remstats (version 3.2.4)

same: 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)

Value

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

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.

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)