. 2023 Jul 5;9(7):e18001. doi: 10.1016/j.heliyon.2023.e18001

Table 1.

Characteristics of some primary references.

References	Tourists		Research Methods		Objective function		Fast Pass system
References	Homogeneous	Heterogeneous	Algorithm	Mathematic	Tourist satisfaction	Profit	Fast Pass system
[12]	◎		◎		◎
[13]	◎		◎		◎
[14]	◎		◎		◎
[15]	◎		◎		◎
[16]	◎		◎		◎
[21]	◎			◎	◎		◎
[22]	◎			◎		◎	◎
This study		◎		◎	◎	◎	◎