Symmetrize-ergmTerm-61cab8ac: Evaluation on symmetrized (undirected) network

In ergm: Fit, Simulate and Diagnose Exponential-Family Models for Networks

Evaluation on symmetrized (undirected) network

Description

Evaluates the terms in formula on an undirected network constructed by symmetrizing the LHS network using one of four rules:

1. "weak"/"max" A tie (i,j) is present in the constructed network if the LHS network has either tie (i,j) or (j,i) (or both). For a valued network, the maximum is used.

2. "strong"/"min" A tie (i,j) is present in the constructed network if the LHS network has both tie (i,j) and tie (j,i). For a valued network, the minimum is used.

3. "upper" A tie (i,j) is present in the constructed network if the LHS network has tie (\min(i,j),\max(i,j)) : the upper triangle of the LHS network.

4. "lower" A tie (i,j) is present in the constructed network if the LHS network has tie (\max(i,j),\min(i,j)) : the lower triangle of the LHS network.

Usage

# binary: Symmetrize(formula, rule="weak")

# valued: Symmetrize(formula, rule="weak")

Arguments

formula	a one-sided ergm()-style formula with the terms to be evaluated
rule	one of "weak", "strong", "upper", "lower", "max", or "min"

See Also

ergmTerm for index of model terms currently visible to the package.

\Sexpr[results=rd,stage=render]{ergm:::.formatTermKeywords("ergmTerm", "Symmetrize", "subsection")}

ergm documentation built on Aug. 27, 2025, 9:08 a.m.