Comparison of ToPS with other Markov model toolkits.

*The generalized version of HMMs in HMMoC and HMMConverter is different from the GHMMs as defined by Kulp [14].Specifically, they only allow the emission of whole words within a state, and neither allows sub models or the characterization of duration with a non-geometric distribution;+Tigrscan and N-SCAN implement GHMMs containing as sub-models weight arrays, maximum dependence decomposition, smoothed histograms, three-periodic Markov chains, and interpolated Markov models.However, these models can not be used individually, as the state architecture of the GHMM is hard coded in these systems.