inverse_digamma: Inverse digamma function
In univariateML: Maximum Likelihood Estimation for Univariate Densities
inverse_digamma R Documentation
Inverse digamma function
Description
Calculates the inverse digamma function using Newton–Raphson. Works for
y > -500. Uses Newton–Raphson with relative tolerance of eps^0.25.
Usage
inverse_digamma(y)
Arguments
y
Values to invert.
Details
The number of iterations are few, 1 for most input values, especially those
that are large. The starting value is the lower bound found by Batir (2017).
References
Batir, N. (2017). Inequalities for the inverses of the polygamma functions. arXiv. http://arxiv.org/abs/1705.06547
univariateML documentation built on April 3, 2025, 11:09 p.m.
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| inverse_digamma | R Documentation |
Inverse digamma function
Description
Calculates the inverse digamma function using Newton–Raphson. Works for y > -500. Uses Newton–Raphson with relative tolerance of eps^0.25.
Usage
inverse_digamma(y)
Arguments
y |
Values to invert. |
Details
The number of iterations are few, 1 for most input values, especially those that are large. The starting value is the lower bound found by Batir (2017).
References
Batir, N. (2017). Inequalities for the inverses of the polygamma functions. arXiv. http://arxiv.org/abs/1705.06547
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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