kernelfunction.m

来自「用于目标识别的核辨别分析程序」· M 代码 · 共 22 行

% The kernel current function
function r=KernelFunction(x,y,d,g);

% x,y   line vectors(row)
% d     the variable parameter of RBF kernel
% g     the index number of polynomial kernel

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% RBF kernel function
tmp=x-y;
r=exp(-(tmp*tmp')/d);

% Polynomial kernel function
% r=(x*y')^g;

% Cosine kernel function
% based on Polynomial kernel
% r1=(x*y')^g;
% r2=(x*x')^g;
% r3=(y*y')^g;
% r=r1/sqrt(r2*r3);