FROM LOGNORMAL DISTRIBUTION TO POWER LAW: A NEW CLASSIFICATION OF THE SIZE DISTRIBUTIONS
Abstract
We propose a new classification of the size distributions of entities based on an exponent α defined from the shape of the log–log Rank Size plot. From an inspection of a large number of cases in different fields, one finds three possibilities: α = 1 giving a power law, α > 1 (parabola like curve) and 0 < α < 1 (analogous to a log normal distribution). A fourth possibility that can be defined when α < 0 was never observed. We present a modified version of models based on a random multiplicative process and an introduction of new entities during the growth. We recover all three kinds of distributions and show that the type of a distribution is conditioned by the rate of the introduction of new entities.
References
- X. Gabaix, Quarterly J. Economics 114, 739 (1999); M. Levy and S. Solomon, Int. J. Mod. Phys. C 7, 595 (1996); W. J. Reed, J. Reg. Sci. 41, 1 (2002); A. Blank and S. Solomon, Physica A 287 (2000) . Google Scholar
- J. Urban Econ. 8, 165 (1980). Crossref, ISI, Google Scholar
- J. Appl. Stat. 24, 383 (1997). Crossref, ISI, Google Scholar
- Science 293, 1818 (2001). Crossref, ISI, Google Scholar
- Physica A 330, 653 (2003). Crossref, ISI, ADS, Google Scholar
- Economic J. 63, 318 (1953). Crossref, ISI, Google Scholar
-
L. Benguigui and E. Blumenfeld-Lieberthal , Proc. CUPUM 05 ( 2005 ) , http//128.40.59163/cupum/search/Papers/detail.asp?—d=419 . Google Scholar - Eur. Phys. J. 2, 525 (1998). Crossref, ISI, ADS, Google Scholar
- Amer. Economic. Rev. 94, 1450 (2004). Google Scholar
- M. Marinov, PhD Dissertation (Technion, 2004) . Google Scholar
- Economics Lett. 49, 453 (1997). Crossref, ISI, Google Scholar
- BioScience 51, 341 (2001). Crossref, ISI, Google Scholar
- J. Phys. 17, 1155 (1998). Google Scholar
- F. Sembolini, http://casa.ucl.ac.uk/paper33.pdf . Google Scholar
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