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  title = {Judging CEFR Levels of English Learner's Essays Based on Error-type Identification and Text Quality Measures},
  booktitle = {},
  year = 2018,
}

@inproceedings{CTT100717366,
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  title = {誤り傾向と文の容認性に着目した英作文のレベル判定},
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  year = 2016,
}