A Modified PMF Model Incorporating Implicit Item Associations

作者: Qiang Liu , Chengwei Wang , Congfu Xu

DOI: 10.1109/ICTAI.2012.146

关键词: Factor analysisCollaborative filteringMachine learningRecommender systemArtificial intelligenceData miningComputer scienceProbabilistic logicRegularization (mathematics)Matrix decompositionContext model

摘要: As a state-of-the-art recommendation technique, collaborative filtering (CF) methods compute recommendations by leveraging historical data set of users' ratings for items. So far, the best performing CF are latent factor models. Probabilistic matrix factorization (PMF) model, as widely used offers probabilistic foundation regularization. In this paper, we present novel method incorporating implicit relationship between items into basic PMF model. Firstly mine correlation based on model utilizing contextual information, and then generalize obtained item We validate our approach two datasets, experimental results show that proposed outperforms several existing

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