Volume 69, Number 2, January 2005
|Page(s)||298 - 303|
|Section||Interdisciplinary physics and related areas of science and technology|
|Published online||22 December 2004|
Life, death and preferential attachment
Informatics and Mathematical Modeling, Technical University of Denmark Building 321 - DK-2800 Lyngby, Denmark
2 The Niels Bohr Institute - Blegdamsvej 17, DK-2100 Copenhagen Ø, Denmark
Accepted: 10 November 2004
Scientific communities are characterized by strong stratification. The highly skewed frequency distribution of citations of published scientific papers suggests a relatively small number of active, cited papers embedded in a sea of inactive and uncited papers. We propose an analytically soluble model which allows for the death of nodes. This model provides an excellent description of the citation distributions for live and dead papers in the SPIRES database. Further, this model suggests a novel and general mechanism for the generation of power law distributions in networks whenever the fraction of active nodes is small.
PACS: 89.65.-s – Social and economic systems / 89.75.-k – Complex systems
© EDP Sciences, 2005
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