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Thomas L. Saaty was a professor at the Wharton School, University of Pennsylvania for 10 years and before that was for seven years in the Arms Control and Disarmament Agency at the U.S. State Department. He is a member of the National Academy of Engineering and in 2008 he received the career “Impact” Award from INFORMS, the Institute for Operations Research and Management Science.
He is the architect of the award winning decision theory, the Analytic Hierarchy Process (AHP) and its generalization to decisions with dependence and feedback, the Analytic Network Process (ANP). He has published numerous articles and more than 12 books on these subjects. His nontechnical book on the AHP, Decision Making for Leaders, has been translated to more than 10 languages. His book, The Brain: Unraveling the Mystery of How It Works, generalizing the ANP further to neural firing and synthesis, appeared in the year 2000. He is currently involved in extending his mathematical multicriteria decision-making theory to how to synthesize group and societal influences.
The AHP is used in both individual and group decision-making by business, industry, and governments and is particularly applicable to complex large-scale multiparty multicriteria decision problems The ANP has been applied to a variety of decisions involving benefits, costs, opportunities, and risks and is particularly useful in predicting outcomes. At the Katz School he teaches Decision Making in Complex Environments, using both the AHP and the ANP and Creativity and Problem Solving.
Dr. Saaty has made contributions in the fields of operations research (parametric linear programming, epidemics and the spread of biological agents, queuing theory, and more generally behavioral mathematics as it relates to operations). He also made contributions in arms control and disarmament, writing a book on mathematical models in that field, and in urban design, where he coauthored the book Compact City with George B. Dantzig. He has written books and articles in graph theory and its applications, nonlinear mathematics, analytical planning, and game theory and conflict resolution.