Get Advanced Methodologies for Bayesian Networks: Second PDF

By Joe Suzuki, Maomi Ueno

ISBN-10: 3319283782

ISBN-13: 9783319283784

ISBN-10: 3319283790

ISBN-13: 9783319283791

This quantity constitutes the refereed lawsuits of the second one overseas Workshop on complex Methodologies for Bayesian Networks, AMBN 2015, held in Yokohama, Japan, in November 2015.

The 18 revised complete papers and six invited abstracts awarded have been conscientiously reviewed and chosen from various submissions. within the overseas Workshop on complex Methodologies for Bayesian Networks (AMBN), the researchers discover methodologies for boosting the effectiveness of graphical types together with modeling, reasoning, version choice, logic-probability kin, and causality. The exploration of methodologies is complemented discussions of useful issues for utilising graphical versions in genuine global settings, overlaying matters like scalability, incremental studying, parallelization, and so on.

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Additional info for Advanced Methodologies for Bayesian Networks: Second International Workshop, AMBN 2015, Yokohama, Japan, November 16-18, 2015. Proceedings

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Let θijk be a conditional probability parameter of xi = k when the j-th instance of the parents of xi is observed (we write Πi = j). Buntine (1991) assumed the Dirichlet prior 18 K. Natori et al. and used an expected a posteriori (EAP) estimator as the parameter estimator Θ = (θˆijk ) (i = 1, · · · , N, j = 1, · · · , qi , k = 1, · · · , ri − 1): αijk + nijk , θˆijk = αij + nij (k = 1, · · · , ri − 1). (2) Therein, nijk represents the number of samples of xi = k when Πi = j, nij = ri k=1 nijk , αijk denotes the hyperparameters of the Dirichlet prior distributions ri αijk , and θˆijri = (αijk is a pseudo-sample corresponding to nijk ), αij = k=1 ri −1 ˆ 1 − k=1 θijk .

4, the proposed Spatially Maximum a Posteriori (SMAP) method is introduced in detail. In Sect. 5, we perform some experiments and analyze the experiment results. In Sect. 6, we give some conclusions and point out some interesting future research directions. 1 Preliminaries Bayesian Network Bayesian network is a probabilistic graphic model, whose foundation are graph theory and probability theory. A Bayesian network consists of structure and parameters. Figure 1 is a typical and well-known Bayesian network – Asia BN.

However, we use αijk = α/(ri qi ) only for correct orientation identification. Therefore, generally, the decrease of αijk leading to the increase the number of parameters in BDeu cannot be justified. Consequently, BDeu might show somewhat unstable performance in the CI test. 6 Recursive Autonomy Identification Algorithm The remaining problem is which CB algorithm we employ to implement the Bayes factor CI test. In this study, we use the recursive autonomy identification (RAI) algorithm which is the state-of-art algorithm for the CB approach.

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Advanced Methodologies for Bayesian Networks: Second International Workshop, AMBN 2015, Yokohama, Japan, November 16-18, 2015. Proceedings by Joe Suzuki, Maomi Ueno


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