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MultiNest: an efficient and robust Bayesian inference tool for cosmology and particle physics

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Feroz, F., Hobson, M. P., Bridges, M.·2009·Monthly Notices of the Royal Astronomical Society

Abstract

We present further development and the first public release of our multimodal nested sampling algorithm, called MultiNest. This Bayesian inference tool calculates the evidence, with an associated error estimate, and produces posterior samples from distributions that may contain multiple modes and pronounced (curving) degeneracies in high dimensions. The developments presented here lead to further substantial improvements in sampling efficiency and robustness, as compared to the original algorithm presented in Feroz & Hobson (2008), which itself significantly outperformed existing MCMC techniques in a wide range of astrophysical inference problems. The accuracy and economy of the MultiNest algorithm is demonstrated by application to two toy problems and to a cosmological inference problem focussing on the extension of the vanilla $Λ$CDM model to include spatial curvature and a varying equation of state for dark energy. The MultiNest software, which is fully parallelized using MPI and includes an interface to CosmoMC, is available at http://www.mrao.cam.ac.uk/software/multinest/. It will also be released as part of the SuperBayeS package, for the analysis of supersymmetric theories of particle physics, at http://www.superbayes.org

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Metadata

Authors
Feroz, F., Hobson, M. P., & Bridges, M.
Venue
Monthly Notices of the Royal Astronomical Society
Published
2009-10-01
Volume
398
Issue
4
Pages
1601-1614
ISSN
  • 0035-8711 (ISSN-L)
  • 1365-2966
OpenAlex
W2092194717
Cited by
2,958
References
3
FWCI
32.80
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: MultiNest: an efficient and robust Bayesian inference tool for cosmology and particle physics. https://app.cochat.ai/papers/10.1111/j.1365-2966.2009.14548.x
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Feroz, F., Hobson, M. P., & Bridges, M. (2009). MultiNest: an efficient and robust Bayesian inference tool for cosmology and particle physics. Monthly Notices of the Royal Astronomical Society. https://doi.org/10.1111/j.1365-2966.2009.14548.x

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