Broken version of graph lasso covariance estimation

uses max prob of being in a mixture per state to assign obs profile
vectors to different sets for covariance matrix estimation. This method
does not use the init_AC_EC() output for the UC dictionary.

Problem: All the obs profile vectors seem to end up in one of the
mixtures for each of the states. As such the covariance matrix is
degenerate for the other cases.