mm-ergmTerm-0264ed3f: Mixing matrix cells and margins

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

Mixing matrix cells and margins

Description

attrs is the rows of the mixing matrix and whose RHS gives that for its columns (which may be different). A one-sided formula (e.g., ~A ) is symmetrized (e.g., A~A ). A two-sided formula with a dot on one side calculates the margins of the mixing matrix, analogously to nodefactor , with A~. calculating the row/sender/b1 margins and .~A calculating the column/receiver/b2 margins. If row and column attributes are the same and the network is undirected, only the cells at or above the diagonal (where \text{row} \le \text{column}) will be calculated.

Usage

# binary: mm(attrs, levels=NULL, levels2=-1)

# valued: mm(attrs, levels=NULL, levels2=-1, form="sum")

Arguments

attrs	a two-sided formula whose LHS gives the attribute or attribute function (see Specifying Vertex attributes and Levels (?nodal_attributes) for details.) for the rows of the mixing matrix and whose RHS gives for its columns. A one-sided formula (e.g., ~A) is symmetrized (e.g., A~A)
levels	subset of rows and columns to be used. (See Specifying Vertex attributes and Levels (?nodal_attributes) for details.)
levels2	which specific cells of the matrix to include; ?nodal_attributes for details
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.

See Also

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

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