Uncertainty in Artificial Intelligence
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Quasi-Bayesian Strategies for Efficient Plan Generation: Application to the Planning to Observe Problem
Fabio Cozman, Eric Krotkov
Abstract:
Quasi-Bayesian theory uses convex sets of probability distributions and expected loss to represent preferences about plans. The theory focuses on decision robustness, i.e., the extent to which plans are affected by deviations in subjective assessments of probability. The present work presents solutions for plan generation when robustness of probability assessments must be included: plans contain information about the robustness of certain actions. The surprising result is that some problems can be solved faster in the Quasi-Bayesian framework than within usual Bayesian theory. We investigate this on the planning to observe problem, i.e., an agent must decide whether to take new observations or not. The fundamental question is: How, and how much, to search for a “best” plan, based on the robustness of probability assessments? Plan generation algorithms are derived in the context of material classification with an acoustic robotic probe. A package that constructs Quasi-Bayesian plans is available through anonymous ftp.
Keywords: Convex sets of probability, robust statistics, expected loss (utility) theory, Marko
Pages: 186-193
PS Link: http://www/cs/cmu/edu/~fgcozman/Research/SequentialDecisions/CUAI96/cuai96.ps.gz
PDF Link: /papers/96/p186-cozman.pdf
BibTex:
@INPROCEEDINGS{Cozman96,
AUTHOR = "Fabio Cozman and Eric Krotkov",
TITLE = "Quasi-Bayesian Strategies for Efficient Plan Generation: Application to the Planning to Observe Problem",
BOOKTITLE = "Proceedings of the Twelfth Conference Annual Conference on Uncertainty in Artificial Intelligence (UAI-96)",
PUBLISHER = "Morgan Kaufmann",
ADDRESS = "San Francisco, CA",
YEAR = "1996",
PAGES = "186--193"
}


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