In:
International Journal of Modern Physics C, World Scientific Pub Co Pte Ltd, Vol. 18, No. 02 ( 2007-02), p. 297-314
Abstract:
In this paper, we propose an alternative model for collaboration networks based on nonlinear preferential attachment. Depending on a single free parameter "preferential exponent", this model interpolates between networks with a scale-free and an exponential degree distribution. The degree distribution in the present networks can be roughly classified into four patterns, all of which are observed in empirical data. And this model exhibits small-world effect, which means the corresponding networks are of very short average distance and highly large clustering coefficient. More interesting, we find a peak distribution of act-size from empirical data which has not been emphasized before. Our model can produce the peak act-size distribution naturally that agrees with the empirical data well.
Type of Medium:
Online Resource
ISSN:
0129-1831
,
1793-6586
DOI:
10.1142/S0129183107010437
Language:
English
Publisher:
World Scientific Pub Co Pte Ltd
Publication Date:
2007
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