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Abstract:
Planning for the real world requires the ability to sense and reason about an arbitrary number of entities and relations that are not known in advance. However, most satisfaction-based planning systems only reason about a fixed number of given unique fiuents. This article presents the planning model of the constraintbased EXCALIBUR agent’s planning system. The model is based on structural constraint satisfaction, which makes it possible to use arbitrary plan structures and to handle open world planning.