4.7 Article

Utilizing user tag-based interests in recommender systems for social resource sharing websites

Journal

KNOWLEDGE-BASED SYSTEMS
Volume 56, Issue -, Pages 86-96

Publisher

ELSEVIER
DOI: 10.1016/j.knosys.2013.11.001

Keywords

Collaborative recommendation; Folksonomy; Social tagging; Tag; Social resource sharing; Personalization

Funding

  1. National Science Council of the Republic of China [NSC 98-2221-E-327-016-MY2]

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Recently collaborative tagging, also known as folksonomy in Web 2.0, allows users to collaboratively create and manage tags to classify and categorize dynamic content for searching and sharing. A user's interest in social resources usually changes with time in such a dynamic and information rich environment. Additionally, a social network is one innovative characteristic in social resource sharing websites. The information from a social network provides an inference of a certain user's interests based on the interests of this user's network neighbors. To handle the problem of personalized interests changing gradually with time, and to utilize the benefit of the social network, this study models a personalized user interest, incorporating frequency, recency, and duration of tag-based information, and performs collaborative recommendations using the user's social network in social resource sharing websites. The proposed method includes finding neighbors from the social friends network by using collaborative filtering and recommending similar resource items to the users by using content-based filtering. This study examines the proposed system's performance using an experimental dataset collected from a social bookmarking website. The experimental results show that the hybridization of user's preferences with frequency, recency, and duration plays an important role, and provides better performances than traditional collaborative recommendation systems. The experimental results also reveal that the friend network information can successfully collaborate, thus improving the collaborative recommendation process. (C) 2013 Elsevier B.V. All rights reserved.

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