polychord

PolyChord is a Bayesian inference tool for the simultaneous calculation of evidences and sampling of posterior distributions. It is a variation of John Skilling’s Nested Sampling, utilising Slice Sampling to generate new live points. PolyChord is the natural successor to MultiNest. It performs well on moderately high dimensional ( 100s D) posterior distributions, and can cope with arbitrary degeneracies and multimodality.