[Retracted] Multipoint Distribution Vehicle Routing Optimization Problem considering Random Demand and Changing Load

Table 1

The definition of set and parameter symbol.

Symbol	Definition
	Node collection.
	Customer node set.
	Customer node set after partition.
	Edge set in the graph.
	Subpath collection.
	Vehicle collection.
	Energy consumption of transportation from customer point to without loads.
	The load that vehicle k carries when it leaves from customer node , .
	The total demand of customers in the subroute served by vehicle k.
	, is the vehicle’s own weight.
	Maximum load of the vehicle.
	Maximum planned load of the vehicle.
	The risk probability corresponding to the maximum load of the vehicle.
	Preset target risk probability.
	Decision variables.