R: Covariance of out-dyad values incident on each actor

nodeocovar-ergmTerm {ergm} | R Documentation

## Covariance of out-dyad values incident on each actor

### Description

This term adds one statistic equal to ∑_{i,j,k} y_{i,j}y_{i,k}/(n-2) . This can be viewed as a valued analog of the `ostar(2)` statistic.

### Usage

    # valued: nodeocovar(center, transform)

### Arguments

`center` | whether the y_{\cdot,\cdot} s are centered by their mean over the whole network before the calculation. Note that this makes the model non-local, but it may alleviate multimodailty.
`transform` | if `transform="sqrt"` , y_{\cdot,\cdot} s are repaced by their square roots before the calculation. This makes sense for counts in particular. If `center=TRUE` as well, they are centered by the mean of the square roots.

### Note

Note that this term replaces `nodeosqrtcovar` , which has been deprecated in favor of `nodeocovar(transform="sqrt")` .

### See Also

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

[Package ergm version 4.2.1 Index]