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General-Purpose Bayesian Tensor Learning With Automatic Rank Determination and Uncertainty Quantification

Journal Article · · Frontiers in Artificial Intelligence
 [1];  [1];  [1]
  1. University of California, Santa Barbara, CA (United States)
A major challenge in many machine learning tasks is that the model expressive power depends on model size. Low-rank tensor methods are an efficient tool for handling the curse of dimensionality in many large-scale machine learning models. The major challenges in training a tensor learning model include how to process the high-volume data, how to determine the tensor rank automatically, and how to estimate the uncertainty of the results. While existing tensor learning focuses on a specific task, this paper proposes a generic Bayesian framework that can be employed to solve a broad class of tensor learning problems such as tensor completion, tensor regression, and tensorized neural networks. We develop a low-rank tensor prior for automatic rank determination in nonlinear problems. Our method is implemented with both stochastic gradient Hamiltonian Monte Carlo (SGHMC) and Stein Variational Gradient Descent (SVGD). We compare the automatic rank determination and uncertainty quantification of these two solvers. We demonstrate that our proposed method can determine the tensor rank automatically and can quantify the uncertainty of the obtained results. We validate our framework on tensor completion tasks and tensorized neural network training tasks.
Research Organization:
University of California, Santa Barbara, CA (United States)
Sponsoring Organization:
National Science Foundation (NSF); USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR). Computational Science Research & Partnerships (CSRP)
Grant/Contract Number:
SC0021323
OSTI ID:
2953825
Journal Information:
Frontiers in Artificial Intelligence, Journal Name: Frontiers in Artificial Intelligence Vol. 4; ISSN 2624-8212
Publisher:
Frontiers Media SACopyright Statement
Country of Publication:
United States
Language:
English

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