Table 4. Algorithm for sensing recognition.

Algorithm	Sensor	Application	Focus	Ref.
ANN	MOS	Coffee	Classification of coffee types	86
ANN	MOS	VOCs	VOCs recognition	97
ANN	MOS	Maize	Maize quality monitoring	98
ANN	MOS	Beer	Assessment of aromas in beer	99
ANN	MOS	Coffee	Estimating the intensity of coffee	100
ANN	MOS	Sesame oil	Sesame oil quality assessment	101
ANN	MOS	Rice	Rice quality monitoring	102
ANN	FET	VOCs	VOCs recognition	103
ANN	MOS	Fruit juices	Quality monitoring of fruit juices	104
ANN	MOS	Oil-based plant	Quality monitoring	105
ANN	MOS	Fruit	Monitoring fruit ripeness	106
ANN	MOS	Beef	Beef quality monitoring	107
ANN	MOS	Rice	Monitoring pure and adulterated rice	108
ANN	MOS	Vinegar	Identify vinegar flavor	109
XGBoost-RF	MOS	VOCs	Predicting and classification of VOCs	87
KNN + LDA	MOS	Maize	Classification of moldy maize	88
SVM	Sensor array	Tea	Tea quality monitoring	90
SVM	NIR	Salmonid	Identification of off-flavor salmonids	110
SVM	MOS	Kiwifruit	Kiwifruit ripening monitoring	111
SVM	Near-infrared	Tea	Classification of tea	112
SVM	Colorimetric sensor array	Beef	Beef quality monitoring	113
SVM	MOS	Tea	Tea aroma monitoring	114
SVM	Visualization sensor	Tea	Evaluation of black tea fermentation	115
SVM	Visualization sensor	Oil	Classification of procymidone residues	116
ELM	MOS	Tea	Tea quality monitoring	91
GBDT	GC-MS	Fish meal	Monitoring freshness state	92
GBDT	MOS	Tea polyphenols	Tea quality monitoring	117
GBDT	MOS	Chinese baijiu	Recognition baijiu	118
GBDT	MOS	VOCs	VOCs recognition	119
DT	MOS	VOCs	Classification of explosives	94
RF		VOCs	Predicting VOCs	120
RF	MOS	Pecans	Classification of pecans	121
RF	MOS	Dried gingers	Classification of dried gingers	122
RF	MOS	Strawberry juices	Strawberry juice quality monitoring	123
RF	MOS	Peach	Peach maturation monitoring	124
RF	MOS	Peach	Peach growth cycle monitoring	125
RF	MOS	Orange	Orange quality monitoring	126
RF	MOS	Tea	Tea quality monitoring	127
RF	MOS	Kiwifruit	Ripeness of postharvest kiwifruit	128
RF	MOS	Milk	Milk quality monitoring	129
RF	MOS	Satsuma mandarins	Satsuma Mandarin quality monitoring	130
RF	Colorimetric sensor array	Tencha aroma	Assess tencha aroma	131
RF		VOCs	Predicting and classification of VOCs	132
MCNA	MOS	VOCs	VOCs recognition	96
BP + ELM	MOS	VOCs	Predicting and classification of VOCs	93