GNSS	Global Navigation Satellite Systems
GPS	Global Positioning System
DAE	Dynamic Accuracy Estimation
LBS	Location-Based Services
IoT	Internet of Things
LPWAN	Low-Power Wide-Area Networks
IPS	Indoor Positioning System
AE	Accuracy Estimation
kNN	k-Nearest Neighbors
NN	Neural Network
DSF	Distance between Similar Fingerprints
SVM	Support Vector Machines
IPIN	Indoor Positioning and Indoor Navigation
CMN	Constant Mean
CMD	Constant Median
UR	Uniform Random
NR	Normal Random