Selective Learning Confusion Class for Text-Based CAPTCHA Recognition.
Jun ChenXiangyang LuoYingying LiuJinwei WangYuanyuan MaPublished in: IEEE Access (2019)
Keyphrases
- visual recognition
- learning process
- learning tasks
- learning algorithm
- reinforcement learning
- mobile learning
- visual learning
- learning scheme
- recognition accuracy
- unsupervised learning
- knowledge acquisition
- active learning
- learning problems
- prior knowledge
- partial occlusion
- learning analytics
- pattern recognition
- video sequences
- learning machines
- feature extraction