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- W2486163552 abstract "Recommender systems have become an important area of research with numerous applications on e-commerce. This chapter introduces a joint statistical model for user preferences and item features that can serve as the basis for a recommendation about recently published scientific papers. The model is constructed using ideas from the literature on Bayesian nonparametric mixture modeling. More specifically, user preferences are modeled using an Infinite Relational Model (IRM) in which both users and items are independently partitioned into homogeneous groups, while item features are modeled using a topic model, which also partitions items into groups with homogenous features. Information is shared across both components of the model through a common partition of items. Hence, the model is a hybrid system that combines ideas from collaborative and content-based filtering. The chapter discusses three different computational strategies, including a Markov chain Monte Carlo algorithm for full posterior inference, an iterated conditional maximization algorithm, and a mean-field variational algorithm for point estimation and prediction in large datasets where Markov chain Monte Carlo approaches might not be practical. The model is illustrated through simulation studies and by analyzing data from CiteULike." @default.
- W2486163552 created "2016-08-23" @default.
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- W2486163552 date "2014-01-01" @default.
- W2486163552 modified "2023-10-16" @default.
- W2486163552 title "A Recommendation System for Scientific Papers through Bayesian Nonparametric Hybrid Filtering" @default.
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- W2486163552 doi "https://doi.org/10.4018/978-1-4666-5063-3.ch002" @default.
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