Keyphrases
- spam filters
- communication tools
- spam filtering
- spam detection
- text mining
- low pass filter
- image filtering
- frequency response
- multi layer
- gabor filters
- electronic mail
- image processing
- steerable filters
- edge enhancement
- rank order
- data sets
- band pass filters
- instant messaging
- adaptive filtering
- morphological filters
- edge detection
- website
- neural network