Theodora Alexopoulou
List of John Benjamins publications for which Theodora Alexopoulou plays a role.
2021 Subcategorization frame identification for learner English International Journal of Corpus Linguistics 26:2, pp. 187–218 | Article
As large-scale learner corpora become increasingly available, it is vital that natural language processing (NLP) technology is developed to provide rich linguistic annotations necessary for second language (L2) research. We present a system for automatically analyzing subcategorization frames… read more
2020 Machine learning for learner English: A plea for creating learner data challenges International Journal of Learner Corpus Research 6:1, pp. 72–103 | Article
This paper discusses machine learning techniques for the prediction of Common European Framework of Reference (CEFR) levels in a learner corpus. We summarise the CAp 2018 Machine Learning (ML) competition, a classification task of the six CEFR levels, which map linguistic competence in a foreign… read more
2018 Dependency parsing of learner English International Journal of Corpus Linguistics 23:1, pp. 28–54 | Article
Current syntactic annotation of large-scale learner corpora mainly resorts to “standard parsers” trained on native language data. Understanding how these parsers perform on learner data is important for downstream research and application related to learner language. This study evaluates the… read more
2015 Exploring big educational learner corpora for SLA research: Perspectives on relative clauses International Journal of Learner Corpus Research 1:1, pp. 96–129 | Article
We consider the opportunities presented by big educational learner corpora for Second Language Acquisition (SLA). In particular, we focus on the EF Cambridge Open Language Database (EFCAMDAT), an open access database of student writings submitted to Englishtown, the online school of EF Education… read more