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- W2793399158 abstract "One of the most compelling features of Gaussian process (GP) regression is its ability to provide well-calibrated posterior distributions. Recent advances in inducing point methods have sped up GP marginal likelihood and posterior mean computations, leaving posterior covariance estimation and sampling as the remaining computational bottlenecks. In this paper we address these shortcomings by using the Lanczos algorithm to rapidly approximate the predictive covariance matrix. Our approach, which we refer to as LOVE (LanczOs Variance Estimates), substantially improves time and space complexity. In our experiments, LOVE computes covariances up to 2,000 times faster and draws samples 18,000 times faster than existing methods, all without sacrificing accuracy." @default.
- W2793399158 created "2018-03-29" @default.
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- W2793399158 date "2018-03-16" @default.
- W2793399158 modified "2023-09-27" @default.
- W2793399158 title "Constant-Time Predictive Distributions for Gaussian Processes" @default.
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