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دسته بندی:
سیستم های توصیه گر - recommender systems
سال انتشار:
2019
عنوان انگلیسی مقاله:
A compositional model of multi-faceted trust for personalized item recommendation
ترجمه فارسی عنوان مقاله:
یک مدل ترکیبی از اعتماد چند جانبه برای توصیه کالای شخصی
منبع:
Sciencedirect - Elsevier - Expert Systems With Applications, 140 (2020) 112880: doi:10:1016/j:eswa:2019:112880
نویسنده:
Liliana Ardissono ∗, Noemi Mauro
چکیده انگلیسی:
Trust-based recommender systems improve rating prediction with respect to Collaborative Filtering by leveraging the additional information provided by a trust network among users to deal with the cold start problem. However, they are challenged by recent studies according to which people generally per- ceive the usage of data about social relations as a violation of their own privacy. In order to address this issue, we extend trust-based recommender systems with additional evidence about trust, based on public anonymous information, and we make them configurable with respect to the data that can be used in the given application domain: 1. We propose the Multi-faceted Trust Model (MTM) to define trust among users in a compositional way, possibly including or excluding the types of information it contains. MTM flexibly integrates social links with public anonymous feedback received by user profiles and user contributions in social networks. 2. We propose LOCABAL + , based on MTM, which extends the LOCABAL trust-based recommender system with multi-faceted trust and trust-based social regularization. Experiments carried out on two public datasets of item reviews show that, with a minor loss of user cov- erage, LOCABAL + outperforms state-of-the art trust-based recommender systems and Collaborative Filter- ing in accuracy, ranking of items and error minimization both when it uses complete information about trust and when it ignores social relations. The combination of MTM with LOCABAL + thus represents a promising alternative to state-of-the-art trust-based recommender systems.
Keywords: Multi-faceted trust | Trust-based recommender systems | Compositional trust model | Matrix factorization
قیمت: رایگان
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