Supporting the development of synchronous text-based computer-mediated communication with an intelligent diagnosis tool |
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Affiliation: | 1. Department of Computer Science and Information Engineering, National Dong Hwa University, Taiwan;2. Department of Electrical Engineering, National Dong Hwa University, Taiwan;1. Department of Mathematics, Kohat University of Science & Technology, Kohat 26000, Khyber Pukhtunkhwa, Pakistan;2. Department of Mathematical Sciences, University of Essex, Wivenhoe Park, CO4 3SQ Colchester, UK;1. Department of Industrial Engineering, Erciyes University, Kayseri, Turkey;2. Department of Industrial Engineering, Dokuz Eylul University, Izmir, Turkey;1. Department of Mathematics, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India;2. Department of Mathematics, Ch. Charan Singh University, Meerut 250004, Uttar Pradesh, India;1. Technical University of Cluj-Napoca, Romania;2. Babes-Bolyai University of Cluj-Napoca, Romania;3. Université Nice Sophia-Antipolis, France;1. School of Electronic and Information Engineering, Beihang University, Beijing 100191, PR China;2. Department of Computer Science, University of Kentucky, Lexington, KY 40506-0495, USA |
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Abstract: | To date, a look at the scientific literature on the construction and use of synchronous computer-mediated communication (CMC) support environments reveals that most researchers have focused either on exchanging information or on constructing and presenting posts. In this work, an intelligent collaborative synchronous CMC platform that detects whether the learners address the expected discussion issues is proposed. The concept maps related to the learning topics are first outlined by the instructor. After each learner issues a post on the synchronous CMC platform, a feature selection approach is adopted to derive the input parameters of a one-class Support Vector Machines (SVMs) classifier. The classifier then determines if the learners’ posts are related to the concept maps previously outlined by the instructor. Meanwhile, learner peers from the same group are asked to provide comments on the synchronous CMCs, and a group grading module is established in this work to evaluate the quality of the synchronous CMCs. If the evaluation results from the classifier and the group grading module are inconsistent, the instructor or the teaching assistant is consulted to verify the evaluation results. Notably, a feedback rule construction mechanism is used to issue feedback messages to learners in cases where the synchronous CMC support system detects that the learners have strayed astray from the expected learning topics in their posts. The classification rates for the one-class SVM classifier can reach up to 97.06%, and the average pre-test and post-test grades were 51.94 and 66.77, respectively, which revealed that the junior high school students participating in synchronous CMC activities related to natural science were benefited by the proposed intelligent synchronous CMC platform. |
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Keywords: | Cooperative/collaborative learning Intelligent tutoring systems Support Vector Machines Computer-mediated communication |
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