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Changes between Version 2 and Version 3 of Ticket #2699, comment 10

v2	v3
3	3	* There should be an option to scale the input variables (scaling should be active by default) (DONE)
4	4	* RBF regression does not support noise. If there are duplicate x vectors, model building fails. An option would be to add a diagonal matrix to the gram matrix (leading to kernel ridge regression?) (DONE)
5		* I have not found a source for the calculation of variance and LOO error
	5	* I have not found a source for the calculation of variance and LOO error (DONE, removed LOO calculation)
6	6	* Don't know how to best unify covariance functions and kernel functions (there is some duplication) (DONE).
7	7	* The calculation of the covariance matrix takes a lot of time (10x longer than the equivalent calculation when using an equivalent covariance matrix). I suspect that the reason is the rather general implementation for distance calculation. (DONE)