My matlab code give me bad results please help me about MARCOS algorithm

Question

Rahim Rahim 2023-2-13

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1911475-my-matlab-code-give-me-bad-results-please-help-me-about-marcos-algorithm

回答： sunday ogundoyin 2024-1-27

I followed all the steps of the `MARCOS` (: Measurement of alternatives and ranking according to Compromise

solution) algorithm. I tried it and I follow the algorithm but always the code gave me the same restulats. Please help me... everything is okay the problem is `FKm` and `FKp`, always give the same values.

For example, lets try the alternatives are:

Networks =
  50     4   134    12    67
  74     1    50    42    75
  60    49   285     5    68
  60    45    68     6    63
  50     4   145    17    61
  83     1    44    11    63
  60    59   288     4    75
  60    21    95     4    33

and the weights:

weights= 0.0360 0.1240 0.1040 0.3250 0.3070 0.1020

```

function Score =  MARCOS(Networks,Weights)
global CostperByte;
global Security;
global DataRate;
global PacketDelay;
global PacketJitter;
global PacketLoss;
%NumberOfNetworks;
CostperByte=1;
Security=2;
DataRate=3;
PacketDelay=4;
PacketJitter=5;
PacketLoss=6;
SIZE = size(Networks); 
NumberOfNetworks = SIZE(1);
NumberOfCriteria = SIZE(2);
AAI=zeros(1,NumberOfCriteria); 
AI= zeros(1,NumberOfCriteria);
 for j=1:NumberOfCriteria
    if ( (j==DataRate)  || (j==Security) ) % benifit 
        AAI(1,j)= min (Networks(:,j));
        AI(1,j)=max (Networks(:,j));
    else
        AAI(1,j)=max (Networks(:,j));
        AI(1,j)=min(Networks(:,j));
        
    end
 end
Networks= [ AAI ; Networks ; AI];
SIZE = size(Networks); 
NumberOfNetworks = SIZE(1);
NumberOfCriteria = SIZE(2);
Normalization=[];
 for i=1:NumberOfNetworks
    for j=1:NumberOfCriteria
     if ( (j==DataRate)  || (j==Security) )      %%%%%%% data rate, security, bandwidth
        Normalization(i,j) = ( Networks (i,j)) / AI(1,j)  ;
        
     else                                                            %%%%%%% jitter, delay,st, 
        Normalization(i,j) = AI(1,j) / ( Networks (i,j));
     end
  end
 end
for i=1: NumberOfNetworks
  for j=1:  NumberOfCriteria
        W(i,j)=Normalization(i,j)*Weights(j);
  end
end
Saai= sum(W(1,:)); 
Sai= sum(W(NumberOfNetworks,:)) ;
W=W(2:NumberOfNetworks-1,:);
SIZE = size(W ); 
NumberOfNetworks = SIZE(1);
NumberOfCriteria = SIZE(2);
  
for i=1:NumberOfNetworks
    S(i) =sum( W(i,:)); 
end
for i = 1: NumberOfNetworks
Km(i) = S(i)/ Saai;
    Kp(i) = S(i) / Sai;
end
for i=1:NumberOfNetworks
FKm(i) = Kp(i)/( Kp(i)+Km(i));
FKm(i)
FKp(i) = Km(i)/( Kp(i)+Km(i));
end 
for i=1:NumberOfNetworks
FK(i)= ( FKm(i) + (FKp(i)) ) /  (  1+ (   (1-FKp (i))/FKp(i)    ) + (    (1-FKm(i))/FKm(i)   )      ) ; 
end 
%%summation%%
Results=[]; 
for i=1:NumberOfNetworks 
   Results= [Results; FK(i)  ];   
end
Score= Results;
end```
**Tried the code above