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• W2891007919 startingPage "6856" @default.
• W2891007919 abstract "Tensor decompositions are fundamental tools for multiway data analysis. Existing approaches, however, ignore the valuable temporal information along with data, or simply discretize them into time steps so that important temporal patterns are easily missed. Moreover, most methods are limited to multilinear decomposition forms, and hence are unable to capture intricate, nonlinear relationships in data. To address these issues, we formulate event-tensors, to preserve the complete temporal information for multiway data, and propose a novel Bayesian nonparametric decomposition model. Our model can (1) fully exploit the time stamps to capture the critical, causal/triggering effects between the interaction events, (2) flexibly estimate the complex relationships between the entities in tensor modes, and (3) uncover hidden structures from their temporal interactions. For scalable inference, we develop a doubly stochastic variational Expectation-Maximization algorithm to conduct an online decomposition. Evaluations on both synthetic and real-world datasets show that our model not only improves upon the predictive performance of existing methods, but also discovers interesting clusters underlying the data." @default.
• W2891007919 created "2018-09-27" @default.
• W2891007919 creator A5024663093 @default.
• W2891007919 creator A5062358181 @default.
• W2891007919 date "2018-01-01" @default.
• W2891007919 modified "2023-09-24" @default.
• W2891007919 title "Stochastic Nonparametric Event-Tensor Decomposition" @default.
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• W2891007919 hasPublicationYear "2018" @default.
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