A blackboard architecture for control
Artificial Intelligence
The Hearsay-II Speech-Understanding System: Integrating Knowledge to Resolve Uncertainty
ACM Computing Surveys (CSUR)
Representations for Rigid Solids: Theory, Methods, and Systems
ACM Computing Surveys (CSUR)
The Evolution of a Decision Support Architecture for Polymer Composites Design
IEEE Expert: Intelligent Systems and Their Applications
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ALADIN, a knowledge-based system to aid aluminum alloy design for aerospace applications, is examined. Issues of interest in the ALADIN project are what the appropriate architecture is for the explicit representation and utilization of multiple alternative models, and how search in this space of multiple interacting models is to be focused. How ALADIN was designed to deal with these issues is briefly described. A discussion is presented of the structure of ALADIN's knowledge base, which captures complex technical concepts as well as data in symbolic, frame-based terms; a multilevel planning search architecture; and the integration of symbolic and numerical approaches. ALADIN's accomplishments are illustrated by examining one fragment of an interactive design session with the system.