The Evaluations of Deletion-Based Method and Mixing-Based Method for Audio CAPTCHAs.
Takuya NishimotoTakayuki WatanabePublished in: ICCHP (1) (2010)
Keyphrases
- experimental evaluation
- high accuracy
- synthetic data
- cost function
- high precision
- preprocessing
- pairwise
- computational cost
- detection method
- clustering method
- main contribution
- support vector machine
- classification method
- error rate
- classification accuracy
- input data
- mutual information
- genetic algorithm
- dynamic programming
- prior knowledge
- objective function
- bayesian networks