Discovering word associations in news media via feature selection and sparse classification.
Brian GawaltJinzhu JiaLuke MiratrixLaurent El GhaouiBin YuSophie ClavierPublished in: Multimedia Information Retrieval (2010)
Keyphrases
- feature selection
- classification accuracy
- text classification
- machine learning
- support vector
- classification models
- feature space
- news media
- high dimensionality
- feature extraction
- discriminative features
- feature subset
- feature set
- co occurrence
- text categorization
- method for feature selection
- model selection
- multi class
- irrelevant features
- sparse pca
- image classification
- decision trees
- unsupervised learning
- feature vectors
- feature selection and classification
- supervised learning