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is.curved

Testing for curved exponential family

Description

These functions test whether an ERGM fit, formula, or some other object represents a curved exponential family.

The method for NULL always returns FALSE by convention.

Usage

is.curved(object, ...)

## S3 method for class ''NULL''
is.curved(object, ...)

## S3 method for class 'formula'
is.curved(object, response = NULL, basis = NULL, ...)

## S3 method for class 'ergm'
is.curved(object, ...)

Arguments

object

An ergm object or an ERGM formula.
...

Arguments passed on to lower-level functions.
response

Name of the edge attribute whose value is to be modeled in the valued ERGM framework. Defaults to NULL for simple presence or absence, modeled via a binary ERGM.
basis

See ergm().

Details

Curvature is checked by testing if all model parameters are canonical.

Value

TRUE if the object represents a curved exponential family; FALSE otherwise.

ergm

Fit, Simulate and Diagnose Exponential-Family Models for Networks

v3.11.0
GPL-3 + file LICENSE
Authors
Mark S. Handcock [aut], David R. Hunter [aut], Carter T. Butts [aut], Steven M. Goodreau [aut], Pavel N. Krivitsky [aut, cre] (<https://orcid.org/0000-0002-9101-3362>), Martina Morris [aut], Li Wang [ctb], Kirk Li [ctb], Skye Bender-deMoll [ctb], Chad Klumb [ctb], Michał Bojanowski [ctb], Ben Bolker [ctb]
Initial release
2020-10-14

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