Guillermo GALLEGO
Guillermo GALLEGO
PhD, Cornell University, 1988
Professor Emeritus
Tel 2358 7099
Office Room 5545
Research Interests

Dynamic Pricing, Revenue Optimization, Choice Modeling, Assortment Optimization, Supply Chain Management, Inventory Theory

Contact Info
Tel 2358 7099
Office Room 5545
Research Interests

Dynamic Pricing, Revenue Optimization, Choice Modeling, Assortment Optimization, Supply Chain Management, Inventory Theory


Professor Guillermo Gallego served as Department Head for six years (2016 - 2021). He was also the holder of the Crown Worldwide Professor of Engineering (from March 2016 to August 2022).

Prior to his appointment in January 2016, Prof Gallego was the Liu Family Professor at the Department of Industrial Engineering and Operations Research at Columbia University, where he served as the Department Chairman from 2002-2008. He was named a Manufacturing and Service Operations Management Society (MSOM) Fellow in 2013, INFORMS Fellow in 2012 and has been the recipient of many awards including the Revenue Management Historical Prize (2011) and the Revenue Management Practice Prize (2012), the INFORMS Impact Prize (2016) and the Management Science Best Paper Award (2017).

Prof Gallego’s research interests are Dynamic Pricing and Revenue Optimization, Supply Chain Management, Electronic Commerce, and Inventory Theory. He has published influential papers in the leading journals of his field where he has also occupied a variety of editorial positions. His work has been supported by numerous industrial and government grants. In addition to theoretical research, Prof Gallego has developed strong collaboration with global corporations such as Disney World, Hewlett Packard, IBM, Lucent Technologies, Nomis Solutions, and Sabre Airline Solutions. He has also worked with government agencies such as the National Research Council, the National Science Foundation in United States and the Ireland Development Agency. His graduate students are associated with prestigious universities and occupy leading roles in their chosen fields. He spent his 1996-97 sabbatical at Stanford University and was a visiting scientist at the IBM Watson Research Center from 1999-2003.

Prof Gallego received both his PhD degree (1988) and MS degree (1987) in Operations Research and Industrial Engineering from Cornell University.

Honors and Awards
  • Informs Management Science Best Paper Award 2017
  • Informs Impact Prize 2016
  • HKIE Fellow class 2016
  • Keynote Speaker INFORMS Annual meeting 2013
  • MSOM Fellows class of 2013
  • Informs Fellow class of 2012
  • Informs Revenue Management and Pricing Practice Prize, Berlin (2012)
  • AGIFORS technical paper award, Barcelona (2012)
  • Informs Revenue Management and Pricing Historical Prize, with G. van Ryzin (2011)
  • AGIFORS Best technical paper award, Montreal (2008)
  • AGIFORS Best paper award, Tahiti (2008)
  • AGIFORS Best paper award, Korea (2007)
  • IBM Faculty Award (2006-2007)
  • Informs Revenue Management and Pricing Section Award (2005)
  • AGIFORS Best innovation award, Brazil (2005)
  • AGIFORS Best paper award, South Africa (2005)
  • IBM Faculty award (2005-2006)
  • AGIFORS Best paper award, New Zealand (2004)
  • NSF Research Initiation Award (2000)
  • AT&T Scholarship
  • Alpha Pi Mu
  • Omega Rho
Teaching Activities
Courses taught at Columbia University
IEOR 4000 
Production Management 
SIEOR E4150 
Probability and Statistics 
IEOR 4574 
Business Analytics for Operations Research
IEOR E4706 
Financial Engineering I 
IEOR E4700    
Intro to Financial Engineering 
IEOR E4601
Dynamic Pricing and Revenue Management 
Mgmt. Sc.-IEOR W6408
Inventory Theory 
IEOR E6609    
Dynamic Programming 
IEOR E8100
Seminar Revenue Management
Advanced Business Analytics


Research & Professional Activities
Current Research Projects
Assortment Optimization and Choice Modeling
Professional Activities


Edelman prize committee 


Revenue Management and Pricing award committee 


von Neumann prize committee 


Co-organizer of “Management Science Unleashed” conference at IBM. 


Senior Editor POMS


Founder and co-organizer of INFORMS Revenue Management and Pricing Section Conference 


Chairperson, IEOR Department, Columbia University


Senior Editor M&SOM


Editorial Board Member M&SOM


Departmental Editor IIE-Transactions 


Associate Editor Management Science


Associate Editor Naval Research Logistics


Associate Editor Operations Research


Associate Editor IIE-Transactions


Professional Society Memberships
  • The Institute for Operations Research and the Management Sciences
  • Manufacturing and Operations Management Society
  • The Production and Operations Management Society
  • Pricing and Revenue Management Section
  • The Airline Group of the International Federation of Operational Research Societies
  • Society of Hispanic Professional Engineers
Selected Publications
  1. G. Gallego and G. van Ryzin (1994), Optimal Dynamic Pricing of Inventories with Stochastic Demand over Finite HorizonsManagement Science, 40, pp. 999-1020. [Top 5 in Citation]

  2. G. Gallego and I. Moon (1993), The Distribution Free Newsboy Problem: Review and ExtensionsJournal of the Operational Research Society, 44, pp. 825-834. [Top 5 in Citation]

  3. G. Gallego and G. van Ryzin (1997), A Multiproduct Dynamic Pricing Problem and its Applications to Network Yield ManagementOperations Research, 45, pp. 24-41. [Top 5 in Citation]

  4. Y. Feng and G. Gallego (1995), Optimal Starting Times for End of Season Sales and Optimal Stopping Times for Promotional FaresManagement Science, 41, pp. 1371-1391. [Top 5 in Citation]

  5. G. Gallego and Ö Özer (2001), Integrating Replenishment Decisions with Advance Demand InformationManagement Science, 47, pp. 1344-1360. [Top 5 in Citation]

  6. G. Gallego, R. Ratliff and S. Shebalov (2014), A General Attraction Model and Sales-based Linear Program for Network Revenue Management under Customer Choice, Operations Research, 63 (1), pp. 212-232. [Recent Publications]

  7. G. Gallego, R. Wang, M. Hu, J. Ward and J. L. Beltran (2014), No Claim? Your Gain: Design of Residual Value Extended Warranties Under Risk Aversion and Strategic Claim BehaviorMSOM, 17 (1), 87-100. [Recent Publications]

  8. G. Gallego and H. Topaloglu (2014), Constrained Assortment Optimization for the Nested Logit Model, Management Science, 60, pp. 2583-2601. [Recent Publications]

  9. J. Davis, G. Gallego and H. Topaloglu (2014), Assortment Optimization under Variants of the Nested Logit ModelOperations Research, 62 (2), pp. 250-273. [Recent Publications]

  10. G. Gallego and R. Wang (2014), Multiproduct Price Optimization and Competition under the Nested Logit Model with Product-differentiated Price Sensitivities, Operations Research, 62 (2), pp. 450-461. [Recent Publications]

  11. N. Chen and G. Gallego (2016), Do Consumers Benefit from Dynamic Pricing? Available at SSRN [Papers Submitted for Publication]

  12. G. Gallego, A. Li, VA Truong and X. Wang (2015), Online Resource Allocation with Customer Choice, Available at  arXiv:1511.01837v1 [math.OC] [Papers Submitted for Publication]