matlab灰色预测关联度

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matlab灰色预测关联度

function y=guanlian()
% x = [41462, 28969, 32251, 47694, 32265, 27819, 33539, 36994];
%x=xlsread('Statetotal.xlsx')
x=xlsread('StateTotalyuce.xlsx')
n1=size(x,1);
for i=1:n1
x(i,:)=x(i,:)/x(i,1); %????? 
end
data=x
n=size(data,2); %??????????????? 
ck=data(1,:); %??????
bj=data(1:end,:); %??????
m2=size(bj,1); %????????
for j=1:m2
t(j,:)=bj(j,:)-ck ;
end
mn=min(min(abs(t'))); %???? 
mx=max(max(abs(t'))); %????
rho=0.5; %?????? 
ksi=(mn+rho*mx)./(abs(t)+rho*mx); %????? 
r=(sum(ksi'))/n %????
[rs,rind]=sort(r,'descend') %????????