F-ergmTerm

InitErgmTerm.F

Evaluates the given <code>formula</code> on a network constructed by
taking $y$ and removing any edges for which
$f_{i,j}(y_{i,j}) = 0$ .

An integrated set of tools to analyze and simulate networks based on exponential-family random graph models (ERGMs). 'ergm' is a part of the Statnet suite of packages for network analysis. See Hunter, Handcock, Butts, Goodreau, and Morris (2008) <doi:10.18637/jss.v024.i03> and Krivitsky, Hunter, Morris, and Klumb (2023) <doi:10.18637/jss.v105.i06>.

Pavel N. Krivitsky

ergm

Fit, Simulate and Diagnose Exponential-Family Models for
Networks

Martina Morris

Li Wang

Kirk Li

Skye Bender-deMoll

Chad Klumb

Michał  Bojanowski

Ben Bolker

Christian Schmid

Joyce Cheng

Arya Karami

Adrien Le Guillou

F-ergmTerm function

<dl><dt>formula</dt>
<dd>a one-sided <code>ergm()</code>-style formula with the terms to be evaluated</dd>
<dt>filter</dt>
<dd>must contain one binary <code>ergm</code> term, with
the following properties:<ul>
<li>dyadic independence;</li>
<li>dyadwise contribution of 0 for a 0-valued dyad.</li>
</ul></dd>Formally, this means that it is expressable as
$$g(y) = \sum_{i,j} f_{i,j}(y_{i,j}),$$ where for all $i$, $j$, and $y$,
$f_{i,j}(y_{i,j})$ for which $f_{i,j}(0)=0$.
For convenience, the term in specified can be a part of a simple logical or comparison operation: (e.g., <code>~!nodematch("A")</code> or <code>~abs("X")&gt;3</code>),
which filters on $f_{i,j}(y_{i,j}) \bigcirc 0$ instead.</dl>

Arguments

Filtering on arbitrary one-term model — F-ergmTerm

<dl>

<dt>formula</dt>
<dd>a one-sided <code>ergm()</code>-style formula with the terms to be evaluated</dd>


<dt>filter</dt>
<dd>must contain one binary <code>ergm</code> term, with
the following properties:<ul>
<li>dyadic independence;</li>
<li>dyadwise contribution of 0 for a 0-valued dyad.</li>
</ul>

Formally, this means that it is expressable as
$$g(y) = \sum_{i,j} f_{i,j}(y_{i,j}),$$ where for all $i$, $j$, and $y$,
$f_{i,j}(y_{i,j})$ for which $f_{i,j}(0)=0$.
For convenience, the term in specified can be a part of a simple logical or comparison operation: (e.g., <code>~!nodematch("A")</code> or <code>~abs("X")&gt;3</code>),
which filters on $f_{i,j}(y_{i,j}) \bigcirc 0$ instead.</dd>

</dl>

Filtering on arbitrary one-term model

F-ergmTerm: Filtering on arbitrary one-term model

Description

Usage

Arguments

See Also