The electronic device of claim 32 wherein selecting a particular target value for the at least one service level attribute further comprises selecting a particular target value of the at least one service level attribute in dependence on the predicted future value for the service variable; wherein determining a realized value for the at least one service level attribute further comprises predicting a future realized value for the at least one service level attribute; and wherein comparing the particular target value for the at least one service level attribute with the realized value further comprises comparing the particular target value of the at least one service level attribute associated with the future value of the at least one service variable with the future realized value of the at least one service level attribute.