Appears in: Nineteenth International Conference on Machine Learning (ICML-2002), Sydney, Australia, 8-12 July 2002.

Univariate Polynomial Inference by Monte Carlo Message Length Approximation

Leigh J. Fitzgibbon, David L. Dowe, & Lloyd Allison,
School of Computer Science and Software Engineering, Monash University, Australia 3168.

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Abstract: We apply the Message from Monte Carlo (MMC) algorithm to inference of univariate polynomials. MMC is an algorithm for point estimation from a Bayesian posterior sample. It partitions the posterior sample into sets of regions that contain similar models. Each region has an associated message length (given by Dowe's MMLD approximation) and a point estimate that is representative of models in the region. The regions and point estimates are chosen so that the Kullback-Leibler distance between models in the region and the associated point estimate is small (using Wallace's FSMML Boundary Rule). We compare the MMC algorithm's point estimation performance with Minimum Message Length [12] and Structural Risk Minimisation on a set of ten polynomial and non-polynomial functions with Gaussian noise. The orthonormal polynomial parameters are sampled using reversible jump Markov chain Monte Carlo methods.


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© L. Allison   (or as otherwise indicated),
Faculty of Information Technology (Clayton), Monash University, Australia 3800 (6/'05 was School of Computer Science and Software Engineering, Fac. Info. Tech., Monash University,
was Department of Computer Science, Fac. Comp. & Info. Tech., '89 was Department of Computer Science, Fac. Sci., '68-'71 was Department of Information Science, Fac. Sci.)
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