GP-COV: Print covariance matrix for a Gaussian process at given points. GP-cov prints the covariance matrix for a Gaussian process at a given set of input points. Usage: gp-cov log-file index [ extra ] [ / train-inputs ] If no extra argument is given, the covariance matrix for latent values is used, without the noise variance being added to the diagonal. If the extra argument is the string "+noise", the noise is added. This is valid only for a regression model, and only if the noise variances do not vary on a case-by-case basis. If there is more than one target variable, the noise added is that for the first target. If the extra argument is a positive number, that number is added to the diagonal. By default, the covariance matrix is for the set of training inputs, as specified with data-spec, but this can be overrriden by specifying a file of training inputs at the end of the command line. This file must contain target values, even though they aren't used. The covariance matrix is written to standard output, to 18 digit precision, one row per line. The full matrix is written even though it is symmetrical. Copyright (c) 1997 by Radford M. Neal