Such robust rules recognize that data are measured imprecisely and are subject to revision. These robust rules typically indicate that policy should respond to changes in the gap between inflation and the inflation goal, and to changes in the deviation of output from a measure of potential output, or to changes in unemployment from the steady-state or the natural rate of unemployment.
Most robust rules suggest that the reaction to the changes in the inflation gap be more than one-for-one and should exceed the reaction to changes in the output or unemployment gap. The rules also suggest that policy should be somewhat inertial.