This talk discussed the use of the Dempster-Shafer theory of evidence for the fusion of identity declarations and attribute information within a military environment. It proposed to hierarchically structure the identity declarations according to NATO's STANAG 4420 charts, which provide a better base for achieving interoperability in information exchange between nations than uncontrolled alternatives. One drawback of the Dempster-Shafer evidential theory is the long calculation time required by its high computational complexity. Due to the hierarchical nature of the evidence, an algorithm proposed by Shafer & Logan was implemented which reduces the calculations from exponential to linear time proportional to the number of nodes in the tree. A semi-automated decision making technique, based on belief and plausibility values, was then described to select alternatives which best support the combined identity declarations. The second architecture was concerned with the fusion of attribute information to declare an identity using a modified version of the Dempster-Shafer evidential combination algorithm. We used fuzzy logic to make possible the fusion of apparently incomplete attribute information.
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