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The Hypothesis of Urban Scaling: formalization, implications, and challenges

Abstract

There is strong expectation that cities, across time, culture and level of development, share much in common in terms of their form and function. Recently, attempts to formalize mathematically these expectations have led to the hypothesis of urban scaling, namely that certain properties of all cities change, on average, with their size in predictable scale-invariant ways. The emergence of these scaling relations depends on a few general properties of cities as social networks, co-located in space and time, that conceivably apply to a wide range of human settlements. Here, we discuss the present evidence for the hypothesis of urban scaling, some of the methodological issues dealing with proxy measurements and units of analysis and place these findings in the context of other theories of cities and urban systems. We show that a large body of evidence about the scaling properties of cities indicates, in analogy to other complex systems, that they cannot be treated as extensive systems and discuss the consequences of these results for an emerging statistical theory of cities.

Type

Working Paper

Author(s)

Jose Lobo, Luis Bettencourt, Geoffrey West, Hyejin Youn

Date Published

2015

Citations

Lobo, Jose, Luis Bettencourt, Geoffrey West, and Hyejin Youn. 2015. The Hypothesis of Urban Scaling: formalization, implications, and challenges.

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