Physics – Condensed Matter – Disordered Systems and Neural Networks
Scientific paper
1999-10-21
Science 286, 509 (1999)
Physics
Condensed Matter
Disordered Systems and Neural Networks
11 pages, 2 figures
Scientific paper
Systems as diverse as genetic networks or the world wide web are best described as networks with complex topology. A common property of many large networks is that the vertex connectivities follow a scale-free power-law distribution. This feature is found to be a consequence of the two generic mechanisms that networks expand continuously by the addition of new vertices, and new vertices attach preferentially to already well connected sites. A model based on these two ingredients reproduces the observed stationary scale-free distributions, indicating that the development of large networks is governed by robust self-organizing phenomena that go beyond the particulars of the individual systems.
Albert Reka
Barabasi Albert-László
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