function?[K]?=?kernel（kerxy）
%?Calculate?kernel?function.???

switch?ker.type
????case?‘linear‘
????????K?=?x‘*y;
????case?‘ploy‘
????????d?=?ker.degree;
????????c?=?ker.offset;
????????K?=?（x‘*y+c）.^d;
????case?‘gauss‘
????????
????????s?=?ker.width;
????????rows?=?size（x2）;
????????cols?=?size（y2）;???
????????tmp?=?zeros（rowscols）;
????????for?i?=?1:rows
????????????for?j?=?1:cols
????????????????tmp（ij）?=?norm（x（:i）-y（:j））;
????????????end
????????end????????
????????K?=?exp（-0.5*（tmp/s）.^2）;

????case?‘tanh‘
????????g?=?ker.gamma;
????????c?=?ker.offset;
????????K?=?tanh（g*x‘*y+c）;
????otherwise
????????K?=?0;
end

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件?????????633??2013-10-14?17:23??9、SVM方法\kernel.m
?????文件????????1081??2015-04-11?08:53??9、SVM方法\SVM.m
?????文件????????2437??2013-10-14?17:25??9、SVM方法\svmSim.m
?????文件????????2916??2013-10-14?17:26??9、SVM方法\svmTrain.m