Recommendation System Algorithms on Location-Based Social Networks: Comparative Study

被引:9
作者
Al-Nafjan, Abeer [1 ]
Alrashoudi, Norah [2 ]
Alrasheed, Hend [2 ]
机构
[1] Imam Muhammad Bin Saud Univ, Coll Comp & Informat Sci, Dept Comp Sci, Riyadh 11432, Saudi Arabia
[2] King Saud Univ, Coll Comp & Informat Sci, Dept Informat Technol, Riyadh 11451, Saudi Arabia
关键词
recommendation system; location-based social networks (LBSNs); matrix factorization (MF); points of interest (POIs); SINGULAR-VALUE DECOMPOSITION; MATRIX FACTORIZATION; MODEL;
D O I
10.3390/info13040188
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
Currently, social networks allow individuals from all over the world to share ideas, activities, events, and interests over the Internet. Using location-based social networks (LBSNs), users can share their locations and location-related content, including images and reviews. Location rec-14 recommendation system-based LBSN has gained considerable attention in research using techniques and methods based on users' geosocial activities. In this study, we present a comparative analysis of three matrix factorization (MF) algorithms, namely, singular value decomposition (SVD), singular value decomposition plus (SVD++), and nonnegative matrix factorization (NMF). The primary task of the implemented recommender system was to predict restaurant ratings for each user and make a recommendation based on this prediction. This experiment used two performance metrics for evaluation, namely, root mean square error (RMSE) and mean absolute error (MAE). The RMSEs confirmed the efficacy of SVD with a lower error rate, whereas SVD++ had a lower error rate in terms of MAE.
引用
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页数:12
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