Nested sampling cross-checks using order statistics
Nested sampling cross-checks using order statistics
复制标题
使用顺序统计进行嵌套抽样交叉检查
DOI:
10.1093/mnras/staa2345
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发表时间:
2020
影响因子:
4.8
通讯作者:
Fowlie A
中科院分区:
文献类型:
--
作者:
Fowlie A
Nested sampling (NS) is an invaluable tool in data analysis in modern astrophysics, cosmology, gravitational wave astronomy, and particle physics. We identify a previously unused property of NS related to order statistics: the insertion indexes of new live points into the existing live points should be uniformly distributed. This observation enabled us to create a novel cross-check of single NS runs. The tests can detect when an NS run failed to sample new live points from the constrained prior and plateaus in the likelihood function, which break an assumption of NS and thus leads to unreliable results. We applied our cross-check to NS runs on toy functions with known analytic results in 2–50 dimensions, showing that our approach can detect problematic runs on a variety of likelihoods, settings, and dimensions. As an example of a realistic application, we cross-checked NS runs performed in the context of cosmological model selection. Since the cross-check is simple, we recommend that it become a mandatory test for every applicable NS run.
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影响因子:
4.4
作者:
Nielsen, Steven O.
通讯作者:
Nielsen, Steven O.
DOI:
--
发表时间:
2018-05
期刊:
arXiv: Computation
影响因子:
--
作者:
R. Salomone;Leah F. South;A. M. Johansen;C. Drovandi;Dirk P. Kroese
通讯作者:
R. Salomone;Leah F. South;A. M. Johansen;C. Drovandi;Dirk P. Kroese
DOI:
10.1093/bioinformatics/btu675
发表时间:
2015-02-15
期刊:
Bioinformatics (Oxford, England)
影响因子:
--
作者:
Johnson R;Kirk P;Stumpf MP
通讯作者:
Stumpf MP
DOI:
10.1111/j.1745-3933.2007.00306.x
发表时间:
2007-05-01
影响因子:
4.8
作者:
Liddle, Andrew R.
通讯作者:
Liddle, Andrew R.
影响因子:
--
作者:
Will Handley
通讯作者:
Will Handley