A mathematical model of collaborative reputation systems (Articolo in rivista)

Type
Label
  • A mathematical model of collaborative reputation systems (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Alternative label
  • Giovanni Schmid, Ardelio Galletti, Giulio Giunta (2012)
    A mathematical model of collaborative reputation systems
    in International Journal of Computer Mathematics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Giovanni Schmid, Ardelio Galletti, Giulio Giunta (literal)
Pagina inizio
  • 2315 (literal)
Pagina fine
  • 2332 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 89 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • ICAR-CNR, _, _ (literal)
Titolo
  • A mathematical model of collaborative reputation systems (literal)
Abstract
  • This paper provides a mathematical framework for modelling collaborative reputation systems (CRSs), which are useful in many fields of electronic commerce. A CRS is an algorithm that, at discrete points in time, receives in input from a set of users some ratings of a set of objects and generates a reputation for both the raters and the evaluated objects. Sufficient conditions for the convergence of a CRS are given, using basic results of the fixed point theory, and in particular for a broad class of iterative filtering methods and their related CRSs, generalizing some previous results. Finally, we analyse a simple kind of CRS which allows to use a priori information on the reliability of a subset of raters. Experimental results provide evidence that such CRSs exhibit high level of robustness against unfair raters. (literal)
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