demogp_matern

Purpose

Example to use an external covariance function.

Description

demogp_matern - script to exemplify the use of an external covariance function. The function chosen is the Matern covariance function which allows the transition from a rough (once- or twice-differentiable) kernel to the infinitely many times differentiable RBF kernel (implemented in this package as 'sqexp').

The demonstration starts from sampling from a realisation of a GP with zero mean and a matern covariance of order 1.5. This sample function is corrupted with additive Gaussian noise, then a GP with matern kernel - but different parameters - is trained on the samples.

In the demo script the experiments are repeated three times and different BV set sizes are also tested (to make it faster, change the parameters accordingly).

See Also

ogp, ogptrain, cov_matern, sincdata


Pages: Index

Copyright (c) Lehel Csató (2001-2004)