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Eur. Phys. J. B 47, 459466 (2005) DOI: 10.1140/epjb/e2005-00332-y THE EUROPEAN

Summary: Eur. Phys. J. B 47, 459466 (2005)
DOI: 10.1140/epjb/e2005-00332-y THE EUROPEAN
Innovation flow through social networks: productivity distribution
in France and Italy
T. Di Matteo1,a
, T. Aste1
, and M. Gallegati2
Department of Applied Mathematics, Research School of Physical Sciences and Engineering, The Australian National
University, Canberra ACT 0200, Australia
Department of Economics, Universit`a Politecnica delle Marche, Piaz.le Martelli 8, 60121 Ancona, Italy
Received 24 November 2004 / Received in final form 10 July 2005
Published online 28 October 2005 c EDP Sciences, Societ`a Italiana di Fisica, Springer-Verlag 2005
Abstract. From a detailed empirical analysis of the productivity of non financial firms across several
countries and years we show that productivity follows a non-Gaussian distribution with `fat tails' in
the large productivity region which are well mimicked by power law behaviors. We discuss how these
empirical findings can be linked to a mechanism of exchanges in a social network where firms improve
their productivity by direct innovation and/or by imitation of other firm's technological and organizational


Source: Aste, Tomaso - Department of Applied Mathematics, Australian National University
Di Matteo, Tiziana - Department of Mathematics, King's College London


Collections: Materials Science; Mathematics; Physics