Using Shallow Syntactic Features to Measure Influences of L1 and Proficiency Level in EFL Writings Andrea Horbach author Jonathan Poitz author Alexis Palmer author 2015-05 text Proceedings of the fourth workshop on NLP for computer-assisted language learning Elena Volodina editor Lars Borin editor Ildikó Pilán editor LiU Electronic Press Vilnius, Lithuania conference publication horbach-etal-2015-using https://aclanthology.org/W15-1903/ 2015-05 21 34