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Service Rating Prediction by Exploring Social Mobile Users Geographical Locations

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Recently, advances in intelligent mobile device and positioning techniques have fundamentally enhanced social networks, which allows users to share their experiences, reviews, ratings, photos, check-ins, etc. The geographical information located by smart phone bridges the gap between physical and digital worlds. Location data functions as the connection between userâ??s physical behaviors and virtual social networks structured by the smart phone or web services. We refer to these social networks involving geographical information as location-based social networks (LBSNs). Such information brings opportunities and challenges for recommender systems to solve the cold start, sparsity problem of datasets and rating prediction. In this paper, we make full use of the mobile usersâ?? location sensitive characteristics to carry out rating predication. We mine: 1) the relevance between userâ??s ratings and user-item geographical location distances, called as user-item geographical connection, 2) the relevance between usersâ?? rating differences and user-user geographical location distances, called as user-user geographical connection. It is discovered that humansâ?? rating behaviors are affected by geographical location significantly. Moreover, three factors: user-item geographical connection, user-user geographical connection, and interpersonal interest similarity, are fused into a unified rating prediction model. We conduct a series of experiments on a real social rating network dataset Yelp. Experimental results demonstrate that the proposed approach outperforms existing models.

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Technology

JAVA
Description
Recently, advances in intelligent mobile device and positioning techniques have fundamentally enhanced social networks, which allows users to share their experiences, reviews, ratings, photos, check-ins, etc. The geographical information located by smart phone bridges the gap between physical and digital worlds. Location data functions as the connection between userâ??s physical behaviors and virtual social networks structured by the smart phone or web services. We refer to these social networks involving geographical information as location-based social networks (LBSNs). Such information brings opportunities and challenges for recommender systems to solve the cold start, sparsity problem of datasets and rating prediction. In this paper, we make full use of the mobile usersâ?? location sensitive characteristics to carry out rating predication. We mine: 1) the relevance between userâ??s ratings and user-item geographical location distances, called as user-item geographical connection, 2) the relevance between usersâ?? rating differences and user-user geographical location distances, called as user-user geographical connection. It is discovered that humansâ?? rating behaviors are affected by geographical location significantly. Moreover, three factors: user-item geographical connection, user-user geographical connection, and interpersonal interest similarity, are fused into a unified rating prediction model. We conduct a series of experiments on a real social rating network dataset Yelp. Experimental results demonstrate that the proposed approach outperforms existing models.
Description

http://ieeexplore.ieee.org/document/7458855/

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