Multitask Learning with Graph Neural Network for Travel Time Estimation

Table 1

The input and output variables of the modules.

	Traffic module			Speed module			Travel time module
Input	A, Fs	A, F^t	S^t	st, w	Ss, C	sp	sˆp	Speed, length
Model	GCN	GCN	GRU			GAT	Multitask learning
Output	Ss	S^t	st	C	sp	sˆp	Speed	t