Corrigendum to “The Fourth-Party Logistics Routing Problem Using Ant Colony System-Improved Grey Wolf Optimization”

Table 1

Parameter definition of the model.

Parameter	Parameter description
	The number of city nodes in the transportation network also indicates the label of end point
	The number of edges (3PLs) between node and node
	The k^th edge between node and node , where , and k is the index number of edges
	The time of node , including the time of processing, inventory, loading, and unloading
	The cost of node , including the cost of processing, inventory, loading, and unloading
	The time of the 3PL provider in edge
	The cost of the 3PL provider in edge
	The transport time of the route
	The transport cost of the route
	The minimum time of the 3PL provider in edge
	The maximum time of the 3PL provider in edge
	The shortest transport time between node and node
	The longest transport time between node and node
	The minimum transport time of the route
	The maximum transport time of the route
	The minimum cost of the 3PL provider in edge
	The maximum cost of the 3PL provider in edge
	The maximum transport cost between node and node
	The maximum transport cost between node and node
	The minimum transport cost of the route
	The maximum transport cost of the route
	The due date required by customer
	The total cost required by customer
	Weight of the time
	Weight of the cost
	Transport capacity of the 3PL provider in edge
	Reputation of the 3PL provider in edge
	The required transport capacity from the task
	The amount of task that transits at the node
	The delay probability of the transportation tasks
	The probability of overspending of the transportation tasks
	The required reputation required by customer
	The route from node to node
	The proportion of transport tasks undertaken by edge
	Whether the 3PL provider is selected between node and node to undertake the transportation task, which is a 0-1 variable
	Whether the edge is selected to undertake the transportation task, which is a 0-1 variable
	Whether to select node as a transit node, which is a 0-1 variable