Hub location under competition

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dc.citation.epage225en_US
dc.citation.issueNumber1en_US
dc.citation.spage214en_US
dc.citation.volumeNumber250en_US
dc.contributor.authorMahmutogullari, A. I.en_US
dc.contributor.authorKara, B. Y.en_US
dc.date.accessioned2018-04-12T10:55:17Z
dc.date.available2018-04-12T10:55:17Z
dc.date.issued2016en_US
dc.departmentDepartment of Industrial Engineeringen_US
dc.description.abstractHubs are consolidation and dissemination points in many-to-many flow networks. Hub location problem is to locate hubs among available nodes and allocate non-hub nodes to these hubs. The mainstream hub location studies focus on optimal decisions of one decision-maker with respect to some objective(s) even though the markets that benefit hubbing are oligopolies. Therefore, in this paper, we propose a competitive hub location problem where the market is assumed to be a duopoly. Two decision-makers (or firms) sequentially decide locations of their hubs and then customers choose one firm with respect to provided service levels. Each decision-maker aims to maximize his/her own market share. We propose two problems for the leader (former decision-maker) and follower (latter decision-maker): (r|Xp)hub − medianoid and (r|p)hub − centroid problems, respectively. Both problems are proven to be NP-complete. Linear programming models are presented for these problems as well as exact solution algorithms for the (r|p)hub − centroid problem. The performance of models and algorithms are tested by computational analysis conducted on CAB and TR data sets.en_US
dc.description.provenanceMade available in DSpace on 2018-04-12T10:55:17Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 179475 bytes, checksum: ea0bedeb05ac9ccfb983c327e155f0c2 (MD5) Previous issue date: 2016en
dc.identifier.doi10.1016/j.ejor.2015.09.008en_US
dc.identifier.eissn1872-6860
dc.identifier.issn0377-2217
dc.identifier.urihttp://hdl.handle.net/11693/36844
dc.language.isoEnglishen_US
dc.publisherElsevieren_US
dc.relation.isversionofhttp://dx.doi.org/10.1016/j.ejor.2015.09.008en_US
dc.source.titleEuropean Journal of Operational Researchen_US
dc.subjectCompetition modelsen_US
dc.subjectCompetitive locationen_US
dc.subjectHub locationen_US
dc.subjectCommerceen_US
dc.subjectCompetitionen_US
dc.subjectLinear programmingen_US
dc.subjectLocationen_US
dc.subjectHub locationen_US
dc.subjectHub location problemsen_US
dc.subjectLinear programming modelsen_US
dc.subjectModels and algorithmsen_US
dc.subjectOptimal decisionsen_US
dc.subjectDecision makingen_US
dc.titleHub location under competitionen_US
dc.typeArticleen_US

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