ML

https://www.cs.cmu.edu/~epxing/Class/10701/HW/hw3_solutions.pdf http://www.ics.uci.edu/~smyth/courses/cs274/notes/EMnotes.pdf http://www.slideshare.net/petitegeek/expectation-maximization-and-gaussian-mixture-models http://en.wikipedia.org/wiki/Multivariate_normal_distribution http://docs.scipy.org/doc/numpy/reference/generated/numpy.random.multivariate_normal.html http://docs.scipy.org/doc/numpy/reference/generated/numpy.cov.html http://en.wikipedia.org/wiki/Covariance_matrix