Keyphrases
- age estimation
- facial images
- ls svm
- human age estimation
- partial least squares
- least squares
- face recognition
- variable selection
- cross validation
- facial expressions
- regression methods
- support vector
- human faces
- image database
- support vector machine
- generalization ability
- linear regression
- facial features
- face detection
- correlation coefficient
- prediction model
- model selection
- improved algorithm
- input variables
- face images
- hyperparameters
- rbf neural network
- human perception
- regression model
- parameter estimation
- estimation accuracy
- subspace learning
- image classification
- svm classifier
- dimension reduction
- radial basis function
- artificial neural networks
- feature extraction