@InProceedings{settles-EtAl:2018:W18-05,
  author    = {Settles, Burr  and  Brust, Chris  and  Gustafson, Erin  and  Hagiwara, Masato  and  Madnani, Nitin},
  title     = {Second Language Acquisition Modeling},
  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     = {56--65},
  abstract  = {We present the task of {\em second language acquisition (SLA) modeling}. Given a history of errors made by learners of a second language, the task is to predict errors that they are likely to make at arbitrary points in the future. We describe a large corpus of more than 7M words produced by more than 6k learners of English, Spanish, and French using Duolingo, a popular online language-learning app. Then we report on the results of a shared task challenge aimed studying the SLA task via this corpus, which attracted 15 teams and synthesized work from various fields including cognitive science, linguistics, and machine learning.},
  url       = {http://www.aclweb.org/anthology/W18-0506}
}