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Joseph F. Traub
Joseph Frederick Traub (June 24, 1932 – August 24, 2015) was an American computer scientist. He was the Edwin Howard Armstrong Professor of Computer Science at Columbia University and External Professor at the Santa Fe Institute. He held positions at Bell Laboratories, University of Washington, Carnegie Mellon, and Columbia, as well as sabbatical positions at Stanford, Berkeley, Princeton, California Institute of Technology, and Technical University, Munich. Traub was the author or editor of ten monographs and some 120 papers in computer science, mathematics, physics, finance, and economics. In 1959 he began his work on optimal iteration theory culminating in his 1964 monograph, which is still in print. Subsequently he pioneered work with (Henryk Woźniakowski ) on computational complexity applied to continuous scientific problems (information-based complexity). He collaborated in creating significant new algorithms including the Jenkins-Traub Algorithm for Polynomial Zeros, as well as the (Kung-Traub ), (Shaw-Traub ), and (Brent-Traub ) algorithms. One of his research areas was continuous quantum computing. As of November 10, 2015, his works have been cited 8500 times, and he has an h-index of 35.
From 1971 to 1979 he headed the Computer Science Department at Carnegie Mellon and led it from a critical period to eminence (see (Joseph Traub digital archive at Carnegie Mellon )). From 1979 to 1989 he was the founding Chair of the (Computer Science Department at Columbia ). From 1986 to 1992 he served as founding Chair of the (Computer Science and Telecommunications Board, National Academies ) and held the post again 2005-2009. Traub was founding Editor-in-Chief, (Journal of Complexity ), in 1985 until his death in 2015. Both his research and institution building work have had a major impact on the field of computer science.
== Early career ==
He attended the Bronx High School of Science where he was captain and first board of the chess team. After graduating from City College of New York he entered Columbia in 1954 intending to take a PhD in physics. In 1955, on the advice of a fellow student, Traub visited the IBM Watson Research Lab at Columbia. At the time, this was one of the few places in the country where a student could gain access to computers. Traub found his proficiency for algorithmic thinking matched perfectly with computers. In 1957 he became a Watson Fellow through Columbia. His thesis was on computational quantum mechanics. His 1959 PhD is in applied mathematics since computer science degrees were not yet available. (Indeed, there was no Computer Science Department at Columbia until Traub was invited there in 1979 to start the Department.)
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