Department of Computer Science
University of Pittsburgh
Pittsburgh, Pa.

" Diagnosis in medicine has been a testbed for developing ideas about troubleshooting in .engineering disciplines. A recently published paper addresses a fundamental problem of defining the variety of knowledge structures—including causal models—needed to support a broad spectrum of reasoning mechanisms used in diagnosis. A systematic method of defining concepts and links is described.

0. Senyk, R.S. Patil, F.A. Sonnenberg, "Systematic knowledge base design for medical diagnosis," Applied Artificial Intelligence, 3, 165-90, Spring-Summer 1989. (Tufts University, Boston; Massachusetts Institute of Technology, Cambridge)

"Inheritance of properties from a general class concept to more specific related concepts is an essential feature of object-oriented systems. Yet it has been shown to interfere with the design of concurrent object-oriented systems. A solution called "behavior abstraction" is proposed and demonstrated.

D.G. Kafura, K.H. Lee, "Inheritance in actor...

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