Exploring Transit Use during COVID-19 Based on XGB and SHAP Using Smart Card Data

Table 1

Description of the smart card data.

No.	Categories	Description
1	Transaction ID	Unique ID for each transaction
2	Mode code	1: subway, 2: bus, 3: both modes (bus + subway)
3	Line ID	Unique ID for each line
4	Vehicle ID	Unique ID for each bus vehicle (not for subway)
5	Boarding station ID	Unique ID for each station (max five stations are recorded for a trip)
6	Alighting station	Unique ID for each station (max five stations are recorded for a trip)
7	Boarding date/time	Year/month/day/hour/minute/seconds
8	Alighting date/time	Year/month/day/hour/minute/seconds
9	Total travel time	Seconds
10	Total travel distance	Kilometer
11	Number of transfers	0∼4 (max four transfers available for a trip)
12	User group	1: general, 2: student, 3: elderly
13	User count	The number of boarding users (for bus trip)
14	Boarding fare	The basic fare for boarding
15	Alighting fare	Additional fare based on the travel distance
16	Zone code	Administrative unit code