Hierarchical topic classification for dialog speech recognition based on language model switching.
Ian R. LaneTatsuya KawaharaTomoko MatsuiSatoshi NakamuraPublished in: INTERSPEECH (2003)
Keyphrases
- speech recognition
- language model
- language modeling
- pattern recognition
- document retrieval
- n gram
- automatic speech recognition
- speech signal
- information retrieval
- probabilistic model
- query expansion
- handwriting recognition
- word error rate
- speech processing
- test collection
- classification accuracy
- image classification
- hidden markov models
- speaker identification
- query terms
- retrieval model
- smoothing methods
- speech recognition systems
- noisy environments
- image processing
- mixture model
- unsupervised learning
- machine learning
- computer vision
- feature extraction
- keywords
- support vector machine