%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%K-最近鄰分類器%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
clear?all
clc
y=importdata（‘F:\neural?computation\Experiment\text1\Iris.txt‘）;
p=y（:2:5）;
p=p‘;
add=ones（501）;
num=zeros（13）;
count=0;
%?for?n=1:150
%?????count=0;
for?i=1:3
????for?j=1:50
??????????for?k=1:150
???????????????distance（k）=mse（p（:k）-p（:（i-1）*50+j））;%保存每個向量與所有訓練樣本之間的距離
??????????end?
??????????
??????????[d1?index1]=sort（distance）;%對距離distance向量進行從小到大的排序
??????????num=[0?0?0];???
??????????for?m=1:20?????????%?考察num，?存放的是排序后distance前20個屬于每一類別的個數
??????????????if?index1（m）<=50
??????????????????num（1）=num（1）+1;
??????????????elseif?index1（m）<=100
??????????????????num（2）=num（2）+1;
??????????????else
??????????????????num（3）=num（3）+1;
??????????????end
??????????end??????????
??????????[d2?class]=max（num）;%??屬于哪類的個數最多，就屬于哪類，class?即就是該向量所屬的類別
??????????if??i==class
????????????count=count+1;
??????????end???
??????????A（（i-1）*50+j）=class;%存放判斷的結果
????end
end
count
rate=count/150
%?n
%?end
figureplot（y（:1）A‘r*‘）%畫圖分類

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

?????文件???????3200??2009-12-25?21:05??Iris.txt

?????文件???????1183??2010-01-09?21:58??TNNC3.m

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

?????????????????4383????????????????????2