Large vocabulary conversational speech recognition with a subspace constraint on inverse covariance matrices.
Scott AxelrodVaibhava GoelBrian KingsburyKarthik VisweswariahRamesh A. GopinathPublished in: INTERSPEECH (2003)
Keyphrases
- covariance matrices
- conversational speech
- covariance matrix
- maximum likelihood
- gaussian distribution
- distance measure
- vector space
- gaussian mixture model
- object recognition
- pattern recognition
- automatic speech recognition
- feature extraction
- riemannian metric
- feature vectors
- speech recognition
- principal component analysis
- broadcast news
- log euclidean
- image sequences
- video data
- multi class
- principal components
- image features
- hidden markov models
- similarity measure