Personal recommendation via modified collaborative filtering

Run-Ran Liu, Chun-Xiao Jia, Tao Zhou, Duo Sun and Bing-Hong Wang

Physica A: Statistical Mechanics and its Applications, 2009, vol. 388, issue 4, 462-468

Abstract: In this paper, we propose a novel method to compute the similarity between congeneric nodes in bipartite networks. Different from the standard cosine similarity, we take into account the influence of a node’s degree. Substituting this new definition of similarity for the standard cosine similarity, we propose a modified collaborative filtering (MCF). Based on a benchmark database, we demonstrate the great improvement of algorithmic accuracy for both user-based MCF and object-based MCF.

Keywords: Recommendation system; Bipartite network; Similarity; Collaborative filtering; Infophysics (search for similar items in EconPapers)
Date: 2009
References: View complete reference list from CitEc
Citations: View citations in EconPapers (6)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:388:y:2009:i:4:p:462-468

DOI: 10.1016/j.physa.2008.10.010

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