svmkernel.m

来自「Graphical User Interface, matlab图形界面程序值得」· M 代码 · 共 23 行

% D2CMatlab function: 
% Function to compute kernel type and return the kernel value
% Returns kernel value for two vectors 
% Written by D. Lai 2006
%
% Add kernel definitions as required.

function [value] SVMkernel=(handles, X1 , X2)

switch handles.ktype
case 0
    value=X1*X2';
case 1
    value=(handles.p*X1*X2'+handles.q)^handles.d;
case 2
    if(handles.sigma>0)
        handles.sigma=handles.sigma*-1;
    end
    value=exp(handles.sigma*norm(X1-X2)^2);
end