Knowledge Structures and Evidential Reasoning in Decision Analysis
  The roles played by decision factors in making complex subject are decisions
are characterized by how these factors affect the overall decision. Evidence
that partially matches a factor is evaluated, and then effective computational
rules are applied to these roles to form an appropriate aggregation of the
evidence. The use of this technique supports the expression of deeper levels of
causality, and may also preserve the cognitive structure of the decision maker
better than the usual weighting methods, certainty-factor or other
probabilistic models can.
