Metro Traffic Flow Prediction via Knowledge Graph and Spatiotemporal Graph Neural Network

Table 2

Edges of metro knowledge graph.

Head entity	Relation	Tail entity	Number
Station	closeTo	Station	528
Station	belongTo	Line	381
Station	belongTo	Area	12
POI	closeTo	Station	1.258 million
Station	influencedBy	Weather	1.435 million
Station	influencedBy	Event	14,000