MIT Press

Table 5:

Error rates in various learner corpora. The CoNLL and JFLEG have two and four reference annotations, respectively. Numbers shown for each.

Corpus	Error rate (%)
Russian (RULEC-GEC)	6.3
English (FCE)	17.7
English (CoNLL-test)	10.8–13.6
English (CoNLL-train)	6.6
English (JFLEG)	18.5–25.5
Arabic	28.7

Corpus	Error rate (%)
Russian (RULEC-GEC)	6.3
English (FCE)	17.7
English (CoNLL-test)	10.8–13.6
English (CoNLL-train)	6.6
English (JFLEG)	18.5–25.5
Arabic	28.7