dc.contributor.author |
Aslanyan, G |
en |
dc.contributor.author |
Easther, Richard |
en |
dc.contributor.author |
Musoke, Nathan |
en |
dc.contributor.author |
Price, LC |
en |
dc.date.accessioned |
2020-06-05T03:04:02Z |
en |
dc.date.issued |
2020-04-24 |
en |
dc.identifier.citation |
Arxiv (2004.11929v1). 24 Apr 2020. 5 pages |
en |
dc.identifier.uri |
http://hdl.handle.net/2292/51354 |
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dc.description.abstract |
Scientific analyses often rely on slow, but accurate forward models for observable data conditioned on known model parameters. While various emulation schemes exist to approximate these slow calculations, these approaches are only safe if the approximations are well understood and controlled. This workshop submission reviews and updates a previously published method, which has been used in cosmological simulations, to (1) train an emulator while simultaneously estimating posterior probabilities with MCMC and (2) explicitly propagate the emulation error into errors on the posterior probabilities for model parameters. We demonstrate how these techniques can be applied to quickly estimate posterior distributions for parameters of the $\Lambda$CDM cosmology model, while also gauging the robustness of the emulator approximation. |
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dc.relation.ispartof |
Arxiv |
en |
dc.rights |
Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. |
en |
dc.rights.uri |
https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm |
en |
dc.rights.uri |
https://arxiv.org/licenses/nonexclusive-distrib/1.0/license.html |
en |
dc.subject |
astro-ph.IM |
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dc.subject |
astro-ph.IM |
en |
dc.subject |
astro-ph.CO |
en |
dc.subject |
cs.LG |
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dc.subject |
stat.ML |
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dc.title |
Robust posterior inference when statistically emulating forward simulations |
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dc.type |
Report |
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dc.rights.holder |
Copyright: The author |
en |
pubs.author-url |
http://arxiv.org/abs/2004.11929v1 |
en |
dc.rights.accessrights |
http://purl.org/eprint/accessRights/OpenAccess |
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pubs.subtype |
Working Paper |
en |
pubs.elements-id |
800892 |
en |
pubs.org-id |
Science |
en |
pubs.org-id |
Physics |
en |
pubs.arxiv-id |
2004.11929 |
en |
pubs.number |
2004.11929v1 |
en |
pubs.record-created-at-source-date |
2020-06-05 |
en |