Alighting Stop Determination of Unlinked Trips Based on a Two-Layer Stacking Framework

Table 6

Indicators of smart card data for clustering.

Type	Index	Indicators	Quantification
Base indicators	1	ID	——
	2	Type	——
	3	Date	Making data into numbers, such as using 20181101 rather than November 1, 2018
	4	Transaction time	Changing transaction time to numbers in seconds with 00 : 00 : 00 a day as a reference, such as using 28800 rather than 8 : 00 : 00
	5	Boarding stop index	——
Constructed indicators	6	Weekday	=0 : The boarding day is not a weekday
			=1 : The boarding day is a weekday
	7	Weather	=0 : It rains on the boarding day
			=1 : It doesn’t rain on the boarding day
	8	Peak hours	=0 : Transaction time is not in peak hours
			=1 : Transaction time is in peak hours
	9	Type of boarding stop	=1 : The boarding stop is the first-class passenger flow center
			=2 : The boarding stop is the second-class passenger flow center
			=3 : The boarding stop is the third-class passenger flow center
	10	Administrative region of boarding stop	=1 : Boarding stop is in administrative region 1
			=2 : Boarding stop is in administrative region 2
			The rest can be done in the same manner
	11	Loyalty of passenger	=1 : Bus is an occasional selection
			=2 : Bus is an alternative selection
			=3 : Bus is a loyal selection