ANN	Artificial neural network
AS-MLC	Metal oxide semiconductor sensor for detection of carbon monoxide, manufactured by Applied Sensor Technologies
AS-MLK	Metal oxide semiconductor sensor, manufactured by Applied Sensor Technologies
AS-MLN	Metal oxide semiconductor sensor for detection of nitrogen monoxide sensor, manufactured by Applied Sensor Technologies
AS-MLV	Metal oxide semiconductor sensor for detection and reduction of gases such as VOCs and CO, manufactured by Applied Sensor Technologies
BAL	Bronchoalveolar lavage
BP	Backpropagation
CDA	Canonical discriminant analysis
CO	Carbon monoxide
CRBM	Convolutional restricted Boltzmann machine (a type of probabilistic neural network)
CVA	Cross-validated accuracy
CVV	Cross-validation value
DFA	Discriminant function analysis
FNN	Feedforward neural network
GC	Gas chromatography
H2O2	Hydrogen peroxide
LAP	Light-addressable potentiometric
LTB4	Leukotriene B4
MD	Mahalanobis distance
MDA	Malondialdehyde
MS	Mass spectrometry
NMR	Nuclear magnetic resonance
NO	Nitric oxide
PCA	Principal component analysis
PLS-DA	Partial least squares–discriminant analysis
QCL	Quantum cascade laser
ROC	Receiver operating characteristic
SVM	Support vector machine