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Building e-rater Scoring Models Using Machine Learning Methods AES MLR

Author(s):
Chen, Jing; Fife, James H.; Bejar, Isaac I.; Rupp, André A.
Publication Year:
2016
Report Number:
RR-16-04
Source:
ETS Research Report
Document Type:
Report
Page Count:
14
Subject/Key Words:
Machine Learning, Automated Essay Scoring (AES), Linear Regression, Statistical Modeling, e-rater, Algorithms, Human Computer Agreement

Abstract

Furthermore, compared with MLR, SVM-based models improved the agreement between human and e-rater scores at the ends of the score scale. In addition, the high correlation between SVM-based e-rater scores with external measures such as examinee's scores on the other parts of the test provided some validity evidence for SVM-based e-rater scores. Future research is encouraged to explore the generalizability of these findings.

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