Scaling Behavior of Public Procurement Activity

Abstract

Public procurement refers to the purchase by public sector entities, such as government departments or local authorities, of Services, Goods, or Works. It accounts for a significant share of OECD countries' expenditures. However, while governments are expected to execute them as efficiently as possible, there is a lack of methodologies for an adequate comparison of procurement activity between institutions at different scales, which represents a challenge for policymakers and academics. Here, we propose using methods from urban scaling laws literature to study public procurement activity among 278 Portuguese municipalities between 2011 and 2018. We find that public procurement expenditure scales sub-linearly with population size, indicating an economy of scale for public spending as cities increase their population size. Moreover, when looking at the municipal Scale-Adjusted Indicators (the deviations from the scaling laws) by contract type -- Works, Goods, and Services -- we obtain a new local characterization of municipalities based on the similarity of procurement activity. These results make up a framework for quantitatively studying local public expenditure by enabling policymakers a more appropriate ground for comparative analysis.

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References in corpus (15)

• Constructing cities, deconstructing scaling laws
• Paradoxical Interpretations of Urban Scaling Laws
• Large cities are less green
• Distance to the scaling law: a useful approach for unveiling relationships between crime and urban metrics
• Computational Socioeconomics
• Rich and Poor Cities in Europe. Urban Scaling to Mapping European Economic Convergence
• Scale-adjusted metrics for predicting the evolution of urban indicators and quantifying the performance of cities
• Urban Scaling of Cities in the Netherlands
• A common trajectory recapitulated by urban economies
• Spatial interactions in urban scaling laws
• Complexity science approach to economic crime
• Universal Scaling Laws in Metro Area Election Results
• How the geometry of cities explains urban scaling laws and determines their exponents
• Exponential and power laws in public procurement markets
• The role of city size and urban metrics on crime modeling