... enabled in-
stead the use of infinite models, in which the
number of hidden categories is not fixed, but
can grow with the amount of training data.
Here we develop the infinite tree, a new infi-
nite ... complex model forms, so as to
allow multiple, group-specific, infinite mixture mod-
els to share their mixture components. The closely
related infinite hidden Markov model is an HMM
in which...