getbestfaceparam.m

1.实现了最近点平分法的分类器 2.实现了基于凸函数最优解的分类器

function [W,B]=GetBestFaceParam(ClassA,ClassB)
% CA must be equal to CB;
[RA,CA]=size(ClassA);
[RB,CB]=size(ClassB);

DistanceCollection=[];
for i=1:RA
   for j=1:RB
   DistanceCollection=[DistanceCollection,distance(ClassA(i,1:end),ClassB(j,1:end))];
   end;
end;

MinValue=min(min(DistanceCollection));

Indexn=find(DistanceCollection==MinValue)

add=0;

temp=rem(Indexn(1),RB);
if temp==0
CBIndex=RB;
add=-1;
else
CBIndex=temp;
end;

CAIndex=floor(Indexn/RB)+add+1;


MidVector =0.5*(ClassA(CAIndex,1:end)+ClassB(CBIndex,1:end));


DiffVector=ClassB(CBIndex,1:end)-ClassA(CAIndex,1:end);

W=DiffVector
B=(-1).*dot(MidVector,W)