Before revision:  Here, to address this situation and examine the performance of the HMM, we compare it with the Gaussian mixture model (GMM), which is a statistically simpler model than the HMM with no assumption of Markovianity .
After revision:  Here, to address this situation and examine the performance of the HMM, we compare the model with the Gaussian mixture model (GMM), which is a statistically simpler model than the HMM with no assumption of Markovianity .