create *public* kernel_function method to be overidden in directorkernel
create *public* kernel_function method to be overidden in directorkernel

shogun-toolbox/shogun,Saurabh7/shogun,sorig/shogun,karlnapf/shogun,karlnapf/shogun,karlnapf/shogun,geektoni/shogun,geektoni/shogun,shogun-toolbox/shogun,sorig/shogun,lambday/shogun,lisitsyn/shogun,sorig/shogun,Saurabh7/shogun,karlnapf/shogun,lambday/shogun,geektoni/shogun,lambday/shogun,lambday/shogun,lambday/shogun,shogun-toolbox/shogun,besser82/shogun,Saurabh7/shogun,Saurabh7/shogun,geektoni/shogun,shogun-toolbox/shogun,Saurabh7/shogun,Saurabh7/shogun,lisitsyn/shogun,besser82/shogun,sorig/shogun,Saurabh7/shogun,lambday/shogun,besser82/shogun,geektoni/shogun,besser82/shogun,karlnapf/shogun,shogun-toolbox/shogun,sorig/shogun,lisitsyn/shogun,sorig/shogun,geektoni/shogun,lisitsyn/shogun,shogun-toolbox/shogun,karlnapf/shogun,lisitsyn/shogun,besser82/shogun,besser82/shogun,Saurabh7/shogun,lisitsyn/shogun,Saurabh7/shogun