Keyphrases
- co occurrence
- feature selection
- natural language
- machine learning
- gray level
- texture analysis
- knowledge representation
- feature space
- mutual information
- feature selection algorithms
- text categorization
- information gain
- semantic analysis
- natural language processing
- feature extraction
- selected features
- wordnet
- feature weighting
- semantic interpretation
- text classification
- feature set
- classification accuracy
- semantic relations
- concept hierarchy
- information extraction
- feature subset
- syntactic structures