Situation Based Dynamic Planning for Dialog Support with Hierarchical Knowledge

Every conversation has its own goal, which is changed depending on the situation. The dialog supporting system should recognize the changes and react to them. In order to help in implementing this system, we propose a model of dynamic planning based on the situation. In order to achieve the separation of concerns, the system architecture is structured in three tiers. For describing the situation and finding its relevant plan to get to the goal state, knowledge is employed. The knowledge is constructed in three layers of cooperation, situation based planning, and domain description. With these knowledge hierarchy and loosely coupling architecture, this model can be easily adapted to other domains.