public override long[] getUserNeighborhood(long userID)
{
DataModel model = this.getDataModel();
TopItems.Estimator <long> estimator = new Estimator(this.getUserSimilarity(), userID, this.minSimilarity);
IEnumerator <long> allUserIDs = SamplingLongPrimitiveIterator.maybeWrapIterator(model.getUserIDs(), this.getSamplingRate());
return(TopItems.getTopUsers(this.n, allUserIDs, null, estimator));
}