Blackboard systems have played a major role in distributed AI research at UMass. The following paper introduces the blackboard architecture, summarizes the key control issues facing blackboard systems, and surveys the evolution of several alternative blackboard control schemes:
"The Evolution of Blackboard Control Architectures," N. Carver and V. Lesser, Expert Systems with Applications, Special Issue on The Blackboard Paradigm and Its Applications, vol. 7, no. 1, 1--30, 1994 (an expanded version is available as Technical Report 92-71, Department of Computer Science, University of Massachusetts).
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