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

Uložené v:
Podrobná bibliografia
Vydané v:Monthly notices of the Royal Astronomical Society Ročník 453; číslo 4; s. 4384 - 4398
Hlavní autori: Handley, W. J., Hobson, M. P., Lasenby, A. N.
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: London Oxford University Press 11.11.2015
Predmet:
Algorithms
Astronomy
Computation
Cosmology
Downloading
Evolution
Hierarchies
Parallel processing
Sampling
methods: statistical
methods: data analysis
ISSN:0035-8711, 1365-2966
On-line prístup:Získať plný text
Tagy: Pridať tag
Žiadne tagy, Buďte prvý, kto otaguje tento záznam!
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/.
Bibliografia: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