ACKNOWLEDGEMENTS Inspiration for implementing the Gaussian process methods came from the work of Carl Rasmussen and Chris Williams. I also benefited from looking at Carl Rasmussen's implementation. The sampling method for top-level hyperparameters using adaptive rejection sampling, and the features allowing cpu time to be stored, displayed, and used to control the number of iterations, are also based on work by Carl Edward Rasmussen. Thanks also to Tim Howells, Dirk Husmeier, Marcus Lee, David MacKay, Neil Montgomery, Tony Plate, Jeff Rosenthal, Ricard Ferran Sans, and Chris Williams for comments on the documentation, for testing the programs, and for finding bugs.