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- W2896622503 abstract "We consider the problem of online collaborative filtering in the online setting, where items are recommended to the users over time. At each time step, the user (selected by the environment) consumes an item (selected by the agent) and provides a rating of the selected item. In this paper, we propose a novel algorithm for online matrix factorization recommendation that combines linear bandits and alternating least squares. In this formulation, the bandit feedback is equal to the difference between the ratings of the best and selected items. We evaluate the performance of the proposed algorithm over time using both cumulative regret and average cumulative NDCG. Simulation results over three synthetic datasets as well as three real-world datasets for online collaborative filtering indicate the superior performance of the proposed algorithm over two state-of-the-art online algorithms." @default.
- W2896622503 created "2018-10-26" @default.
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- W2896622503 creator A5054929782 @default.
- W2896622503 date "2018-10-22" @default.
- W2896622503 modified "2023-09-27" @default.
- W2896622503 title "Alternating Linear Bandits for Online Matrix-Factorization Recommendation." @default.
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