Class-specific discriminant time-frequency analysis using novel jointly learnt non-negative matrix factorization.
Behnaz GhoraaniPublished in: EURASIP J. Adv. Signal Process. (2016)
Keyphrases
- negative matrix factorization
- class specific
- principal component analysis
- sparse representation
- dictionary learning
- image classification
- object class
- matrix factorization
- document clustering
- feature extraction
- superpixels
- sparse coding
- face recognition
- object classes
- object categories
- multiscale
- computer vision
- spectral clustering
- information retrieval
- object recognition
- small number
- data analysis
- em algorithm
- low dimensional
- signal processing
- object detection
- input image
- recommender systems
- feature space