Agent dialogue strategy based on priority of goals

In multi agent systems, agents interact with each other through a dialogue protocol to inform each other the relevant facts in order to reach the common goals. In a dialogue the protocol defines the possible replies for a presented speech act and the strategy specifies which speech act is premier. The strategy defines how to achieve the agents´ goals by choosing the best one among all choices. Compared with researches on dialogue protocol, there are few works on dialogue strategy. We proposed a formal model for dialogue strategy in order to select the best speech act and the proper content. This model in each step of dialogue can decide the appropriate act and content allowed by the dialogue protocol in order to satisfy the agents´ goals. This model computes the priority of possible acts and contents using argumentation theory. The proposed model is illustrated through a common example of deliberation dialogue.