Keyphrases
- pattern recognition
- information retrieval
- decision trees
- automatic classification
- image database
- classification accuracy
- information retrieval systems
- classification systems
- classification scheme
- classification method
- supervised learning
- pattern classification
- text classification
- data mining
- training set
- support vector
- benchmark datasets
- test collection
- training samples
- machine learning
- feature selection
- retrieval model
- classification rules
- class labels
- image retrieval
- query expansion
- unsupervised learning
- object recognition
- preprocessing
- support vector machine
- xml documents