clc;clear?all;
%sample=textread（‘irisdata.txt‘）;
[attrib1?attrib2?attrib3?attrib4?class]?=?textread（‘irisdata.txt‘?‘%f%f%f%f%s‘?‘delimiter‘?‘‘）;
A=[attrib1?attrib2?attrib3?attrib4];
for?k=1:150
????for?i=1:4
????????x（ik）=A（ki）;
????end
end
w=zeros（53）;%5個特征?3類
x?=?[x;ones（1150）];
flag=1;n=0;
j=1;
while（flag）
????if?j>50
????????j=1;
????end
????for?i=1:3
????????f=1;
????????for?k=1:3
????????????a=j+50*（i-1）;
????????????d（k）=w（:k）‘*x（:a）;?%?1?51?101
????????end
????????for?k=1:3
????????????if?k~=i
????????????????if?d（i）<=d（k）??%update?weight
????????????????????f=0;
????????????????end
????????????end
????????end
????????if?~f
????????????for?k=1:3
????????????????if?k==i
????????????????????w（:k）=w（:k）+x（:j+50*（i-1））;
????