ANN	Artificial neural networks
JPEG	Joint Photographic Experts Group
GIF	Graphics Interchange Formati
FD	Fractal dimension
TIFF	Tagged Image File Format
VAST	Visual Aesthetic Sensitivity
MLP	Multilayer perceptron
FSMKL	Feature Selection Multiple Kernel Learning
RMSE	Root Mean Squared Error
ENET	Elastic Net
CGS	Correlation by Genetic Search
PLS	Partial Least Squares Regression
RF	Random Forest
RF-RFE	Random Forest - Recursive Feature Elimination
SVM	Support Vector Machines
SVM-Radial	Support Vector Machines using radial functions
PCA	Principal Components Analysis