distrhelpers

get_moment_methods

get_class_abbr

get_distr_class

s4_to_list

get_params

get_unknown_params

update_params

This set of functions help handle the distribution classes. See Details.

internal

Implements an S4 distribution system and 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

joker

Probability Distributions and Parameter Estimation

Samis Trevezas

distrhelpers function

<dl><dt>x, distr</dt>
<dd>an object of class <code>Distribution</code>.</dd>
<dt>list</dt>
<dd>logical. Should a list be returned? If <code>FALSE</code>, the return object
is wrapped in <code><a href="/link/unlist()?package=joker&version=0.14.2" data-mini-rdoc="joker::unlist()">unlist()</a></code>.</dd>
<dt>prm, i</dt>
<dd>A list containing three elements (<code>name</code>, <code>pos</code>, <code>val</code>) and the
i-th element of <code>val</code> to be updated as the new parameter. See
<code>small_metrics()</code>.</dd></dl>

Arguments

<ul>
<li><code>get_moment_methods()</code>: Returns a character vector with the available moment
methods for the distribution.</li>
<li><code>get_class_abbr()</code>: Turns the S4 class in the name (character) used in
the usual <code>stats</code> dpqr syntax.</li>
<li><code>get_distr_class()</code>: Turns the distribution name from a character to an
S4 class.</li>
<li><code>s4_to_list()</code>: Turns an S4 distr object to a list.</li>
<li><code>get_params()</code>: Get the parameters of a distribution as a list.</li>
<li><code>get_unknown_params()</code>: Get the unknown parameters of a distribution as a
list.</li>
<li><code>update_params()</code>: Update the distribution parameters. Returns the
distribution object. Used inside the <code>small_metrics()</code> and <code>large_metrics()</code>
functions.</li>
</ul>

Functions

Distribution Handling Helpers — distrhelpers

<dl>

<dt>x, distr</dt>
<dd>an object of class <code>Distribution</code>.</dd>


<dt>list</dt>
<dd>logical. Should a list be returned? If <code>FALSE</code>, the return object
is wrapped in <code><a href='https://rdrr.io/r/base/unlist.html'>unlist()</a></code>.</dd>


<dt>prm, i</dt>
<dd>A list containing three elements (<code>name</code>, <code>pos</code>, <code>val</code>) and the
i-th element of <code>val</code> to be updated as the new parameter. See
<code>small_metrics()</code>.</dd>

</dl>

distrhelpers: Distribution Handling Helpers

Description

Usage

Value

Arguments

Functions

See Also