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Recommender systems traditionally assume that user profiles and movie attributes are static. Temporal dynamics are purely reactive, that is, they are inferred after they are observed, e.g. after a user's taste has changed or based on hand-engineered temporal bias corrections for movies. We propose Recurrent Recommender Networks (RRN) that are able to predict future behavioral trajectories. This is achieved by endowing both users and movies with a Long Short-Term Memory (LSTM) autoregressive model that captures dynamics, in addition to a more traditional low-rank factorization. On multiple real-world datasets, our model offers excellent prediction accuracy and it is very compact, since we need not learn latent state but rather just the state transition function.
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Chao-Yuan Wu
National Central University
Amr Ahmed
University of Nebraska–Lincoln
Alex Beutel
Google (United States)
The University of Texas at Austin
Carnegie Mellon University
Google (United States)
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Wu et al. (Thu,) studied this question.
synapsesocial.com/papers/6a0cf819f8c14364690cea77 — DOI: https://doi.org/10.1145/3018661.3018689