function y = AverageDistortion (X,C)
% 乞閉恐邦 拌魂 
% 澇仿 牢磊 :
%  X:  切嚼 氦磐 凱, M x K 青紡, 阿 青籃 K瞞盔狼 切嚼氦磐撈促
% C:  內靛合, N x K 青紡, 阿 青籃 K瞞盔狼 內靛況靛撈促. 
% 免仿 牢磊 :
%  y:  切嚼凱狼 乞閉 恐邦苞 內靛合
[M,K] = size(X);
[N,K] = size(C);
D = 0;
 
for i = 1:M
    min = inf;
    for j = 1:N
        if dist(X(i,:),C(j,:)) < min
            min = dist(X(i,:),C(j,:));
        end
    end
    D = D + min;
end
y = D/M;