Table 2 Performance evaluation of morphological variables in the prediction of plant stress

From: Machine learning provides specific detection of salt and drought stresses in cucumber based on miRNA characteristics

Kernel type	Stress type	Model
		SVM		SVM-GA		SVM-PSO
		MSE	R²	MSE	R²	MSE	R²
Linear	Drought	1.52	0.56	1.43	0.59	1.46	0.58
	Salinity	1.46	0.58	1.43	0.59	1.28	0.64
	Drought + Salinity	1.94	0.42	1.88	0.44	1.88	0.44
Polynomial	Drought	1.46	0.58	1.46	0.58	1.43	0.59
	Salinity	1.64	0.52	1.61	0.53	1.58	0.54
	Drought + Salinity	1.97	0.41	1.88	0.44	1.97	0.41
Gaussian	Drought	1.85	0.45	1.79	0.47	1.79	0.47
	Salinity	1.67	0.51	1.58	0.54	1.67	0.51
	Drought + Salinity	1.43	0.59	1.37	0.61	1.43	0.59
Sigmoid	Drought	1.43	0.59	1.43	0.59	1.43	0.59
	Salinity	1.76	0.48	1.64	0.52	1.76	0.48
	Drought + Salinity	1.94	0.42	1.85	0.45	1.88	0.44

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ISSN: 1746-4811

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