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Testing the gravity p-median model empirically
Högskolan Dalarna, Akademin Industri och samhälle, Statistik.ORCID-id: 0000-0003-2317-9157
Högskolan Dalarna, Akademin Industri och samhälle, Statistik.ORCID-id: 0000-0003-4212-8582
Högskolan Dalarna, Akademin Industri och samhälle, Informatik.ORCID-id: 0000-0003-4871-833X
Högskolan Dalarna, Akademin Industri och samhälle, Datateknik.ORCID-id: 0000-0003-1015-8015
2015 (engelsk)Inngår i: Operations Research Perspectives, ISSN 2214-7160, Vol. 2, nr 124, artikkel-id 132Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Regarding the location of a facility, the presumption in the widely used p-median model is that the customer opts for the shortest route to the nearest facility. However, this assumption is problematic on free markets since the customer is presumed to gravitate to a facility by the distance to and the attractiveness of it. The recently introduced gravity p-median model offers an extension to the p-median model that account for this. The model is therefore potentially interesting, although it has not yet been implemented and tested empirically. In this paper, we have implemented the model in an empirical problem of locating vehicle inspections, locksmiths, and retail stores of vehicle spare-parts for the purpose of investigating its superiority to the p-median model. We found, however, the gravity p-median model to be of limited use for the problem of locating facilities as it either gives solutions similar to the p-median model, or it gives unstable solutions due to a non-concave objective function.

sted, utgiver, år, opplag, sider
Elsevier, 2015. Vol. 2, nr 124, artikkel-id 132
Emneord [en]
p-median model, distance decay, market share, network, retail, simulated annealing, travel time
HSV kategori
Forskningsprogram
Komplexa system - mikrodataanalys, Allmänt Mikrodataaanalys - handel; Komplexa system - mikrodataanalys, Allmänt Mikrodataaanalys - metod; Komplexa system - mikrodataanalys, Allmänt Mikrodataaanalys - transporter
Identifikatorer
URN: urn:nbn:se:du-17767DOI: 10.1016/j.orp.2015.06.002OAI: oai:DiVA.org:du-17767DiVA, id: diva2:819124
Forskningsfinansiär
Swedish Retail and Wholesale Development CouncilTilgjengelig fra: 2015-06-10 Laget: 2015-06-10 Sist oppdatert: 2019-08-26bibliografisk kontrollert

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