That research program was prolific and influential, leading to numerous systems and research paradigms, including the Opportunistic Model of Planning (one of the 10 most cited papers in Cognitive Science[citation needed]), the rule-based system ROSIE, a number of heuristic expert systems, Distributed Fleet Control, and methods for non-monotonic reasoning and learning in knowledge networks.

Prior to that (1976), was one of the co-inventors of the first continuous speech understanding systems, Hearsay-II,[4] which became the “blackboard architecture.”[citation needed] Hayes-Roth held faculty positions at MIT, Stanford, and Carnegie Mellon.

In 2003 he became a professor in the Information Sciences Department at the United States Navy's Naval Postgraduate School (NPS) in Monterey, California.

AFCEA-GMU C4I Center Symposium: Critical Issues in C4I, George Mason University, Fairfax, VA, AFCEA.

"A Rich Semantic Model of Track as a Foundation for Sharing Beliefs Regarding Dynamic Objects and Events."