Dictionary evaluation and optimization for sparse coding based speech processing.
Yongjun HeDeyun ChenGuanglu SunJiqing HanPublished in: Inf. Sci. (2015)
Keyphrases
- sparse coding
- sparse representation
- speech processing
- signal processing
- sparse codes
- dictionary learning
- natural images
- image classification
- speech recognition
- natural language processing
- unsupervised learning
- image representation
- multimedia systems
- linear combination
- image patches
- generative model
- object category recognition
- discriminative dictionary
- face recognition
- test images
- multiscale
- english text
- dimensionality reduction
- image features
- information extraction
- visual words
- feature vectors
- image processing
- computer vision
- mixture model
- multimedia
- artificial intelligence
- neural network