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Extending landmarks analysis to reason about resources and repetition

Porteous, J. and Cresswell, S. (2002) Extending landmarks analysis to reason about resources and repetition. In: Proceedings of the 21st Workshop of the UK Planning and Scheduling Special Interest Group (PLANSIG '02), 2002-11-21 - 2002-11-22.

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The identification of important planning subgoals, referred to as landmarks, has been shown to be useful in speeding up plan generation in a number of different planning architec- tures [8]. Here, we report on work in progress to extend some features of this domain analysis using landmarks. In particular we consider: the extraction of resource abstracted landmarks; and the identification of landmark repetition along with a count of the minimum number of times a landmark will need to be repeated. We illustrate our ideas with an example from a benchmark domain and consider ways in which this information could be exploited at plan time.