Previous recommendation systems have focused on algorithms to make the recommendations based on the individual items. However, in many areas, the introduction about a cluster of the items based on the general characteristics of the item is more important than just focusing on the individual items. In this paper, we have proposed a new approach for the recommendation system, the proposed method uses the energy distance to group the items with similar properties or characteristics into a cluster, then based on the item clusters to give the most suitable recommendations for the users. In addition, the methods based on error (MAE_(c)) and accuracy (Precison_(c)-Recall_(c)) are also selected to evaluate the reliability of the new proposed model on two popular datasets Jester5k and MovieLens100k. Besides, the proposed model is also compared with two item-based collaborative filtering models using the Cosine and Pearson measures in “rrecsys” package and three item-based collaborative filtering models using the Matching, Euclidean and Karypis measures in “recommenderlab” package. The experimental results have shown that the proposed model is better than the compared models.
Tạp chí khoa học Trường Đại học Cần Thơ
Lầu 4, Nhà Điều Hành, Khu II, đường 3/2, P. Xuân Khánh, Q. Ninh Kiều, TP. Cần Thơ
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