  Norms with sanctions have been widely employed as a mechanism for controlling
and coordinating the behavior of agents without limiting their autonomy. The
norms enforced in a multi-agent system can be revised in order to increase the
likelihood that desirable system properties are fulfilled or that system
performance is sufficiently high. In this paper, we provide a preliminary
analysis of some types of norm revision: relaxation and strengthening.
Furthermore, with the help of some illustrative scenarios, we show the
usefulness of norm revision for better satisfying the overall system
objectives.
