Table 2. SVM kernel functions.

Kernel Name	Equation
Linear	$x{}_i{}^T.x_j$
Polynomial	${\left(x^T.x_i+1\right)}^P$
Sigmoid	$\tanh \left(x^T.x_i+1\right)$
RBF	$e^{\left(-\frac{1}{2{\gamma }^2}{\left|x-x_i\right|}^2\right)}$
MLP	$\tanh \left({\beta }_0{x}^T.x_i+{\beta }_1\right)$