GitHub Typo Corpus: A Large-Scale Multilingual Dataset of Misspellings and Grammatical Errors
Table 1: Percentage of spelling errors in GEC corpora
['Corpus', 'Misspellings (%)']
Spelling correction is itself an important sub-problem of grammatical error correction (GEC). In many GEC corpora, spelling errors account for approximately 10% of total errors , meaning that improving the accuracy of spelling correction can have a non-negligible impact on the performance of GEC.