Objects can be created by calls of the form new("rbfkernel"),
new{"polykernel"}, new{"tanhkernel"},
new{"vanillakernel"}, new{"anovakernel"},
new{"besselkernel"}, new{"laplacekernel"},
new{"splinekernel"}, new{"stringkernel"}or by calling the rbfdot, polydot, tanhdot,
vanilladot, anovadot, besseldot, laplacedot,
splinedot, stringdot functions etc..