EM Algorithm for Cleaning of Answers Generated by an E-learning System
نویسندگان
چکیده
For E-learning such as web based teaching (WBT), in order to reduce the cost of making questions, a computer system that generates questions and answers is desirable. However, such a system does not always generate them correctly. As a result, human instructors have to check the generated questions and remove the errors. In this paper, we propose a technique for removing errors in the generated questions. The technique uses EM algorithm in order to estimate the generated accuracy (probability of correct answer) of each question. In the experiment using our E-learning system which generates grammatical questions from English corpus, we can remove errors in the questions.
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