Policies are widely used in modern systems and applications. Recently, it has been recognized that simple decisions are just not enough for many systems and applications. Many policies require actions to be performed after a decision is made in accordance with the policy. To address this need, this paper studies the notions of obligations, which are those conditions or actions that must be ful- filled by either the users or the system after the decision. This paper forrealizes the obligations and investigates mechanisms for monitoring obligations. Especially, the paper discusses various aspects of how the system may compensate unfulfilled obligations
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