Improving fairness in ambulance planning by time sharing

Show simple item record Jagtenberg, CJ Mason, AJ 2022-04-26T03:37:01Z 2022-04-26T03:37:01Z 2020-2-1
dc.identifier.issn 0377-2217
dc.description.abstract Most literature on the ambulance location problem aims to maximize coverage, i.e., the fraction of people that can be reached within a certain response time threshold. Such a problem often has one optimum, but several near-optimal solutions may exist. These may have a similar overall performance but provide different coverage for different regions. This raises the question: are we making ‘arbitrary’ choices in terms of who gets coverage and who does not? In this paper we propose to share time between several good ambulance configurations in the interest of fairness. We argue that the Bernoulli–Nash social welfare measure should be used to evaluate the fairness of the system. Therefore, we formulate a nonlinear optimization model that determines the fraction of time spent in each configuration to maximize the Bernoulli–Nash social welfare. We solve this model in a case study for an ambulance provider in the Netherlands, using a combination of simulation and optimization. Furthermore, we analyze how the Bernoulli–Nash optimal solution compares to the maximum-coverage solution by formulating and solving a multi-objective optimization model.
dc.language en
dc.publisher Elsevier BV
dc.relation.ispartofseries European Journal of Operational Research
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher.
dc.subject Social Sciences
dc.subject Science & Technology
dc.subject Technology
dc.subject Management
dc.subject Operations Research & Management Science
dc.subject Business & Economics
dc.subject OR in health services
dc.subject Facility location
dc.subject Fairness
dc.subject Nonlinear optimization
dc.subject Multi-objective optimization
dc.subject MODEL
dc.subject EFFICIENCY
dc.subject RELOCATION
dc.subject EQUITY
dc.subject FORMULATION
dc.subject SERVICES
dc.subject SYSTEM
dc.title Improving fairness in ambulance planning by time sharing
dc.type Journal Article
dc.identifier.doi 10.1016/j.ejor.2019.08.003
pubs.issue 3
pubs.begin-page 1095
pubs.volume 280 2022-03-13T21:27:47Z
dc.rights.holder Copyright: The author en
pubs.end-page 1107
pubs.publication-status Published
dc.rights.accessrights en
pubs.subtype Article
pubs.subtype Journal
pubs.elements-id 779604
dc.identifier.eissn 1872-6860

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