A comparison of constrained trajectory segment models for large vocabulary speech recognition
A. Kannan, M. Ostendorf · IEEE Transactions on Speech and Audio Processing · 1998
This paper compares parametric and nonparametric constrained-mean trajectory segment models for large vocabulary speech recognition, extending distribution clustering techniques to handle polynomial mean trajectory models for robust parameter estimation. The parametric model has fewer free parameters and gives similar recognition performance to the nonparametric model, but has higher recognition costs.