edgecovages-ergmTerm-8222522a: Weighted sum of ages of extant ties

edgecov.ages-ergmTermR Documentation

Weighted sum of ages of extant ties


Weighted sum of ages of extant ties


# binary: edgecov.ages(x, attrname=NULL)


x, attrname

either a square matrix of covariates, one for each possible edge in the network, the name of a network attribute of covariates, or a network; if the latter, or if the network attribute named by x is itself a network, optional argument attrname provides the name of the quantitative edge attribute to use for covariate values (in this case, missing edges in x are assigned a covariate value of zero).


This term adds one statistic equaling sum, over all ties present in the network, of the amount of time elapsed since formation, multiplied by a dyadic covariate.

"Weights" can be negative.

Unlike edgecov.mean.age , this statistic is well-defined on an empty network. However, if used as a target, it appears to produce highly biased dissolution parameter estimates if the goal is to get an intended average duration.

See Also

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

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

tergm documentation built on May 31, 2023, 8:29 p.m.