fcm_calcd.m

模糊C均值聚类的MATLAB实现

function Dmat = fcm_calcD(Xdat,Cmat);
%   function Dmat = fcm_calcD(Xdat,Cmat);
%
%   Compute matrix of distances between data samples and cluster centers
%
%   Xdat = matrix of data set of size (M,N)
%   Cmat = matrix of centroids of size (M,K)
%   Dmat = matrix of distances of size (K,N)
%
%   write by : DD
%       date : 2001/03/16

[M,N] = size(Xdat);
[M2,K] = size(Cmat);

if (M ~= M2)
    error('fcm_calcD() : incompatible dimensions');
end

for ik=1:K
    for ii=1:N
        dvect = Xdat(:,ii)-Cmat(:,ik);
        Dmat(ik,ii) = dvect'*dvect;
    end
end
return %% end of function fcm_calcD()