Details about ROXY

CategoryInformation
PurposeROXY (Regression and Optimisation with X and Y errors) is a python package for performing MCMC where the data have both x and y errors. The common approach for this problem is to use a Gaussian likelihood with a mean given by f(x_{obs}, \theta) and a variance \sigma_y^2 + f'(x_{obs}, \theta)^2 \sigma_x^2, but this ignores the underlying distribution of true x values and thus gives biased results. Instead, this package allows one to use the MNR (Marginalised Normal Regression) method which does not exhibit such biases.
Related community
Action Dark Energy
Tool typeSoftware
URLhttps://github.com/DeaglanBartlett/roxy
Documentationhttps://roxy.readthedocs.io/en/latest/?badge=latest
Author Deaglan Bartlett
Publication:
LanguagePython 3.x
Keywords
  • MCMC
  • Regression

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