ac_ten_fold

function [acy] = ac_ten_fold(testclass1,testclass2,N1,N2,d,folderno)
% ten-folder cross validation method for quandratic discriminant function
fn1=fix(N1/folderno);
fn2=fix(N2/folderno);
ac=0;
for i=1:folderno
    startno1=(i-1)*fn1+1;
    endno1=startno1+fn1-1;
    startno2=(i-1)*fn2+1;
    endno2=startno2+fn2-1;
    dtrian1=[];
    dtrian2=[];
    dtest1=[];
    dtest2=[];
    for n=1:N1
        if(n>=startno1&&n<=endno1)
            dtest1=[dtest1;testclass1(n,:)];
        else
            dtrian1=[dtrian1;testclass1(n,:)];
        end
    end
    for n=1:N2
        if(n>=startno2&&n<=endno2)
            dtest2=[dtest2;testclass2(n,:)];
        else
            dtrian2=[dtrian2;testclass2(n,:)];
        end
    end
        [mu_cap_class1,cov_cap_class1]=ml(dtrian1,N1-fn1,d);
        [mu_cap_class2,cov_cap_class2]=ml(dtrian2,N2-fn2,d);
        p1=(N1-fn1)/((N1-fn1)+(N2-fn2));
        p2=(N2-fn2)/((N1-fn1)+(N2-fn2));
        [A,B,C]=discriminant(mu_cap_class1',mu_cap_class2',cov_cap_class1,cov_cap_class2,p1,p2);
        ac_class1=accurancy(fn1,dtest1,A,B,C,1);
        ac_class2=accurancy(fn2,dtest2,A,B,C,0);
        ac_avg=(ac_class1+ac_class2)/2;
        ac=ac+ac_avg;
end
    acy=ac/folderno;
end