Table 3.

Alternative kernels classification per test case for the first phase of COVID-19.

Label separation case	RBF (%)	Polynomial (%)
Minimal vs. severe	93.20	95.80
Hierarchical classification
Minimal vs. mild, moderate, and severe	74.65	77.91
Mild vs. moderate and severe	67.89	70.60
Moderate vs. severe	55.62	66.13
Binary classification (GAD score of 10)	85.44	90.07
Four-class classification	62.79	58.69