Nested sampling with plateaus
نویسندگان
چکیده
ABSTRACT It was recently emphasized that in the presence of plateaus likelihood function nested sampling (NS) produces faulty estimates evidence and posterior densities. After informally explaining cause problem, we present a modified version NS handles can be applied retrospectively to runs from popular software using anesthetic. In NS, live points plateau are evicted one by without replacement, with ordinary compression prior volume after each eviction but taking into account dynamic number points. The replenished once all removed. We demonstrate it on examples. Since modification is simple, propose becomes canonical Skilling’s algorithm.
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2021
ISSN: ['0035-8711', '1365-8711', '1365-2966']
DOI: https://doi.org/10.1093/mnras/stab590