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A compelling argument for the gravity p-median model


  • Carling, Kenneth

    (School of Technology and Business Studies)

  • Håkansson, Johan

    () (The Swedish Research Institute of Trade (HUI))


The p-median model is used to locate P facilities to serve a geographically distributed population. Conventionally, it is assumed that the population always travels to the nearest facility. Drezner and Drezner (2006, 2007) re-estate three arguments on why this assumption might be incorrect, and they introduce the gravity p-median model to relax the assumption. We favour the gravity p-median model, but we note that in an applied setting, the three arguments are incomplete. In this communication, we point at the existence of a fourth compelling argument for the gravity p-median model.

Suggested Citation

  • Carling, Kenneth & Håkansson, Johan, 2012. "A compelling argument for the gravity p-median model," HUI Working Papers 77, HUI Research.
  • Handle: RePEc:hhs:huiwps:0077

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    Cited by:

    1. Jia, Tao & Carling, Kenneth & Håkansson, Johan, 2013. "Trips and Their CO2-Emissions Induced by a Shopping Center," HUI Working Papers 88, HUI Research.
    2. Carling, Kenneth & Han, Mengjie & Håkansson, Johan & Rebreyend, Pascal, 2013. "An Empirical Test of the Gravity p-Median Model," HUI Working Papers 90, HUI Research.

    More about this item


    travel time; spatial aggregation; multi-purpose trips;

    JEL classification:

    • L22 - Industrial Organization - - Firm Objectives, Organization, and Behavior - - - Firm Organization and Market Structure
    • L81 - Industrial Organization - - Industry Studies: Services - - - Retail and Wholesale Trade; e-Commerce
    • R12 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General Regional Economics - - - Size and Spatial Distributions of Regional Economic Activity; Interregional Trade (economic geography)


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