Automatic annotation method on learners’ opinions in case method discussion

Masaki Samejima (Graduate School of Information Science and Technology, Osaka University, Osaka, Japan)
Daichi Hisakane (Graduate School of Information Science and Technology, Osaka University, Osaka, Japan)
Norihisa Komoda (Graduate School of Information Science and Technology, Osaka University, Osaka, Japan)

Interactive Technology and Smart Education

ISSN: 1741-5659

Publication date: 15 June 2015

Abstract

Purpose

The purpose of this paper is to annotate an attribute of a problem, a solution or no annotation on learners’ opinions automatically for supporting the learners’ discussion without a facilitator. The case method aims at discussing problems and solutions in a target case. However, the learners miss discussing some of problems and solutions.

Design/methodology/approach

Because opinions about problems and solutions on the same case are similar to each other, the proposed method uses opinions that are correctly annotated in past discussions for annotating an appropriate attribute on each opinion in discussions of the same case. The annotation on each opinion is identified by Support Vector Machine learned with opinions and annotations in the past discussion.

Findings

Compared to a simple method that uses decision tree classification, this proposed method improves the recall rate and the precision rate of annotating the attribute by over 10 per cent. The proposed method is effective for automatic annotation.

Originality/value

Because the recall rate and the precision rate of annotating an attribute of a problem are over 80 per cent, it is possible to make learners aware of problems that they should discuss. On the other hand, the recall rate and the precision rate of annotating an attribute of a solution are still low. The authors discuss the research issue to improve the rates for automatic annotation.

Keywords

Citation

Samejima, M., Hisakane, D. and Komoda, N. (2015), "Automatic annotation method on learners’ opinions in case method discussion", Interactive Technology and Smart Education, Vol. 12 No. 2, pp. 90-99. https://doi.org/10.1108/ITSE-04-2015-0003

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Publisher

:

Emerald Group Publishing Limited

Copyright © 2015, Emerald Group Publishing Limited

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