A Two-Stage Method of Dimensioning and Scheduling Service Providers under Patient Demand Uncertainty

Algorithm 3

EM-GMM Algorithm.

(1)	X : set of data points
(2)	k: number of clusters
(3)	Randomly initialize k cluster centers (centroids) from X
(4)	Set the Gaussian parameters
(5)	Repeat
(6)	Expectation: assign each point with a probability to a cluster
(7)	Maximization: calculate the center of cluster(centroid) k
	Until the centroid positions converge to a constant value