Passenger Flow Prediction of Integrated Passenger Terminal Based on K-Means–GRNN

Table 1

The optimal clustering number of the Y_3C dataset estimated by several validity indicators.

Indicators	Optimal number of clusters					Final cluster number
	2	3	4	5	Other
CH	0	100	0	0	0	3
DB	0	69	0	0	31	3
KL	0	7	6	6	81	UNSURE
WINT	0	60	21	19	0	3
IGP	48	38	12	2	0	UNSURE
BWPS	0	100	0	0	0	3