Measures of Variability for Bayesian Network Graphical Structures

Details Measures of Variability for Bayesian Network Graphical Structures Measures of Variability for Bayesian Network Graphical Structures

2010-05-23

arxiv.org/abs/1005.4214v2

Statistics

Methodology

19 pages, 4 figures. arXiv admin note: substantial text overlap with arXiv:0909.1685

Scientific paper

The structure of a Bayesian network includes a great deal of information about the probability distribution of the data, which is uniquely identified given some general distributional assumptions. Therefore it's important to study its variability, which can be used to compare the performance of different learning algorithms and to measure the strength of any arbitrary subset of arcs. In this paper we will introduce some descriptive statistics and the corresponding parametric and Monte Carlo tests on the undirected graph underlying the structure of a Bayesian network, modeled as a multivariate Bernoulli random variable. A simple numeric example and the comparison of the performance of some structure learning algorithm on small samples will then illustrate their use.

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