Machine Learning, Data Science, Statistics, Probability, Editors Pick.
computation of Q(θ,θ*) is compared to the previous, and if the difference is less than some threshold ϵ (e.g. ϵ = 1e-4) the EM algorithm terminates. In practice, you would want to run the algorithm several times with various initializations of θ to find the parameters that most maximize P(X|Z,θ)