@InProceedings{klerke-martnezalonso-plank:2018:W18-05,
  author    = {Klerke, Sigrid  and  Martínez Alonso, Héctor  and  Plank, Barbara},
  title     = {Grotoco$@$SLAM: Second Language Acquisition Modeling with Simple Features, Learners and Task-wise Models},
  booktitle = {Proceedings of the Thirteenth Workshop on Innovative Use of NLP for Building Educational Applications},
  month     = {June},
  year      = {2018},
  address   = {New Orleans, Louisiana},
  publisher = {Association for Computational Linguistics},
  pages     = {206--211},
  abstract  = {We present our submission to the 2018 Duolingo Shared Task on Second Language Acquisition Modeling (SLAM). We focus on evaluating a range of features for the task, including user-derived measures, while examining how far we can get with a simple linear classifier. Our analysis reveals that errors differ per exercise format, which motivates our final and best-performing system: a task-wise (per exercise-format) model.},
  url       = {http://www.aclweb.org/anthology/W18-0523}
}