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2015 | OriginalPaper | Chapter

3. A Bit of Numerical Computation

Authors : Stefano Andreon, Brian Weaver

Published in: Bayesian Methods for the Physical Sciences

Publisher: Springer International Publishing

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Abstract

This chapter introduces the computational tools and methods that we use for sampling from the posterior distribution. Since all numerical computations, and Bayesian ones are no exception, may end in errors, we also provide a few tips to check that the numerical computation is sampling from the posterior distribution.

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Footnotes
1
JAGS (Plummer 2010) can be downloaded from http://​mcmc-jags.​sourceforge.​net/​.
 
2
Skeptical readers are compelled to check that the numerically-sampled posterior is identical to the analytically-derived posterior listed in the exercises.
 
3
This section can be skipped the first time through.
 
4
This section can be skipped the first time through.
 
Literature
go back to reference F. Feroz, M. P. Hobson, and M. Bridges. MULTINEST: an efficient and robust Bayesian inference tool for cosmology and particle physics. Monthly Notices of the Royal Astronomical Society, 398:1601–1614, 2009.CrossRef F. Feroz, M. P. Hobson, and M. Bridges. MULTINEST: an efficient and robust Bayesian inference tool for cosmology and particle physics. Monthly Notices of the Royal Astronomical Society, 398:1601–1614, 2009.CrossRef
go back to reference M. Plummer. JAGS Version 2.2.0 user manual, 2010. M. Plummer. JAGS Version 2.2.0 user manual, 2010.
go back to reference M. Plummer, N. Best, K. Cowles, and K. Vines. CODA: convergence diagnosis and output analysis for MCMC. R News, 6:7–11, 2006. M. Plummer, N. Best, K. Cowles, and K. Vines. CODA: convergence diagnosis and output analysis for MCMC. R News, 6:7–11, 2006.
go back to reference P. Schechter. An analytic expression for the luminosity function for galaxies. The Astrophysical Journal, 203:297–306, 1976.CrossRef P. Schechter. An analytic expression for the luminosity function for galaxies. The Astrophysical Journal, 203:297–306, 1976.CrossRef
Metadata
Title
A Bit of Numerical Computation
Authors
Stefano Andreon
Brian Weaver
Copyright Year
2015
DOI
https://doi.org/10.1007/978-3-319-15287-5_3

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