Risk-averse stochastic orienteering problems

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buir.contributor.authorÇavuş, Özlem
dc.citation.epage364en_US
dc.citation.issueNumber3en_US
dc.citation.spage346en_US
dc.citation.volumeNumber20en_US
dc.contributor.authorÇavuş, Özlem
dc.date.accessioned2020-11-13T10:18:41Z
dc.date.available2020-11-13T10:18:41Z
dc.date.issued2019
dc.departmentDepartment of Industrial Engineeringen_US
dc.description.abstractIn this study, we consider risk-averse orienteering problems with stochastic travel times or stochastic rewards. In risk-neutral orienteering problems, the objective is generally to maximize the expected total reward of visited nodes. However, due to uncertain travel times or uncertain rewards, the dispersion in total reward collected may be large, which necessitates an approach that minimizes the dispersion (risk) in addition to maximizing the expected total reward. To handle this, for the orienteering problems with stochastic travel times or stochastic rewards, we suggest two different formulations with an objective of coherent measures of risk. For both problems, we conduct an experimental study using two different coherent measures of risk, which have been extensively used in the literature, and compare the results. The computational results show that, in both models suggested and under both risk measures used, the decision maker is able to obtain a tour with expected total reward being close to the expected total reward of risk-neutral solution, however with a significant decrease in the standard deviation of total reward.en_US
dc.identifier.doi10.18038/estubtda.540384en_US
dc.identifier.eissn2667-4211
dc.identifier.issn1302-3160
dc.identifier.urihttp://hdl.handle.net/11693/54505
dc.language.isoEnglishen_US
dc.publisherEskişehir Teknik Üniversitesien_US
dc.relation.isversionofhttps://doi.org/10.18038/estubtda.540384en_US
dc.source.titleEskişehir Technical University Journal of Science and and Technology A- Applied Sciences and Engineeringen_US
dc.subjectStochastic orienteering problemen_US
dc.subjectRisk-averse optimizationen_US
dc.subjectCoherent measures of risken_US
dc.subjectMean conditional valueat-risken_US
dc.subjectMean semi-deviationen_US
dc.titleRisk-averse stochastic orienteering problemsen_US
dc.typeArticleen_US
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