Collaborative Vehicle Routing Problem in the Urban Ring Logistics Network under the COVID-19 Epidemic

Table 2

Parameter setting.

Parameter	Description	Value
	Fixed cost of vehicle	150
	Unit distance cost of distribution vehicles	1
	Transfer cost per unit distance per unit volume of goods	0.01
	Penalty coefficient of capacity constraint	100
	Penalty coefficient of time window constraint	100
Flag	The number of iterations without updating the maximum optimal solution	5000
	Initial temperature	10000
	Cooling coefficient	0.9999