Table 1.

List of symbols.

Notation	Description
$S(t)$	number of susceptible at time t
$I(t)$	number of infected at time t
$R(t)$	number of recovered at time t
$D(t)$	number of deaths at time t
$\beta$	transmission rate
$\beta (t)$	transient transmission rate
${\gamma }_r$	rate of recovered
${\gamma }_d$	rate of mortality
$R_0(t)$ or $R_t$	time-dependent reproduction number
${\beta }_{net}(t)$	prediction for the transmission rate at time t
M	pre-specified training period
p	desirable forecast period
$Y_i$ and $\dot{Y_i}$	real and predicted daily values with respect to a given target variable