Categorizing CAPTCHA.
Sajad Shirali-ShahrezaMohammad Hassan Shirali-ShahrezaPublished in: AISec (2011)
Keyphrases
- text categorization
- user authentication
- data sets
- computer vision
- automatic categorization
- text classification
- pattern recognition
- data mining
- search engine
- expert systems
- nearest neighbor
- pairwise
- feature extraction
- face recognition
- image segmentation
- feature selection
- information systems
- learning environment
- co occurrence
- domain knowledge
- image analysis
- multiscale
- databases