idigamma

Ddigamma

Dtrigamma

gammap

This set of functions revolve around the polygamma functions.

Implements estimation methods for parameters of common
distribution families. The common d, p, q, r function family for each
distribution is enriched with the ll, e, and v counterparts, computing
the log-likelihood, performing estimation, and calculating the asymptotic
variance - covariance matrix, respectively. Parameter estimation is
performed analytically whenever possible.

Ioannis Oikonomidis

estimators

Parameter Estimation

Samis Trevezas

idigamma function

<dl><dt>x, y</dt>
<dd>numeric. The points to evaluate the function.</dd>
<dt>p</dt>
<dd>integer. The p-variate Gamma function.</dd>
<dt>log</dt>
<dd>logical. Should the logarithm of the result be returned?</dd></dl>

Arguments

<ul>
<li><code>idigamma()</code>: inverse digamma function.</li>
<li><code>Ddigamma()</code>: digamma difference function.</li>
<li><code>Dtrigamma()</code>: trigamma difference function.</li>
<li><code>gammap()</code>: p-variate gamma function</li>
</ul>

Functions

Polygamma Functions — idigamma

<dl>

<dt>x, y</dt>
<dd>numeric. The points to evaluate the function.</dd>


<dt>p</dt>
<dd>integer. The p-variate Gamma function.</dd>


<dt>log</dt>
<dd>logical. Should the logarithm of the result be returned?</dd>

</dl>

idigamma: Polygamma Functions

Description

Usage

Value

Arguments

Functions

See Also

Examples