A resource recommendation method based on user taste diffusion model in folksonomies

Authors:
Jiangning Wu;Yunfei Shi;Chonghui Guo
Affiliations:
Institute of Systems Engineering, Dalian University of Technology, China;Institute of Systems Engineering, Dalian University of Technology, China;Institute of Systems Engineering, Dalian University of Technology, China
Venue:
KSEM'11 Proceedings of the 5th international conference on Knowledge Science, Engineering and Management
Year:
2011

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Abstract

To deal with the tri-relation of user-resource-tag in folksonomies and the data sparsity problem in personalized recommendation, we propose a user taste diffusion model based on the tripartite hypergraph to recommend resources for users. Through the defined tri-relation model and diffusion probability matrix, the user's taste is diffused from itself to other users, resources and tags. When diffusion stops, the candidate resources can be identified then be ranked according to the taste values. As a result the top resources that have not been collected by the given user are selected as the final recommendations. Benefiting from the introduction of iterative diffusion mechanism, the recommendation results not only cover the resources collected by the given user's direct neighbors but also cover the ones which are collected by his/her extended neighbors. Experimental results show that our method performs better in terms of precision and recall than other recommendation methods.