PLANET: a shareable and reusable ontology for representing plans

Yolanda Gil and Jim Blythe
In proceedings of the AAAI workshop on representational issues for real-world planning systems, Austin, July 2000

Abstract

Ontologies are becoming a recognized vehicle for knowledge reuse, knowledge sharing, and modeling. This paper presents PLANET, an ontology for representing plans. To show that PLANET is a comprehensive ontology that can be reused to build new applications, we describe several specializations of it to represent plans in three different real-world domains that were made by adding minor extensions to PLANET's general definitions and classes. In past work, we have developed several plan evaluation systems in these domains, and have integrated them in several occasions with plan editors and plan generation systems. For each of these integrations, and often for each system in the integration, a new format for exchanging plans was devised. PLANET can represent all of the plans that we and others have used in these domains, providing a standard universal format for knowledge sharing that can be used as an interlingua in integrated planning applications. Finally, the paper discusses how we have used PLANET as a knowledge modelling tool to design representations for courses of action in a military domain, guiding us to make useful distinctions and modelling choices.

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Jim Blythe
Last modified: Sun Sep 10 04:20:02 PDT 2000