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一种基于多元社交信任的协同过滤推荐算法.pdf

一种基于多元社交信任的协同过滤推荐算法.pdf

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一种基于多元社交信任的协同过滤推荐算法

DOI:10 .7544/issn1000‐1239 .2016 Journalof Computer Research andDevelopment 53(6):1389 1399 ,2016 1 1 2 1       1 (    313000) 2 (    310018) (angelwrq@ 163 .com) 1 1 2 1 Wang Ruiqin ,Jiang Yunliang ,Li Yixiao ,and LouJungang 1 ( , , , 313000 ) 2 ( , , 310018)   Collaborativefiltering (CF) is one of the most successful recommendation technologies in thepersonalized recommendation systems.It can recommend products or information for target user according to thepreferenceinformationof similar users .However thetraditionalcollaborativefiltering algorithms have the disadvantages of low recommendation efficiency and weak capacity of attack‐ resistance.In order to solve the above problems, a novel collaborative filtering algorithm based on social trustsis proposed. Firstly , referring to the trust generation principle in social psychology , a social trust computation method based on multiple trust elements is presented .In social networking environment, trust elements mainly include credibility , reliability, intimacy and self‐orientation. Then specificmethodsof identifying ,extractionandquantificationof thetrust elementsare studiedin depth.Finally , the trustworthy neighbors of target user are selected in accordance with the social trust,so as to make trust‐basedcollaborative recommendation .Using the FilmTrust and Epinions as test data sets,the performanceof thenovelalgorithm iscomparedwith that of thetraditional CF and the‐state‐of‐art methods,aswell as the CF basedon single trust element .Experimental results show that comparedwith theother m

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