TABLE 5.

Meaning of variables.

Variables	Meaning (at moment t)	Variables	Meaning (at moment t)
$\sigma$	Sigmoid activation function	$h_t$	State vectors
${\stackrel{\sim }{C}}_t$	Intermediate states	$X_t$	Input vectors
$f_t$	Oblivion gate	$b$	Bias vector
$i_t$	Input gate	$\tanh$	Hyperbolic tangent function
$C_t$	Transmission band	$W$	Model parameter matrix
$o_t$	Output gate