Keyphrases
- intelligent tutoring systems
- tutoring system
- vector space
- artificial life
- artificial systems
- real world
- nonlinear dimensionality reduction
- emotion recognition
- affective states
- emotion classification
- data sets
- affect recognition
- emotional state
- data hiding
- cognitive processes
- cognitive model
- information hiding
- geodesic distance
- virtual agents
- student model
- computational models
- feature extraction