SIMBAD references

2012MNRAS.425.3077L - Mon. Not. R. Astron. Soc., 425, 3077-3084 (2012/October-1)

A sampling strategy for high-dimensional spaces applied to free-form gravitational lensing.

LUBINI M. and COLES J.

Abstract (from CDS):

We present a novel proposal strategy for the Metropolis-Hastings algorithm designed to efficiently sample general convex polytopes in 100 or more dimensions. This improves upon previous sampling strategies used for free-form reconstruction of gravitational lenses, but is general enough to be applied to other fields. We have written a parallel implementation within the lens modelling framework GLASS. Testing shows that we are able to produce uniform uncorrelated random samples which are necessary for exploring the degeneracies inherent in lens reconstruction.

Abstract Copyright: © 2012 The Authors Monthly Notices of the Royal Astronomical Society 2012 RAS

Journal keyword(s): :gravitational lensing: strong - methods: numerical - methods: statistical

Simbad objects: 1

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