ALA	Adaptive linear approximation
BDW	Best Daubechies wavelets
BFC	Best Fourier coefficients
BSS	Baseline signal stretch
CFRP	Carbon fibre-reinforced plastic
CNN	Convolutional neural network
CPU	Central processing unit
CV	Cross-validation
DXX	Damage number XX
DB	Database
FE	Feature extraction
FS	Feature selection
GPU	Graphics-processing unit
GW	Guided waves
HPO	Hyper-parameter optimisation
LDA	Linear discriminant analysis
LOGOCV	Leave-one-group-out cross-validation
ML	Machine learning
NN	Neural network
OBS	Optimal baseline selection
PC	Principle component
PCA	Principle component analysis
PCC	Pearson correlation coefficient
RBF-Kernel	Radial basis function kernel
RFE-SVM	Recursive feature elimination support vector machines*
RH	Relative humidity
RMSE	Root mean square error
SHM	Structural health monitoring
SM	Statistical moments
SVM	Support vector machines
TX	Transducer number X
TFLOPS	Tera floating-point operations per second
UG	Undamaged group