Title:
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Semantically-enhanced pre-filtering for context-aware recommender systems
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Author:
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Codina Busquet, Víctor; Ceccaroni, Luigi
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Other authors:
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Universitat Politècnica de Catalunya. Departament de Llenguatges i Sistemes Informàtics; Universitat Politècnica de Catalunya. KEMLG - Grup d'Enginyeria del Coneixement i Aprenentatge Automàtic |
Abstract:
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Several research works have demonstrated that if users' ratings are truly context-dependent, then Context-Aware Recommender Systems can outperform traditional recommenders. In this paper we present a novel contextual pre-filtering approach that exploits the implicit semantic similarity of contextual situations. For determining such a similarity we rely only on the available users' ratings and we deem as similar two syntactically different contextual situations that are actually influencing in a similar way the user's rating behavior. We validate the proposed approach using two contextually tagged ratings data sets showing that it outperforms a traditional pre-filtering approach and a state-of-the-art context-aware Matrix Factorization model. |
Abstract:
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Peer Reviewed |
Subject(s):
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-Àrees temàtiques de la UPC::Informàtica::Sistemes d'informació -Recommender systems (Information filtering) -Recommender systems -Behavioral research -Collaborative filtering -Sistemes experts (Informàtica) -- Filtratge |
Rights:
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Document type:
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Article - Published version Conference Object |
Published by:
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ACM Press. Association for Computing Machinery
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