function?k=kernel（xyivar）;
%定義核函數(shù)
if?i==1
???k=exp（（-norm（x-y）^2）/（2*var^2））;??%i=1時(shí)，使用高斯核
end
if?i==2
???k=（sum（x.*y）+1）^var;??%i=1時(shí)，使用2階多項(xiàng)式核
end

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件????????177??2007-04-18?22:37??kpca\kernel.m

?????文件???????1603??2010-06-13?14:55??kpca\kpca.m

?????文件???????1729??2007-05-31?19:02??kpca\pca.m

?????文件???????9277??2007-05-17?13:17??kpca\test.txt

?????文件???????1316??2007-05-31?19:03??kpca\test_pca_and_kpca.m

?????目錄??????????0??2011-09-16?08:31??kpca

-----------?---------??----------?-----??----

????????????????14102????????????????????6