# control.ergm.ego: Control parameters for 'ergm.ego'. In statnet/ergm.ego: Fit, Simulate and Diagnose Exponential-Family Random Graph Models to Egocentrically Sampled Network Data

## Description

Constructs and checks the list of control parameters for estimation by ergm.ego.

## Usage

  1 2 3 4 5 6 7 8 9 10 11 control.ergm.ego( ppopsize = c("auto", "samp", "pop"), ppopsize.mul = 1, ppop.wt = c("round", "sample"), stats.wt = c("data", "ppop"), stats.est = c("survey", "asymptotic", "bootstrap", "jackknife", "naive"), boot.R = 10000, ignore.max.alters = FALSE, ergm = control.ergm(), ... ) 

## Arguments

 ppopsize, ppopsize.mul Parameters to determine the size |N'| of the pseudopopulation network. ppopsize can be "auto"If the popsize (|N|) argument is specified and is different from 1, as if "pop"; otherwise, as "samp". "samp"set |N'| based on the sample size: |N'|=|S| \times \code{popsize.mul} "pop"set |N'| based on the population size: |N'|=|N| \times \code{popsize.mul} a numberset |N'| directly (popsize.mul ignored) a network objectuse the specified network as the pseudo-population network directly; use at your own risk a data frameuse the specified data frame as the pseudo-population; use at your own risk The default is to use the same pseudopopulation size as the sample size, but, particularly if there are sampling weights in the data, it should be bigger. Note that depending on ppop.wt, this may only be an approximate target specification, with the actual constructed pseudopopulation network being slightly bigger or smaller. ppop.wt Because each ego must be represented in the pseuodopopulation network an integral number of times, if the sample is weighted (or the target |N'| calculated from ppopsize and ppopsize.mul is not a multiple of the sample size), it may not be possible, for a finite |N'| to represent each ego exactly according to its relative weight, and ppop.wt controls how the fractional egos are allocated: "round"(default) Rather than treating ppopsize as a hard setting, calculate |N'| w_i / w_\cdot for each ego i and round it to the nearest integer. Then, the |N'| actually used will be the sum of these rounded freqencies. "sample"Resample in proportion to w_i. stats.wt Weight assigned to each ego's contribution to the ERGM's sufficient statistic: "data"(default) Use weights |N'| w_i / w_\cdot for each ego i as in the data. "ppop"Use weights ultimately used in the pseudopopulation network. stats.est, boot.R Method to be used to estimate the ERGM's sufficient statistics and their variance: "survey"Variance estimator returned by survey::svymean(), appropriate to the design of the dataset. "asymptotic"Delta method, as derived by Krivitsky and Morris (2015), assuming the ego weights are sampled alongside the egos. (default)Delta method, as derived by Krivitsky and Morris (2015), assuming the ego weights are sampled alongside the egos. "bootstrap"Nonparametric bootstrap with bias correction, resampling egos, using R replications. "jackknife"Jackknife with bias correction. "naive""Naive" estimator, assuming that weights are fixed. ignore.max.alters if TRUE, ignores any constraints on the number of nominations. ergm Control parameters for the ergm call to fit the model, constructed by control.ergm. ... Not used at this time.

## Value

A list with arguments as components.

## Author(s)

Pavel N. Krivitsky

## References

Pavel N. Krivitsky and Martina Morris. Inference for Social Network Models from Egocentrically-Sampled Data, with Application to Understanding Persistent Racial Disparities in HIV Prevalence in the US. Thechnical Report. National Institute for Applied Statistics Research Australia, University of Wollongong, 2015(05-15). http://niasra.uow.edu.au/publications/UOW190187.html