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This paper describes the collection and compilation of the OneStopEnglish corpus of texts written at three reading levels, and demonstrates its usefulness for through two applications -automatic readability assessment and automatic text simplification. The corpus consists of 189 texts, each in three versions (567 in total). The corpus is now freely available under a CC by-SA 4.0 license 1 and we hope that it would foster further research on the topics of readability assessment and text simplification.
Vajjala et al. (Mon,) studied this question.