fcm_calcu.m

FCM算法的matlab实现

function Umat = fcm_calcU(mfuz,Dmat);
%   function Umat = fcm_calcU(mfuz,Dmat);
%
%   计算或者更新模糊划分矩阵
%
%   mfuz :加权因子m
%   Dmat ：距离矩阵，大小为 (C,M)，这里使用欧氏距离
%   Umat ：模糊划分矩阵，大小为(C,M)
%
%   

[C,M] = size(Dmat);
for i=1:M
    temp=0;
     for k=1:C
         if(Dmat(k,i)==0) temp=temp+1; end
     end
     if(temp==0)
          for k=1:C
             nume = Dmat(k,i);
            deno = (nume./Dmat(:,i)).^(2/(mfuz-1));
            Umat(k,i) = 1.0/sum(deno);
         end
      else
             for k=1:C
                 if(Dmat(k,i)==0)
                     Umat(k,i)=1/temp;
                 else
                     Umat(k,i)=0;
        
                 end
             end
         end
     end

              
             
return %% end of function fcm_calcU.m