Lewis received a BS degree in mathematics and a BA degree in political science at Eckerd College, graduating in 1992.[3] He proceeded to earn an MS degree in theoretical statistics from Florida State University in 1995 and a PhD degree in industrial and systems engineering from Georgia Tech in 1998.[2] Lewis' PhD thesis Bias Optimality in a Two-Class Nonstationary Queueing System[4] at Georgia Tech was advised by Robert E. Foley.[5]
Career
After his PhD, Lewis spent a year at the University of British Columbia as a postdoctoral fellow.
In 1999, he joined the faculty at the University of Michigan in Ann Arbor as Assistant Professor of Industrial and Operations Engineering.[3][6]
Lewis became Associate Professor at the Operations Research and Information Engineering department at Cornell University in 2005 and was promoted to Full Professor in 2011.[2]
Lewis founded the Institute for Operations Research and the Management Sciences (INFORMS) Minority Issues Forum in 2001 and served as its first president.[7]
In 2009, Lewis co-chaired the 15th INFORMS Applied Probability Conference at Cornell University in Ithaca, NY.[8][9]
Lewis acted as chair of the Applied Probability Society from 2012 to 2014.[10][11]
In 2024, Lewis was elected to be the 2025 INFORMS President-elect and subsequently the 2026 President of INFORMS.[12][13]
Lewis was Associate Dean for Diversity and Faculty Development for Cornell University's College of Engineering from 2015 to 2020.[14][15] In this role, he acted as task force chair of the Faculty Diversity Committee, which was convened in 2017.[16]
Lewis served as principal investigator on the Cornell University Engineering Success Program to increase the participation of underrepresented minority and first-generation college students.[17][18]
Research
Lewis researches the optimal control of non-stationary systems, developing policies for admission and pricing at non-stationary queueing systems with finite capacity and multiple customer classes, with applications in production, communication, and the airline industry.[19]
He studied the dynamic control and optimal resource allocation of service systems, such as call centers, through "upgrades, reneging, and retrials" (for example after market segmentation).[20]
