Journal article

Referee networks and their spectral properties

  • Slanina, F. Institute of Physics, Academy of Sciences, Praha, Czech Republic
  • Zhang, Yi-Cheng Theoretical Physics Unit, Department of Physics, Fribourg University, Switzerland
    2005
Published in:
  • Acta Physica Polonica B. - 2005, vol. 36, no. 9, p. 2797-2804
English The bipartite graph connecting products and reviewers of that product is studied empirically in the case of amazon.com. We find that the network has power-law degree distribution on the side of reviewers, while on the side of products the distribution is better fitted by stretched exponential. The spectrum of normalised adjacency matrix shows power-law tail in the density of states. Establishing the community structures by finding localised eigenstates is not straightforward as the localised and delocalised states are mixed throughout the whole support of the spectrum.
Faculty
Faculté des sciences et de médecine
Department
Département de Physique
Language
  • English
Classification
Physics
Other electronic version

Published version

License
License undefined
Identifiers
  • RERO DOC 5476
Persistent URL
https://folia.unifr.ch/unifr/documents/300044
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