An empirical test of the gravity p-median model
2012 (English)Report (Other academic)
A customer is presumed to gravitate to a facility by the distance to it and the attractiveness of it. However regarding the location of the facility, the presumption is that the customer opts for the shortest route to the nearest facility.This paradox was recently solved by the introduction of the gravity p-median model. The model is yet to be implemented and tested empirically. We implemented the model in an empirical problem of locating locksmiths, vehicle inspections, and retail stores ofv ehicle spare-parts, and we compared the solutions with those of the p-median model. We found 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.
Place, publisher, year, edition, pages
Borlänge: Högskolan Dalarna , 2012. , 18 p.
Working papers in transport, tourism, information technology and microdata analysis, ISSN 1650-5581 ; 2012:10
distance decay, market share, network, retail, simulated annealing, travel time
Economic Geography Other Computer and Information Science
Research subject Komplexa system - mikrodataanalys, General Microdata Analysis - retail; Komplexa system - mikrodataanalys, General Microdata Analysis - methods; Komplexa system - mikrodataanalys, General Microdata Analysis - transports
IdentifiersURN: urn:nbn:se:du-11508OAI: oai:DiVA.org:du-11508DiVA: diva2:579526
FunderSwedish Retail and Wholesale Development Council