A. Jonsson (2009) "The Role of Macros in Tractable Planning", Volume 36, pages 471-511

PDF | PostScript | doi:10.1613/jair.2891

This paper presents several new tractability results for planning based on macros. We describe an algorithm that optimally solves planning problems in a class that we call inverted tree reducible, and is provably tractable for several subclasses of this class. By using macros to store partial plans that recur frequently in the solution, the algorithm is polynomial in time and space even for exponentially long plans. We generalize the inverted tree reducible class in several ways and describe modifications of the algorithm to deal with these new classes. Theoretical results are validated in experiments.

Click here to return to Volume 36 contents list