Information filtering based on corrected redundancy-eliminating mass diffusion

Xuzhen Zhu, Yujie Yang, Guilin Chen, Matus Medo, Hui Tian, Shi-Min Cai, Jian-Guo Liu
2017 PLoS ONE  
Methods used in information filtering and recommendation often rely on quantifying the similarity between objects or users. The used similarity metrics often suffer from similarity redundancies arising from correlations between objects' attributes. Based on an unweighted undirected object-user bipartite network, we propose a Corrected Redundancy-Eliminating similarity index (CRE) which is based on a spreading process on the network. Extensive experiments on three benchmark data sets-Movilens,
more » ... tflix and Amazon-show that when used in recommendation, the CRE yields significant improvements in terms of recommendation accuracy and diversity. A detailed analysis is presented to unveil the origins of the observed differences between the CRE and mainstream similarity indices.
doi:10.1371/journal.pone.0181402 pmid:28749976 pmcid:PMC5531469 fatcat:3denziffcfaafabrtmaqts2j2e