Dynamic Time Warping (DTW) for Single Word and Sentence ...

DTW for Single Word and Sentence Recognizers
Classifier Design in Practice
• Need a priori probability P ( ) i (not too bad)
• Need class conditional PDF p
• Problems:
– limited training data
– limited computation
– class-labeling potentially costly and prone to error
– classes may not be known
– good features not known
• Parametric Solution:
– Assume that p (x / )
has a particular parametric form
i
– Most common representative: multivariate normal density
12
(x / i )