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• W2963181929 abstract "Recommender systems have been widely adopted by electronic commerce and entertainment industries for individualized prediction and recommendation, which benefit consumers and improve business intelligence. In this article, we propose an innovative method, namely the recommendation engine of multilayers (REM), for tensor recommender systems. The proposed method utilizes the structure of a tensor response to integrate information from multiple modes, and creates an additional layer of nested latent factors to accommodate between-subjects dependency. One major advantage is that the proposed method is able to address the “cold-start” issue in the absence of information from new customers, new products or new contexts. Specifically, it provides more effective recommendations through sub-group information. To achieve scalable computation, we develop a new algorithm for the proposed method, which incorporates a maximum block improvement strategy into the cyclic blockwise-coordinate-descent algorithm. In theory, we investigate algorithmic properties for convergence from an arbitrary initial point and local convergence, along with the asymptotic consistency of estimated parameters. Finally, the proposed method is applied in simulations and IRI marketing data with 116 million observations of product sales. Numerical studies demonstrate that the proposed method outperforms existing competitors in the literature." @default.
• W2963181929 created "2019-07-30" @default.
• W2963181929 creator A5029794342 @default.
• W2963181929 creator A5070768111 @default.
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• W2963181929 date "2018-12-02" @default.
• W2963181929 modified "2023-10-16" @default.
• W2963181929 title "Multilayer tensor factorization with applications to recommender systems" @default.
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• W2963181929 doi "https://doi.org/10.1214/17-aos1659" @default.
• W2963181929 hasPublicationYear "2018" @default.
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