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SGAI
2004
Springer

Exploiting Causal Independence in Large Bayesian Networks

9 years 1 months ago
Exploiting Causal Independence in Large Bayesian Networks
The assessment of a probability distribution associated with a Bayesian network is a challenging task, even if its topology is sparse. Special probability distributions based on the notion of causal independence have therefore been proposed, as these allow defining a probability distribution in terms of Boolean combinations of local distributions. However, for very large networks even this approach becomes infeasible: in Bayesian networks which need to model a large number of interactions among causal mechanisms, such as in fields like genetics or immunology, it is necessary to further reduce the number of parameters that need to be assessed. In this paper, we propose using equivalence classes of binomial distributions as a means to define very large Bayesian networks. We analyse the behaviours obtained by using different symmetric Boolean functions with these probability distributions as a means to model joint interactions. Some surprisingly complicated behaviours are obtained in ...
Rasa Jurgelenaite, Peter J. F. Lucas
Added 02 Jul 2010
Updated 02 Jul 2010
Type Conference
Year 2004
Where SGAI
Authors Rasa Jurgelenaite, Peter J. F. Lucas
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