Abstract
The paper focuses on the task of clustering essays produced by ESL (English as a Second Language) learners. The data was taken from a learner corpus REALEC. The division of texts by certain characteristics can be useful to speed up the analysis of a single corpus or access to the necessary sections of a large number of documents. The study discusses not only some existing approaches to clustering text data, as well as the possibility of clustering texts produced by ESL learners, but also ways to extract keywords in order to determine the topic of the essays in each group.
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