Splines with non positive kernels (2006)
Non parametric regressions methods can be presented in two main clusters. The one of smoothing splines methods requiring positive kernels and the other one known as Nonparametric Kernel Regression...
Learning with Non-Positive Kernels (2004)
Ong, C.S., Mary, X., Canu, S., Smola, A.
In this paper we show that many kernel methods can be adapted to deal with indefinite kernels, that is, kernels which are not positive semidefinite. They do not satisfy Mercer’s condition and they...