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- function centroids = kMeansInitCentroids(X, K)
- %KMEANSINITCENTROIDS This function initializes K centroids that are to be
- %used in K-Means on the dataset X
- % centroids = KMEANSINITCENTROIDS(X, K) returns K initial centroids to be
- % used with the K-Means on the dataset X
- %
- % You should return this values correctly
- centroids = zeros(K, size(X, 2));
- % ====================== YOUR CODE HERE ======================
- % Instructions: You should set centroids to randomly chosen examples from
- % the dataset X
- %
- % Initialize the centroids to be random examples
- % Randomly reorder the indices of examples
- randidx = randperm(size(X, 1));
- % Take the first K examples as centroids
- centroids = X(randidx(1:K), :);
- % =============================================================
- end
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