Keyphrases
- spam filtering
- feature extraction
- machine learning models
- text classification
- anti spam
- spam filters
- string kernels
- image processing
- preprocessing
- feature vectors
- feature selection
- pattern classification
- spam detection
- feature representation
- extracted features
- wavelet transform
- principal component analysis
- discriminant analysis
- image classification
- linear feature extraction
- dimensionality reduction
- face recognition
- artificial intelligence
- texture analysis
- manifold learning
- feature extractors
- feature extraction and classification
- frequency domain
- decision trees
- data analysis
- feature mapping
- search engine
- knowledge base
- pattern recognition
- machine learning approaches
- feature space
- information extraction
- gabor filters
- feature set
- linear discriminant analysis