期刊
EXPERT SYSTEMS WITH APPLICATIONS
卷 36, 期 6, 页码 9839-9846出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.eswa.2009.02.005
关键词
Similarity functions; Students' answerscripts; Interval-valued fuzzy grade sheets; Interval-valued fuzzy sets; Index of optimism
类别
资金
- National Science Council, Republic of China [NSC 95-2213-E-011-116-MY2]
In this paper, we propose two new methods for evaluating Students' answerscripts based oil interval-valued fuzzy grade sheets. The marks awarded to the answers in the students' answerscripts are represented by interval-valued fuzzy sets. Each element in the universe of discourse belonging to all interval-valued fuzzy set is represented by an interval between zero and one. The degree of similarity between an interval-valued fuzzy mark and a standard interval-valued fuzzy set is calculated by a similarity function. An index of optimism lambda determined by the evaluator is used to indicate the degree of optimism of the evaluator, where lambda is an element of [0, 1]. The experimental results show that the proposed methods are more stable than Biswas's method for Students' answerscripts evaluation. They call evaluate Students' answerscripts in a more flexible and more intelligent manner. (C) 2009 Elsevier Ltd. All rights reserved,
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