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Durham Research Online
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Galaxy formation : Bayesian history matching for the observable universe.

Vernon, Ian and Goldstein, Michael and Bower, Richard (2014) 'Galaxy formation : Bayesian history matching for the observable universe.', Statistical science., 29 (1). pp. 81-90.

Abstract

Cosmologists at the Institute of Computational Cosmology, Durham University, have developed a state of the art model of galaxy formation known as Galform, intended to contribute to our understanding of the formation, growth and subsequent evolution of galaxies in the presence of dark matter. Galform requires the specification of many input parameters and takes a significant time to complete one simulation, making comparison between the model’s output and real observations of the Universe extremely challenging. This paper concerns the analysis of this problem using Bayesian emulation within an iterative history matching strategy, and represents the most detailed uncertainty analysis of a galaxy formation simulation yet performed.

Item Type:Article
Keywords:Computer models, Bayesian statistics, History matching, Bayes linear, Emulation, Galaxy formation.
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Status:Peer-reviewed
Publisher Web site:http://dx.doi.org/10.1214/12-STS412
Date accepted:No date available
Date deposited:13 April 2015
Date of first online publication:09 May 2014
Date first made open access:No date available

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