R: Testing for curved exponential family

is.curved {ergm}

R Documentation

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.

[Package ergm version 3.10.4 Index]