same {remstats}

same

Description

Specifies the statistic for a "same" effect in the tie-oriented model or the receiver choice step of the actor-oriented model. A "same" effect refers to an exogenous actor attribute that affects dyad (i,j)'s rate of interacting (tie-oriented model) or actor j's probability of being chosen as a receiver for the event send by the active sender i at time t (actor-oriented model) based on whether actors i and j have the same value (or not) on this attribute.

Usage

same(variable, attr_actors = NULL, attr_data)

Arguments

variable

string with the name of the column in the attr_actors object for which the statistic has to be computed.

attr_actors

optionally, an object of class data.frame that contains the attribute, see 'Details.'

attr_data

Deprecated argument. Please use 'attr_actors' instead.

Details

The statistic at timepoint t is equal to one for dyads (i,j) that have the same value on the attribute at timepoint t (tie-oriented model) or one for receivers j that have the same value on the attribute as the active sender i at timepoint t (actor-oriented model) and equal to 0 for dyads and receivers that do not have the same value.

Construct the 'attr_actors' object as a data frame where each row represents the attribute value of actor i at timepoint t:

• name: The actors' name.

• time: The time when the attribute values change.

• variable: The third column contains the attribute used in the specification of the "difference" effect. The column name should correspond to the string supplied to the variable argument in the 'difference()' function.

Note that it is possible to omit the 'attr_actors' object in the call of difference() and, instead, supply it in the call of remstats() for multiple exogenous effects.

Value

List with all information required by 'remstats::remstats()' to compute the statistic.

Examples

reh_tie <- remify::remify(history, model = "tie")
effects <- ~ same("age")
remstats(reh = reh_tie, tie_effects = effects, attr_actors = info)

reh_actor <- remify::remify(history, model = "actor")
remstats(reh = reh_actor, receiver_effects = effects, attr_actors = info)