Conditional Independence in A Coherent Finite Setting

  • Authors:
  • Barbara Vantaggi

  • Affiliations:
  • Dipartimento di Metodi e Modelli Matematici Università “La Sapienza”, via Scarpa 16, 00161 Roma, Italy E-mail: vantaggi@dmmm.uniromal.it

  • Venue:
  • Annals of Mathematics and Artificial Intelligence
  • Year:
  • 2001

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Abstract

A definition of stochastic independence which avoids the inconsistencies (related to events of probability 0 or 1) of the classic one has been proposed by Coletti and Scozzafava for two events. We extend it to iconditional independence among finite sets of events. In particular, the case of (finite) discrete random variables is studied. We check which of the relevant properties connected with graphical structures hold. Hence, an axiomatic characterization of these independence models is given and it is compared to the classic ones.