Abstracting Probabilistic Actions
Peter Haddawy, AnHai Doan
This paper discusses the problem of abstracting conditional probabilistic actions. We identify two distinct types of abstraction: intra-action abstraction and inter-action abstraction. We define what it means for the abstraction of an action to be correct and then derive two methods of intra-action abstraction and two methods of inter-action abstraction which are correct according to this criterion. We illustrate the developed techniques by applying them to actions described with the temporal action representation used in the DRIPS decision-theoretic planner and we describe how the planner uses abstraction to reduce the complexity of planning.
Keywords: Abstraction, action, planning, probability.
PS Link: ftp://ftp.cs.uwm.edu/pub/tech_reports/ai/haddawy-UAI94-abs.ps.Z
PDF Link: /papers/94/p270-haddawy.pdf
AUTHOR = "Peter Haddawy
and AnHai Doan",
TITLE = "Abstracting Probabilistic Actions",
BOOKTITLE = "Proceedings of the Tenth Conference Annual Conference on Uncertainty in Artificial Intelligence (UAI-94)",
PUBLISHER = "Morgan Kaufmann",
ADDRESS = "San Francisco, CA",
YEAR = "1994",
PAGES = "270--277"