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Compute centroid means (vectorized)

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neingeist 2014-11-17 23:13:57 +01:00
parent 39b09f144a
commit 6c51a29ca2
1 changed files with 3 additions and 11 deletions
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14
ex7/computeCentroids.m
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@ -27,17 +27,9 @@ centroids = zeros(K, n);
% %
for k = 1:K for k = 1:K
count = 0; X_in_k = X(idx == k, :);
if size(X_in_k, 1) > 0
% XXX vectorize centroids(k, :) = sum(X_in_k)/size(X_in_k, 1);
for i = 1:m
if idx(i) == k
centroids(k, :) += X(i, :);
count += 1;
end
end
if count > 0
centroids(k, :) /= count;
end end
end end