Yukio Tono
Linguistic feature extraction and evaluation using machine learning to identify “criterial” grammar constructions for the CEFR levels
L2 learner profile
English Profile – CEFR for Englsih
Criterial features: Hawkins & Filipovic 2012
CEFR-J RLD Project: aim prepare list of vocabulary and grammar item to be taught and assessed at each CEFR level
CEFR Coursebook Corpus
Weka format 3.6.12
158 features
Attribute selection