Vocabulary Data of 16 English as a Second Language learners.

Every learner is asked to answer 11,999 English words and 1 pseudo word.

Participants were collected to create this dataset in  January, 2009.  1 Learner is unpaid, and 15 learners are paid.

Most of the participants were Japanese native speaker. Most of the participants were the students of the University of Tokyo.

Usage, Terms of Use, and Details are written in the readme.txt in the zip file.

Especially, please remind the following:

As written in the readme.txt, this dataset is for research purpose only and please do not redistribute this dataset.
And please cite the following two papers to use this dataset:

author = {Ehara, Yo and Shimizu, Nobuyuki and Ninomiya, Takashi and
Nakagawa, Hiroshi},
title = {Personalized reading support for second-language web documents},
journal = {ACM Transactions of Intelligent Systems and Technology},
issue_date = {March 2013},
volume = {4},
number = {2},
month = apr,
year = {2013},
issn = {2157-6904},
pages = {31:1–31:19},
articleno = {31},
numpages = {19},
url = {http://doi.acm.org/http://dx.doi.org/10.1145/2438653.2438666},
doi = {http://dx.doi.org/10.1145/2438653.2438666},
acmid = {2438666},
publisher = {ACM},
address = {New York, NY, USA},
keywords = {Reading support, Web pages, glossing systems, item
response theory, logistic regression},

author    = {Ehara, Yo  and  Sato, Issei  and  Oiwa, Hidekazu  and
Nakagawa, Hiroshi},
title     = {Mining Words in the Minds of Second Language Learners:
Learner-Specific Word Difficulty},
booktitle = {Proceedings of COLING 2012},
month     = {December},
year      = {2012},
address   = {Mumbai, India},
publisher = {The COLING 2012 Organizing Committee},
pages     = {799–814},
url       = {http://www.aclweb.org/anthology/C12-1049}

For further details about this dataset,  please contact me (y-ehara atmark aist.go.jp).


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