recognition
recognition
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Comparative to the training, recognition is
much simpler and the procedure is given below.
- (1)
- Take an observation sequence to be recognized and
- Calculate the forward and backward probabilities for
each HMM, using the recursions 1.5 and
1.2.
- As in the equation 1.53
calculate the likelihoods, tex2html_wrap_inline3112
- The recognized class tex2html_wrap_inline3114 , to which the
observation sequence belongs, is given by
displaymath3116
- (3)
- Go to step (2), unless all the observation sequences to be recognized are
considered.
The recognition rate in this case can be calculated as the ratio
between number of correctly recognized speech units and total number
of speech units (observation sequences) to be recognized.
Narada Warakagoda
Fri May 10 20:35:10 MET DST 1996