A Bilevel Multiobjective Optimisation Approach for Solving the Evacuation Location Assignment Problem

Table 1

Notation adopted in proposed model.

Notation	Description
	Dummy node
	Set of all potential shelter locations
	Set of all evacuees residential zones
	Set of all nodes in the network
	The set of OD pairs, defined within the network as a single commodity with destination assigned as S
	Set of all real links connecting nodes in
	Set of links connecting nodes and
	Set of all links
	Demand flow, originating at node and heading towards node
	Population of people at node
	Free flow travel time on link
	Existing capacity of link
	Binary variable, which equals 1 if shelter is placed at location and 0 otherwise
	Flow on link for each commodity with destination S
	Travel cost variable, defined as a positive and continuous function of total flow on link ,
	Auxiliary binary variables
,	Auxiliary continuous variable