Table 1. The definitions of some notations.

Notations	Explanations
$X_H$	Historical traffic features
E	External factors
S	Spatial attention matrix
U	Temporal attention matrix
X	Fused feature
$G^{TN}$	Trend spatial-temporal synchronous graph
$G^{PD}$	Pattern spatial-temporal synchronous graph
$A^{TN}$	Dynamic adjacency matrix of $G_{TN}$
$A^{PD}$	Dynamic adjacency matrix of $G_{PD}$
$O^{TN}$	Output of T-STSAM
$O^{PD}$	Output of P-STSAM
$O^F$	Output of gated fusion
$O^{GC}$	Output of gated 1D convolution
$M^l$	Number of step pairs in the $l$-th DMSTSAL
$X^l$	Output of the $l$-th DMSTSAL