linearkerneltrace.m.svn-base

来自「a function inside machine learning」· SVN-BASE 代码 · 共 7 行

function [trace, diagK] = linearKernelTrace(X1, kernelParams)
%A function to compute the linear kernel trace of kernel matrix formed by
%X1*X1' 
numX1Examples = size(X1, 1); 

diagK = sum(X1.^2, 2);
trace = sum(diagK);