The EF-Cambridge Open Language Database (EFCAMDAT) is an electronic resource containing samples of written language production by thousands of adult learners of English as a second language, world-wide.
More information about EFCAMDAT is provided in
EFCAMDAT user manual
Please have a quick look at the EFCAMDAT user manual, which contains detailed instructions for your convinience.
Please cite the following papers:
Huang, Y., Murakami, A., Alexopoulou, T., & Korhonen, A. (2018). Dependency parsing of learner English. International Journal of Corpus Linguistics, 23(1), 28-54.
Geertzen, J. , Alexopoulou, T., & Korhonen, A. (2013). Automatic linguistic annotation of large scale L2 databases: The EF-Cambridge Open Language Database (EFCAMDAT). Selected Proceedings of the 31st Second Language Research Forum (SLRF), Cascadilla Press, MA.