Before revision:  Such information is used to calibrate a directed configuration model which can generate ensembles of  networks intended to represent the real system, so that the real network properties can be estimated within the generated ensemblein terms of mean values of the observables .
After revision:  This information is used to calibrate a directed configuration model which can generate ensembles of networks intended to represent the real system, so that the real network properties can be estimated within the generated ensemblein terms of mean values of the observables .