polychord: next-generation nested sampling

polychord is a novel nested sampling algorithm tailored for high-dimensional parameter spaces. This paper coincides with the release of polychord v1.6, and provides an extensive account of the algorithm. polychord utilizes slice sampling at each iteration to sample within the hard likelihood constra...

Celý popis

Uloženo v:
Podrobná bibliografie
Vydáno v:Monthly notices of the Royal Astronomical Society Ročník 453; číslo 4; s. 4384 - 4398
Hlavní autoři: Handley, W. J., Hobson, M. P., Lasenby, A. N.
Médium: Journal Article
Jazyk:angličtina
Vydáno: London Oxford University Press 11.11.2015
Témata:
Algorithms
Astronomy
Computation
Cosmology
Downloading
Evolution
Hierarchies
Parallel processing
Sampling
methods: statistical
methods: data analysis
ISSN:0035-8711, 1365-2966
On-line přístup:Získat plný text
Tagy: Přidat tag
Žádné tagy, Buďte první, kdo vytvoří štítek k tomuto záznamu!
Popis
Shrnutí:polychord is a novel nested sampling algorithm tailored for high-dimensional parameter spaces. This paper coincides with the release of polychord v1.6, and provides an extensive account of the algorithm. polychord utilizes slice sampling at each iteration to sample within the hard likelihood constraint of nested sampling. It can identify and evolve separate modes of a posterior semi-independently, and is parallelized using openmpi. It is capable of exploiting a hierarchy of parameter speeds such as those present in cosmomc and camb, and is now in use in the cosmochord and modechord codes. polychord is available for download from http://ccpforge.cse.rl.ac.uk/gf/project/polychord/.
Bibliografie:SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 14
ObjectType-Article-1
ObjectType-Feature-2
content type line 23
ISSN:0035-8711
1365-2966
DOI:10.1093/mnras/stv1911