Distinguishing Propositional and Action Commitment in Agent Communication

Our goal is to extend agent communication lan- guages for persuasion dialogues. We distinguish action commitments from propositional commit- ments, because both limit future moves, but an action commitment is fulfilled when the hearer believes that the action is performed, whereas a propositional commitment is fulfilled only when the hearer concedes to the proposition – where con- cessions are the absence of a belief to the con- trary, and prevent further challenges. Using a com- mon model for both kind of commitments and a role-based semantics of agent communication lan- guages, we show how propositional commitments are related to public beliefs and action commit- ments to public goals