absdiff-ergmTerm-9fc8de5a: Absolute difference in nodal attribute

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

Absolute difference in nodal attribute

Description

This term adds one network statistic to the model equaling the sum of abs(attr[i]-attr[j])^pow for all edges ⁠(i,j)⁠ in the network.

Usage

# binary: absdiff(attr,
#                 pow=1)

# valued: absdiff(attr,
#                 pow=1,
#                 form="sum")

Arguments

attr	a vertex attribute specification (see Specifying Vertex attributes and Levels (?nodal_attributes) for details.)
pow	power to which to take the absolute difference
form	how to aggregate tie values in a valued ERGM: "sum" (the default) for a statistic of the form \sum_{i,j} x_{i,j} y_{i,j}, where y_{i,j} is the value of dyad (i,j) and x_{i,j} is the term's covariate associated with it; and "nonzero" with the edge considered to be present if its value is not 0. See ergmTerm for more information.

Note

ergm versions 3.9.4 and earlier used different arguments for this term. See ergm-options for how to invoke the old behaviour.

See Also

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

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

statnet/ergm documentation built on Feb. 28, 2025, 7:05 p.m.