Howey, R. and Long, D. (2003) Validating plans with continuous effects. In: 22nd Workshop of the UK Planning and Scheduling Special Interest Group, 2003-12-09 - 2003-12-10, Glasgow.
A critical element in the use of PDDL2.1, the modelling language developed for the International Planning Competition series, has been the common understanding of the semantics of the language. The fact that this has been implemented in plan validation software was vital to the progress of the competition. However, the validation of plans using actions with continuous effects presents new challenges (that precede the challenges presented by planning with those effects). In this paper we review the need for continuous effects, their semantics and the problems that arise in validation of plans that include them. We report our progress in implementing the semantics in an extended version of the plan validation software.
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