期刊
ARTIFICIAL INTELLIGENCE
卷 143, 期 2, 页码 151-188出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0004-3702(02)00362-4
关键词
scheduling; AI planning; constraint programming; cumulative resources
This paper summarizes the main existing approaches to propagate resource constraints in Constraint-Based scheduling and identifies some of their limitations for using them in an integrated planning and scheduling framework. We then describe two new algorithms to propagate resource constraints on discrete resources and reservoirs. Unlike most of the classical work in scheduling, our algorithms focus on the precedence relations between activities rather than on their absolute position in time. They are efficient even when the set of activities is not completely defined and when the time window of activities is large. These features explain why our algorithms are particularly suited for integrated planning and scheduling approaches. All our algorithms are illustrated with examples. Encouraging preliminary results are reported on pure scheduling problems as well as some possible extensions of our framework. (C) 2002 Elsevier Science B.V. All rights reserved.
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