Results 61 to 70 of about 1,710 (144)

Modeling fractal structure of city-size distributions using correlation functions.

open access: yesPLoS ONE, 2011
Zipf's law is one the most conspicuous empirical facts for cities, however, there is no convincing explanation for the scaling relation between rank and size and its scaling exponent.
Yanguang Chen
doaj   +1 more source

Gibrat’s law, Zipf’s law and Cointegration [PDF]

open access: yes, 2015
This paper examines the methods to detect the nature of the urban growth processes. It seems that cointegration testing enables to disentangle two versions of Gibrat’s law: a first one with growth shocks that are iid across time and cities (implying ...
Zumpe, Martin, Lalanne, Aurélie
core  

From Gibrat’s law to Zipf’s law through cointegration?

open access: yes, 2020
This article investigates the role of cointegration in the context of urban growth processes. It proposes the use of cointegration tests to distinguish between two versions of Gibrat’s law: a standard formalization with growth shocks that are iid across ...
ZUMPE, Martin, LALANNE, Aurelie
core   +1 more source

When iconicity stands in the way of abbreviation: No Zipfian effect for figurative signals.

open access: yesPLoS ONE, 2019
Zipf's law of abbreviation, relating more frequent signals to shorter signal lengths, applies to sounds in a variety of communication systems, both human and non-human.
Helena Miton, Olivier Morin
doaj   +1 more source

Fitting Ranked Linguistic Data with Two-Parameter Functions

open access: yesEntropy, 2010
It is well known that many ranked linguistic data can fit well with one-parameter models such as Zipf’s law for ranked word frequencies. However, in cases where discrepancies from the one-parameter model occur (these will come at the two extremes of the ...
Wentian Li   +2 more
doaj   +1 more source

Zipf's Law for Cities in the Regions and the Country [PDF]

open access: yes
The salient rank-size rule known as Zipf's law is not only satisfied for Germany's national urban hierarchy, but also for the city size distributions in single German regions.
Suedekum, Jens, Giesen, Kristian
core  

Emergence of Zipf’s law in the evolution of communication [PDF]

open access: yes, 2011
Zipf’s law seems to be ubiquitous in human languages and appears to be a universal property of complex communicating systems. Following the early proposal made by Zipf concerning the presence of a tension between the efforts of speaker and hearer in a ...
Fortuny Andreu, Jordi   +7 more
core   +1 more source

Testing for Zipf’s Law: A Common Pitfall [PDF]

open access: yes
It is noted that the regression procedure commonly used when testing for Zipf’s law is erroneous.Zipf’s law, rank ...
Urzúa, Carlos M.
core  

Deviations from Zipf’s Law for American cities: an empirical examination [PDF]

open access: yes, 2010
This paper presents a simple method for calculating deviations between actual city size and the size which would correspond to it with a Pareto exponent equal to one (Zipf’s Law).
Rafael, González-Val
core  

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