Belief networks with decision graphs
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United States of America Patent
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Nov 28, 2000
Grant Date -
N/A
app pub date -
Jul 30, 1997
filing date -
Jul 30, 1997
priority date (Note) -
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Abstract
An improved belief network is provided for assisting users in making decisions. The improved belief network utilizes a decision graph in each of its nodes to store the probabilities for that node. A decision graph is a much more flexible and efficient data structure for storing probabilities than either a tree or a table, because a decision graph can reflect any equivalence relationships between the probabilities and because leaf nodes having equivalent probabilities need not be duplicated. Additionally, by being able to reflect an equivalency relationship, multiple paths (or combinations of the parent values) refer to the same probability, which yields a more accurate probability.
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