Pivotal pruning of trade-offs in QPNs

Authors:
Silja Renooij;Linda C. van der Gaag;Simon Parsons;Shaw Green
Affiliations:
Department of Computer Science, Utrecht University, Utrecht, The Netherland;Department of Computer Science, Utrecht University, Utrecht, The Netherland;Department of Computer Science, University of Liverpool, Liverpool, UK;Department of Electronic Engineering, Queen Mary & Westfield College, University of London, London, UK
Venue:
UAI'00 Proceedings of the Sixteenth conference on Uncertainty in artificial intelligence
Year:
2000

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Abstract

Qualitative probabilistic networks have been designed for probabilistic reasoning in a qualitative way. Due to their coarse level of representation detail, qualitative probabilistic networks do not provide for resolving trade-offs and typically yield ambiguous results upon inference. We present an algorithm for computing more insightful results for unresolved trade-offs. The algorithm builds upon the idea of using pivots to zoom in on the trade-offs and identifying the information that would serve to resolve them.