SDP	Symmetrized Dot Pattern
ISDP	Improved Symmetrized Dot Pattern
PSO	Particle Swarm Optimization
ORB	Oriented FAST and Rotated BRIEF
Adaboost-SVM	Adaptive Boosting Support Vector Machine
SVM	Support Vector Machine
GAF	Gramian Angular Field
RP	Recurrence Plot
MTF	Markov Transition Field
CNN	Convolutional Neural Network
FFT	Fast Fourier Transform
BP	Backpropagation
VFRA	Vibration Frequency Response Analysis
GASF	Gramian Angular Summation Field
RBF	Radial Basis Function
DAG	Directed Acyclic Graph
DTW	Dynamic Time Warping
LightGBM	Light Gradient Boosting Machine
Adaboost-BP	Adaboost with Backpropagation
XGBoost-SVM	Extreme Gradient Boosting with Support Vector Machine