11-15 Konstantin Yakovlev , Alexander Podolskiy , Andrey Bout , Sergey Nikolenko , Irina Piontkovskaya

Neural machine translation systems have become state-of-the-art approaches for Grammatical Error Correction (GEC) task. In this paper, we propose a copy-augmented architecture for the GEC task by copying the unchanged words from the source…

Computation and Language · Computer Science 2019-06-12 Wei Zhao , Liang Wang , Kewei Shen , Ruoyu Jia , Jingming Liu

Model ensemble has been in widespread use for Grammatical Error Correction (GEC), boosting model performance. We hypothesize that model ensemble based on the perplexity (PPL) computed by pre-trained language models (PLMs) should benefit the…

Computation and Language · Computer Science 2023-05-25 Chenming Tang , Xiuyu Wu , Yunfang Wu

Grammatical error correction (GEC) is the task of correcting typos, spelling, punctuation and grammatical issues in text. Approaching the problem as a sequence-to-sequence task, we compare the use of a common subword unit vocabulary and…

Grammatical Error Correction (GEC) relies on accurate error annotation and evaluation, yet existing frameworks, such as $\texttt{errant}$, face limitations when extended to typologically diverse languages. In this paper, we introduce a…

Computation and Language · Computer Science 2025-06-10 Mengyang Qiu , Tran Minh Nguyen , Zihao Huang , Zelong Li , Yang Gu , Qingyu Gao , Siliang Liu , Jungyeul Park

There has been an increased interest in data generation approaches to grammatical error correction (GEC) using pseudo data. However, these approaches suffer from several issues that make them inconvenient for real-world deployment including…

Computation and Language · Computer Science 2021-06-08 Masato Mita , Hitomi Yanaka

Previously, neural methods in grammatical error correction (GEC) did not reach state-of-the-art results compared to phrase-based statistical machine translation (SMT) baselines. We demonstrate parallels between neural GEC and low-resource…

Computation and Language · Computer Science 2018-04-18 Marcin Junczys-Dowmunt , Roman Grundkiewicz , Shubha Guha , Kenneth Heafield

Grammatical Error Correction (GEC) has been broadly applied in automatic correction and proofreading system recently. However, it is still immature in Chinese GEC due to limited high-quality data from native speakers in terms of category…

Computation and Language · Computer Science 2023-08-08 Lvxiaowei Xu , Jianwang Wu , Jiawei Peng , Jiayu Fu , Ming Cai

Grammatical error correction is a significant task in NLP. Traditional methods based on encoder-decoder models have achieved certain success, but the application of LLMs in this field is still underexplored. Current research predominantly…

Computation and Language · Computer Science 2025-08-27 Yilin Li , Xunjian Yin , Yilin Chen , Xiaojun Wan

We combine two of the most popular approaches to automated Grammatical Error Correction (GEC): GEC based on Statistical Machine Translation (SMT) and GEC based on Neural Machine Translation (NMT). The hybrid system achieves new…

Computation and Language · Computer Science 2018-04-18 Roman Grundkiewicz , Marcin Junczys-Dowmunt

Grammatical error correction (GEC) is the task of detecting and correcting grammatical errors in texts written by second language learners. The statistical machine translation (SMT) approach to GEC, in which sentences written by second…

Computation and Language · Computer Science 2016-06-02 Duc Tam Hoang , Shamil Chollampatt , Hwee Tou Ng

We extend a current sequence-tagging approach to Grammatical Error Correction (GEC) by introducing specialised tags for spelling correction and morphological inflection using the SymSpell and LemmInflect algorithms. Our approach improves…

Computation and Language · Computer Science 2023-02-14 Stuart Mesham , Christopher Bryant , Marek Rei , Zheng Yuan

We propose a novel language-independent approach to improve the efficiency for Grammatical Error Correction (GEC) by dividing the task into two subtasks: Erroneous Span Detection (ESD) and Erroneous Span Correction (ESC). ESD identifies…

Computation and Language · Computer Science 2020-10-08 Mengyun Chen , Tao Ge , Xingxing Zhang , Furu Wei , Ming Zhou