Titlebook: Generating Abstraction Hierarchies; An Automated Approac Craig A. Knoblock Book 1993 Springer Science+Business Media New York 1993 STRIPS.a

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Introduction,ing of which parts of a problem are more difficult and should therefore be solved first. This can result in a significant amount of wasted effort since a problem solver will spend time solving the details only to have to discard the solutions in the process of solving the more difficult aspects. Eve

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Hierarchical Problem Solving,ects of a problem first. Most of these problem solvers employ one of three types of abstractions: abstract problem spaces, abstract operators, or macro problem spaces. These three approaches are briefly described below and then compared in more detail in Chapter 6.

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Empirical Results, the hierarchical version of .. The chapter is divided into four sections. The first section demonstrates empirically, in the Tower of Hanoi, that abstraction can produce an exponential-to-linear reduction in search. The second section describes empirical results in several more complex domains to s

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Related Work,ion that are most closely related to the one described in this book. The second section compares the approach implemented in . for generating abstractions to other related techniques. The third section describes the related work on properties of abstractions.