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Bayesian networks for discrete multivariate data: an algebraic approach to inference

✍ Scribed by J.Q. Smith; J. Croft


Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
213 KB
Volume
84
Category
Article
ISSN
0047-259X

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✦ Synopsis


In this paper we demonstrate how Gro¨bner bases and other algebraic techniques can be used to explore the geometry of the probability space of Bayesian networks with hidden variables. These techniques employ a parametrisation of Bayesian network by moments rather than conditional probabilities. We show that whilst Gro¨bner bases help to explain the local geometry of these spaces a complimentary analysis, modelling the positivity of probabilities, enhances and completes the geometrical picture. We report some recent geometrical results in this area and discuss a possible general methodology for the analyses of such problems.


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