Keyphrases
- feature selection
- discriminative features
- sparse pca
- high dimension
- feature extraction
- mutual information
- text categorization
- classification accuracy
- selected features
- text classification
- web image annotation
- sparse data
- feature space
- informative features
- sparse representation
- high dimensionality
- feature selection algorithms
- high dimensional
- compressive sensing
- unsupervised learning
- feature subset
- information gain
- feature set
- machine learning
- class separability
- irrelevant features
- canonical correlation analysis
- feature ranking
- small sample
- support vector machine
- dimensionality reduction
- dictionary learning
- classification models
- dimension reduction
- decision stumps
- feature selection and classification
- microarray data
- gene expression data