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Experimental Evaluation of Similarity Measures for Educational Items

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ČECHÁK Jaroslav PELÁNEK Radek

Rok publikování 2021
Druh Článek ve sborníku
Fakulta / Pracoviště MU

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Citace
www https://educationaldatamining.org/EDM2021/EDM2021Proceedings.pdf
Klíčová slova item similarity; evaluation; generalizability
Popis Measuring similarity of educational items has several applications in the development of adaptive learning systems, and previous research has already proposed a wide range of similarity measures. In this work, we provide an experimental evaluation of selected similarity measures using a large dataset. The used items are alternate-choice questions for the practice of English grammar for second language learners; the dataset contains thousands of items and over 10 million student answers. Our results provide warnings about the generalizability of results presented in EDM works: 1) the results vary significantly between knowledge components and 2) the size of available data is an important factor.
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