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Author(s): Fazeli, Soude; Rajabi, Enayat; Lezcano, Leonardo; Drachsler, Hendrik; Sloep, Peter
Title: Supporting users of open online courses with recommendations. An algorithmic study
In: Spector, J. Michael;Tsai, Chin-Chung; Sampson, Demetrios G;Kinshuk;Huang, Ronghuai;Chen, Nian-Shing;Resta, Paul (Hrsg.): IEEE 16th International Conference on Advanced Learning Technologies (ICALT 2016), 25-28 July 2016, Austin, Texas, Los Alamitos; CA: Conference Publishing Services, 2016 , S. 423-427
DOI: 10.1109/ICALT.2016.119
Publication Type: 4. Beiträge in Sammelwerken; Tagungsband/Konferenzbeitrag/Proceedings
Language: Englisch
Abstract: Almost all studies on course recommenders in online platforms target closed online platforms that belong to a University or other provider. Recently, a demand has developed that targets open platforms. Such platforms lack rich user profiles with content metadata. Instead they log user interactions. We report on how user interactions and activities tracked in open online learning platforms may generate recommendations. We use data from the OpenU open online learning platform in use by the Open University of the Netherlands to investigate the application of several state-of-the-art recommender algorithms, including a graph-based recommender approach. It appears that user-based and memory-based methods perform better than model-based and factorization methods. Particularly, the graph-based recommender system outperforms the classical approaches on prediction accuracy of recommendations in terms of recall. (Orig.)