A probabilistic Taylor expansion with Gaussian processes

Toni Karvonen; Jon Cockayne; Filip Tronarp; Simo Särkkä

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arXiv · 2102.00877

A probabilistic Taylor expansion with Gaussian processes

Toni Karvonen·Jon Cockayne·Filip Tronarp·Simo Särkkä

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Abstract

We study a class of Gaussian processes for which the posterior mean, for a particular choice of data, replicates a truncated Taylor expansion of any order. The data consist of derivative evaluations at the expansion point and the prior covariance kernel belongs to the class of Taylor kernels, which can be written in a certain power series form. We discuss and prove some results on maximum likelihood estimation of parameters of Taylor kernels. The proposed framework is a special case of Gaussian process regression based on data that is orthogonal in the reproducing kernel Hilbert space of the covariance kernel.

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Toni Karvonen, Jon Cockayne, Filip Tronarp, Simo Särkkä. 2021-02-01. A probabilistic Taylor expansion with Gaussian processes. https://arxiv.org/abs/2102.00877

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