ahpvector.m

来自「AHP toolbox AHPCALC Perform a 」· M 代码 · 共 32 行

function [r,c]=ahpvector(x)
%AHPVECTOR    Calculate the AHP ranking or weighting vector from an ...
%             AHP reciproal matrix.
%
%   R = AHPVECTOR(X) is the ordered AHP ranking based on the AHP matrix X.
%
%   [R,C] = AHPVECTOR(X) returns the ordered AHP ranking R 
%      and the consistency ratio C.
%      Note that C < 0.1 is considered heuristically acceptable.
sztemp=size(x);
n=sztemp(1);
[v,d]=eig(x);
i=1;
while d(i,i)<n-0.00001
  i=i+1;
end
myeig=d(i,i);
myvec=v(:,i);
r=myvec/sum(myvec);
ci=(myeig-n)/(n-1); 
randomci=[1 1 0.52 0.89 1.11 1.25 1.35 1.4 1.45 1.49 1.51];
if n>11
  rci=1.5;
else
  rci=randomci(n);
end
c=ci/rci;
if c > 0.1
 s=sprintf('Warning: Consistency ratio %.3f > 0.1',c);
disp([s]);
end