A Bilevel Multiobjective Optimisation Approach for Solving the Evacuation Location Assignment Problem
In this paper, a bilevel multiobjective optimisation model is proposed to solve the evacuation location assignment problem. The model incorporates the two decision-makers’ spaces, namely, urban planners and evacuees. In order to solve the proposed problem, it is first reformulated into a single-leve...
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2019/6052931 |
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| author | Ahmed W. A. Hammad |
| author_facet | Ahmed W. A. Hammad |
| author_sort | Ahmed W. A. Hammad |
| collection | DOAJ |
| description | In this paper, a bilevel multiobjective optimisation model is proposed to solve the evacuation location assignment problem. The model incorporates the two decision-makers’ spaces, namely, urban planners and evacuees. In order to solve the proposed problem, it is first reformulated into a single-level problem using the Karush–Kuhn–Tucker conditions. Next, the problem is linearised into a mixed-integer linear programming model and solved using an off-the-shelf solver. A case study is examined to showcase the applicability of the proposed model, which is solved using single-objective and multiobjective lexicographic optimisation approaches. The model provides planners with an ability to determine the best locations for placement of shelters in such a way that the evacuees’ traffic assignment on the existing network is optimised. |
| format | Article |
| id | doaj-art-1230d149493f4dac99cc6b17bf734f34 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-1230d149493f4dac99cc6b17bf734f342025-02-03T01:23:33ZengWileyAdvances in Civil Engineering1687-80861687-80942019-01-01201910.1155/2019/60529316052931A Bilevel Multiobjective Optimisation Approach for Solving the Evacuation Location Assignment ProblemAhmed W. A. Hammad0Faculty of Built Environment, UNSW Sydney, Sydney, AustraliaIn this paper, a bilevel multiobjective optimisation model is proposed to solve the evacuation location assignment problem. The model incorporates the two decision-makers’ spaces, namely, urban planners and evacuees. In order to solve the proposed problem, it is first reformulated into a single-level problem using the Karush–Kuhn–Tucker conditions. Next, the problem is linearised into a mixed-integer linear programming model and solved using an off-the-shelf solver. A case study is examined to showcase the applicability of the proposed model, which is solved using single-objective and multiobjective lexicographic optimisation approaches. The model provides planners with an ability to determine the best locations for placement of shelters in such a way that the evacuees’ traffic assignment on the existing network is optimised.http://dx.doi.org/10.1155/2019/6052931 |
| spellingShingle | Ahmed W. A. Hammad A Bilevel Multiobjective Optimisation Approach for Solving the Evacuation Location Assignment Problem Advances in Civil Engineering |
| title | A Bilevel Multiobjective Optimisation Approach for Solving the Evacuation Location Assignment Problem |
| title_full | A Bilevel Multiobjective Optimisation Approach for Solving the Evacuation Location Assignment Problem |
| title_fullStr | A Bilevel Multiobjective Optimisation Approach for Solving the Evacuation Location Assignment Problem |
| title_full_unstemmed | A Bilevel Multiobjective Optimisation Approach for Solving the Evacuation Location Assignment Problem |
| title_short | A Bilevel Multiobjective Optimisation Approach for Solving the Evacuation Location Assignment Problem |
| title_sort | bilevel multiobjective optimisation approach for solving the evacuation location assignment problem |
| url | http://dx.doi.org/10.1155/2019/6052931 |
| work_keys_str_mv | AT ahmedwahammad abilevelmultiobjectiveoptimisationapproachforsolvingtheevacuationlocationassignmentproblem AT ahmedwahammad bilevelmultiobjectiveoptimisationapproachforsolvingtheevacuationlocationassignmentproblem |