function?[K]?=?CalcKernel（kerxy）
%?Calculate?kernel?function.???
%
%?x:?輸入樣本n1×d的矩陣n1為樣本個數(shù)d為樣本維數(shù)
%?y:?輸入樣本n2×d的矩陣n2為樣本個數(shù)d為樣本維數(shù)
%
%?ker??核參數(shù)（結構體變量）
%?the?following?fields:
%???type???-?linear?:??k（xy）?=?x‘*y
%????????????poly???:??k（xy）?=?（x‘*y+c）^d
%????????????gauss??:??k（xy）?=?exp（-0.5*（norm（x-y）/s）^2）
%????????????tanh???:??k（xy）?=?tanh（g*x‘*y+c）
%???degree?-?Degree?d?of?polynomial?kernel?（positive?scalar）.
%???offset?-?Offset?c?of?polynomial?and?tanh?kernel?（scalar?negative?for?tanh）.
%???width??-?Width?s?of?Gauss?kernel?（positive?scalar）.
%???gamma??-?Slope?g?of?the?tanh?kernel?（positive?scalar）.
%
%?ker?=?struct（‘type‘‘linear‘）;
%?ker?=?struct（‘type‘‘ploy‘‘degree‘d‘offset‘c）;
%?ker?=?struct（‘type‘‘gauss‘‘width‘s）;
%?ker?=?struct（‘type‘‘tanh‘‘gamma‘g‘offset‘c）;
%
%?K:?輸出核參數(shù)n1×n2的矩陣

%-------------------------------------------------------------%
%?轉成列向量
x?=?x‘;
y?=?y‘;

%-------------------------------------------------------------%

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
-----------?---------??----------?-----??----
?????目錄???????????0??2017-12-28?17:08??libsvm\
?????文件????????6148??2016-06-08?00:13??libsvm\.DS_Store
?????文件????????1497??2013-03-31?15:06??libsvm\COPYRIGHT
?????文件????????1653??2015-11-11?09:53??libsvm\CalcKernel.m
?????文件???????73850??2013-03-31?15:06??libsvm\FAQ.html
?????文件?????????732??2013-03-31?15:06??libsvm\Makefile
?????文件????????1087??2013-03-31?15:06??libsvm\Makefile.win
?????文件???????28271??2013-03-31?15:06??libsvm\README
?????文件???????27670??2013-03-31?15:06??libsvm\heart_scale
?????目錄???????????0??2017-12-28?17:08??libsvm\java\
?????文件?????????624??2013-03-31?15:06??libsvm\java\Makefile
?????目錄???????????0??2017-12-28?17:08??libsvm\java\libsvm\
?????文件???????63419??2013-03-31?15:07??libsvm\java\libsvm\svm.java
?????文件???????62711??2013-03-31?15:06??libsvm\java\libsvm\svm.m4
?????文件?????????868??2013-03-31?15:06??libsvm\java\libsvm\svm_model.java
?????文件?????????115??2013-03-31?15:06??libsvm\java\libsvm\svm_node.java
?????文件????????1288??2013-03-31?15:06??libsvm\java\libsvm\svm_parameter.java
?????文件??????????87??2013-03-31?15:06??libsvm\java\libsvm\svm_print_interface.java
?????文件?????????136??2013-03-31?15:06??libsvm\java\libsvm\svm_problem.java
?????文件???????51729??2013-03-31?15:07??libsvm\java\libsvm.jar
?????文件????????4835??2013-03-31?15:06??libsvm\java\svm_predict.java
?????文件????????8944??2013-03-31?15:06??libsvm\java\svm_scale.java
?????文件???????12269??2013-03-31?15:06??libsvm\java\svm_toy.java
?????文件????????8355??2013-03-31?15:06??libsvm\java\svm_train.java
?????文件??????????81??2013-03-31?15:06??libsvm\java\test_applet.html
?????目錄???????????0??2017-12-28?17:08??libsvm\matlab\
?????文件????????1499??2013-03-31?15:06??libsvm\matlab\Makefile
?????文件????????9733??2013-03-31?15:06??libsvm\matlab\README
?????文件???????27670??2013-03-31?15:06??libsvm\matlab\heart_scale
?????文件????????4069??2013-03-31?15:06??libsvm\matlab\libsvmread.c
?????文件????????8192??2013-10-20?10:41??libsvm\matlab\libsvmread.mexw32
............此處省略59個文件信息