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Exponential and power laws in public procurement markets

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  • Ladislav Kristoufek
  • Jiri Skuhrovec

Abstract

For the first time ever, we analyze a unique public procurement database, which includes information about a number of bidders for a contract, a final price, an identification of a winner and an identification of a contracting authority for each of more than 40,000 public procurements in the Czech Republic between 2006 and 2011, focusing on the distributional properties of the variables of interest. We uncover several scaling laws -- the exponential law for the number of bidders, and the power laws for the total revenues and total spendings of the participating companies, which even follows the Zipf's law for the 100 most spending institutions. We propose an analogy between extensive and non-extensive systems in physics and the public procurement market situations. Through an entropy maximization, such the analogy yields some interesting results and policy implications with respect to the Maxwell-Boltzmann and Pareto distributions in the analyzed quantities.

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Paper provided by arXiv.org in its series Papers with number 1309.0218.

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Date of creation: Sep 2013
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Publication status: Published in EPL 99, art. 28005, 2012
Handle: RePEc:arx:papers:1309.0218

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Web page: http://arxiv.org/

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  1. AfDB AfDB, 2008. "List of Working Paper Series (1 - 95)," Working Paper Series 356, African Development Bank.
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