 It is not necessary to run all levels at the same time granularity.For example, it is possible to use windowing at any level in the structure so that the classification takes the average of several classifications into consideration before passing the results up the layers of the LHMM.Instead of simply using the winning HMM at level formula_15 as an input symbol for the HMM at level formula_6 it is possible to use it as a probability generator by passing the complete probability distribution up the layers of the LHMM.