Title
Fault Tolerant Planning: Toward Probabilistic Uncertainty Models in Symbolic Non-Deterministic Planning
Abstract
Symbolic non-deterministic planning represents action ef- fects as sets of possible next states. In this paper, we move toward a more probabilistic uncertainty model by distinguish- ing between likely primary effects and unlikely secondary ef- fects of actions. We consider the practically important case where secondary effects are failures, and introduce n-fault tolerant plans that are robust for up to n faults occurring dur- ing plan execution. Fault tolerant plans are more restrictive than weak plans, but more relaxed than strong cyclic and strong plans. We show that optimal n-fault tolerant plans can be generated by the usual strong algorithm. However, due to non-local error states, it is often benecial to decouple the planning for primary and secondary effects. We employ this approach for two specialized algorithms 1-FTP (blind) and 1-GFTP (guided) and demonstrate their advantages experi- mentally in signicant real-world domains.
Year
Venue
DocType
2004
ICAPS
Conference
Citations 
PageRank 
References 
16
0.71
26
Authors
3
Name
Order
Citations
PageRank
Rune M. Jensen11749.27
Manuela Veloso28563882.50
Randal E. Bryant392041194.64