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Extending Graphplan to handle uncertainty and sensing actions

Published: 01 July 1998 Publication History

Abstract

If an agent does not have complete information about the world-state, it must reason about alternative possible states of the world and consider whether any of its actions can reduce the uncertainty. Agents controlled by a contingent planner seek to generate a robust plan, that accounts for and handles all eventualities, in advance of execution. Thus a contingent plan may include sensing actions which gather information that is later used to select between different plan branches. Unfortunately, previous contingent planners suffered defects such as confused semantics, incompleteness, and inefficiency. In this paper we describe SGP, a descendant of Graphplan that solves contingent planning problems. SGP distinguishes between actions that sense the value of an unknown proposition from those that change its value. SGP does not suffer from the forms of incompleteness displayed by CNLP and Cassandra. Furthermore, SGP is relatively fast.

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Published In

cover image Guide Proceedings
AAAI '98/IAAI '98: Proceedings of the fifteenth national/tenth conference on Artificial intelligence/Innovative applications of artificial intelligence
July 1998
1218 pages
ISBN:0262510987

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American Association for Artificial Intelligence

United States

Publication History

Published: 01 July 1998

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  • (2011)A performance and usability comparison of automated planners for IT change planningProceedings of the 7th International Conference on Network and Services Management10.5555/2147671.2147694(143-151)Online publication date: 24-Oct-2011
  • (2010)Active learning of plans for safety and reachability goals with partial observabilityIEEE Transactions on Systems, Man, and Cybernetics, Part B: Cybernetics10.1109/TSMCB.2009.202565740:2(412-420)Online publication date: 1-Apr-2010
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