Intercausal Reasoning with Uninstantiated Ancestor Nodes
Marek Druzdzel, Max Henrion
Intercausal reasoning is a common inference pattern involving probabilistic dependence of causes of an observed common effect. The sign of this dependence is captured by a qualitative property called product synergy. The current definition of product synergy is insufficient for intercausal reasoning where there are additional uninstantiated causes of the common effect. We propose a new definition of product synergy and prove its adequacy for intercausal reasoning with direct and indirect evidence for the common effect. The new definition is based on a new property matrix half positive semi-definiteness, a weakened form of matrix positive semi-definiteness.
PDF Link: /papers/93/p317-druzdzel.pdf
AUTHOR = "Marek Druzdzel
and Max Henrion",
TITLE = "Intercausal Reasoning with Uninstantiated Ancestor Nodes",
BOOKTITLE = "Proceedings of the Ninth Conference Annual Conference on Uncertainty in Artificial Intelligence (UAI-93)",
PUBLISHER = "Morgan Kaufmann",
ADDRESS = "San Francisco, CA",
YEAR = "1993",
PAGES = "317--325"