Inverse Beta: Inverse cumulative density function (CDF) of a

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kcd
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Inverse Beta: Inverse cumulative density function (CDF) of a Beta distribution

Post by kcd » Sat Mar 08, 2014 6:37 am

Inverse Beta: Inverse cumulative density function (CDF) of a Beta distribution

Abstract: The Beta Inverse code solves the inverse cumulative density function (CDF) of a Beta distribution, allowing one to sample from the Beta prior directly. The Beta distribution is well suited as a prior for the distribution of the orbital eccentricities of extrasolar planets; imposing a Beta prior on orbital eccentricity is valuable for any type of observation of an exoplanet where eccentricity can affect the model parameters (e.g. transits, radial velocities, microlensing, direct imaging). The Beta prior is an excellent description of the current, empirically determined distribution of orbital eccentricities and thus employing it naturally incorporates an observer’s prior experience of what types of orbits are probable or improbable. The default parameters in the code are currently set to the Beta distribution which best describes the entire population of exoplanets with well-constrained orbits.

Credit: Kipping, David

Site: https://github.com/davidkipping/inversebeta
http://adsabs.harvard.edu/abs/2013MNRAS.434L..51K

Bibcode: 2014ascl.soft03010K

ID: ascl:1403.010
Last edited by Ada Coda on Sun Jan 08, 2017 2:50 pm, edited 1 time in total.
Reason: Updated code entry.

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