function?D?=?EuDist2（fea_afea_bbSqrt）
%?Euclidean?Distance?matrix
%???D?=?EuDist（fea_afea_b）
%???fea_a:????nSample_a?*?nFeature
%???fea_b:????nSample_b?*?nFeature
%???D:??????nSample_a?*?nSample_a
%???????or??nSample_a?*?nSample_b


if?~exist（‘bSqrt‘‘var‘）
????bSqrt?=?1;
end


if?（~exist（‘fea_b‘‘var‘））?|?isempty（fea_b）
????[nSmp?nFea]?=?size（fea_a）;

????aa?=?sum（fea_a.*fea_a2）;
????ab?=?fea_a*fea_a‘;
????
????aa?=?full（aa）;
????ab?=?full（ab）;

????if?bSqrt
????????D?=?sqrt（repmat（aa?1?nSmp）?+?repmat（aa‘?nSmp?1）?-?2*ab）;
????????D?=?real（D）;
????else
????

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????1198??2009-12-24?08:53??EUdistance\EuDist2.m

?????目錄??????????0??2011-05-31?18:34??EUdistance

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

?????????????????1198????????????????????2