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Expert has spent much of his recent efforts with expert systems, especially AGNESS (A Generalized Network-based Expert System Shell). Using that shell, he has built six expert systems: three clinical expert systems, an Image Correspondence Expert System (ICES), a Knowledge-based Object Recognizer that Learns (KOREL), and an expert mechanical engineering system (DWELL-EXPERT). Proposed work includes parallel expert systems, artificial neural networks, temporal (time-based) logic, reasoning with knowledge representations, and discovering causal knowledge in large databases.

Expert specializes in artificial intelligence. Some of his AI research and development work includes automated deduction, learning, heuristic search, knowledge-based systems, and neural networks.

Expert has engineered many knowledge bases and has studied the knowledge engineering process. In addition, he has worked on formal representations of knowledge. In particular, he has extended the extended graph knowledge representation system of John Sowa. A conceptual graph has nodes that represent concepts and relations. Expert has also worked on automating complex reasoning with knowledge in the form of conceptual graphs. A conceptual graph uses nodes to represent concepts and relations. He also has worked on automating complex reasoning on knowledge in the form of logical expressions.


Expert has worked on many aspects of artificial neural networks. For example, he worked on an artificial neural network that simulates a natural network more closely than previous systems do. He did research on a neural network that is used for control of complex systems, for example, a robot arm. He has worked with large neural networks on supercomputers.

Expert has studied and used LISP, PROLOG, and other artificial intelligence programming languages. He wrote the program SAINT, a program that solved indefinite integration problems in calculus and the first large LISP program ever written. He has taught LISP at the university level.

Expert has studied and used Braille and mathematical Braille for many years. He has used Braille printers and displays connected to computers.

Expert has studied and played many games including checkers, chess, kalah, blackjack, and poker. He has designed and implemented programs that play games well. He is a professional gambler.