As a whole, a Support Vector Machine is a maximal margin hyperplane
in feature space built by using a kernel function in spectral
space. The selection of SVM kernel classifier (along with kernel parameters)
is considered as one of the most important steps in the implementation
of SVM classifier. The lower the number of parameters to
be defined, the higher the robustness of the SVM implementation will
be. Moreover, the selection of the proper kernel functions or proper
parameters of a kernel function is extremely time consuming.