Acc+Gyro	Accelerometer and Gyroscope
FN	False negative
FP	False Positive
GEI	Gait energi image
GRFs	Ground contact forces
HMM	Hidden Markov model
KNN	K-nearest neighbor
KSOM	Kohonen self-organizing mapping
LR	Logistic regression
LSS	Lumbar spinal canal stenosis
O-SVM	Optimized support vector machine
PCA	Principal component analysis
PCs	Principal components
Pre+Acc	Pressure sensor and accelerometer
Pre+Gyro	Pressure sensor and gyroscope
RBF	Radial basis function
RF	Random forest
SVM	Support vector machine
TP	True positive
TN	True negative