The behavior and performance of complex real-world systems is shaped by interactions between multiple decision-makers.

The Operations Research Group at Dartmouth studies these interactions using operations research methods.

Our research encompasses applications in transportation, healthcare, climate mitigation, disaster management, and food waste management, drawing from tools in optimization, game theory and machine learning.

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Lab Updates

  • May 16, 2023 Our recent working paper "A Machine Learning Approach for Solution Space Reduction in Aircraft Disruption Recovery" co-authored by Navid Rashedi, Nolan Sankey, Vikrant Vaze, and Keji Wei is now available online.
  • July 25, 2022 Congratulations to Yifei Sun for successfully defending her thesis.
  • March 8, 2022 Congratulations to Lilly Yang for successfully passing PhD Qualifying examination.
  • February 22, 2022 Congratulations to Pushpendra Singh for successfully passing PhD Qualifying examination.
  • October 19, 2021 Congratulations to Yifei Sun for successfully passing her Thesis Proposal defense.
  • September 1, 2021 We welcome Spencer Bertsch, first year PhD student, to our group.
  • July 1, 2021 Our paper titled "Service Delivery Strategies for Alleviating Pandemic Suffering While Maintaining Profitability" co-authored by Omkar Palsule-Desai, Vikrant Vaze, and Srinagesh Gavirneni was accepted for publication in the journal Service Science.
  • March 30, 2021 Our paper titled "Transit Planning Under Ride-Hailing Competition and Traffic Congestion" co-authored by Keji Wei, and Vikrant Vaze was accepted for publication in the journal Transportation Science.
  • March 29, 2021 We welcome Prabhat Hegde, second year PhD student, to our group.
  • February 25, 2021 Our paper titled "V. Cross-National Analysis of Food Security Drivers: Comparing Results Based on the Food Insecurity Experience Scale and Global Food Security Index" co-authored by Adrew Allee, Lee R. Lynd, and Vikrant Vaze was accepted for pulication in the journal Food Security.
  • January 4, 2021 We welcome Lilly Yang, first year PhD student, to our group.
  • October 21, 2020 Our paper titled "Stochastic Programming for Outpatient Scheduling with Flexible Inpatient Exam Accomodation" co-authored by Yifei Sun, Usha Nandini Raghavan, Vikrant Vaze, Christopher S Hall, Patricia Doyle, Stacey Sullivian Richard, and Christoph Wald was accepted for publication in the journal Health Care Management Science.
  • October 12, 2020 Our paper titled "Predicting Future Occurence of Acute Hypotensive Episodes Using Noninvasive and Invasive Features" co-authored by Yifei Sun, Navid Rashedi, Vikrant Vaze, Parikshit Shah, Ryan Halter, Jonnathan T Elliott, and Norman A Paradis was accepted for publication in the journal Military Medicine.
  • September 1, 2020 We welcome Pushpendra Singh, first year PhD student, to the group.
  • September 4, 2020 Our paper titled "Early Detection of Hypotension Using a Multivariate Machine Learning Approach" co-authored by Navid Rashedi, Yifei Sun, Vikrant Vaze, Parikshit Shah, Ryan Halter, Jonnathan T Elliot, and Norman A Paradis was accepted for publication in the journal Military Medicine.
  • September 14, 2020 Congratulations to Reed Harder for passing his thesis defense.
  • October 21, 2019 Our paper titled "Interairline Equity in Airport Scheduling Interventions" won the award as the 2019 Outstanding Paper in Air Transportation from INFORMS Transportation Science & Logistics (TSL) Society.
  • October 3, 2019 Congratulations to Keji Wei for being
    selected as the Winner in the Anna Valicek graduate student paper award competition, sponsored by the Airline Group of the International Federation of Operational Research Societies (AGIFORS).
  • September 1, 2019 We welcome Charles Liu and Phoebe Sun, first year PhD students, to the group.
  • July 16, 2019 Congratulations to Keji Wei for successfully defending his PhD dissertation titled "Schedule Planning and Endogeneity of Travelers' Decisions in Congested Large-Scale Transportation Networks."
  • May 30, 2019 Our paper titled "Airline Timetable Development and Fleet Assignment Incorporating Passenger Choice" co-authored by Keji Wei, Vikrant Vaze, and Alexandre Jacquillat was accepted for publication in the journal Transportation Science.
  • May 7, 2019 Our paper titled "An integer programming approach to fisheries observer deployment" co-authored by Reed Harder and Vikrant Vaze was accepted for publication in the journal Transportation Research Part E.
  • April 27, 2019 Our paper titled "Majority judgment over a convex candidate space" co-authored by Chiwei Yan, Prem Swaroop, Michael Ball, Cynthia Barnhart, and Vikrant Vaze was accepted for publication in the journal Operations Research Letters.
  • April 23, 2019 Our paper titled "Simulation Analysis and Comparison of Point of Care Testing and Central Laboratory Testing" co-authored by Reed Harder, Keji Wei, Vikrant Vaze, and James Stahl was accepted for publication in the journal Medical Decision Making: Policy & Practice.
  • April 17, 2019 Our paper titled "Multi-Objective Pricing Optimization for a High-Speed Rail Network Under Competition" co-authored by Huizhou Cao, Xuemei Li, Vikrant Vaze, and Xueyan Li was published online in the journal Transportation Research Record.
  • January 12, 2019 Our paper titled "A Robust Pairing Model for Airline Crew Scheduling" co-authored by David Antunes, Vikrant Vaze, and Antonio Pais Antunes was accepted for publication in the journal Transportation Science.
  • September 1, 2018 We welcome Ramya Babu, a first year PhD student, to the group.
  • June 20, 2018 Prof. Vaze's keynote titled Artificial Intelligence for Airline Optimization delivered at the Amadeus Airline Executive Summit (AES) in Prague, Czech Republic was voted as the best talk of the day.
  • April 16, 2018 Our paper titled "Robust optimization: Lessons learned from aircraft routing" co-authored by Lavanya Marla, Vikrant Vaze, and Cynthia Barnhart was accepted for publication in the journal Computers & Operations Research.
  • February 18, 2018 Our paper titled "Airline-driven ground delay programs: A benefits assessment" was accepted for publication in the journal Transportation Research Part C.
  • March 12, 2018 Prof. Vaze received CAREER Award from the National Science Foundation (NSF).
  • January 21, 2018 Our paper titled "Modeling Crew Itineraries and Delays in the National Air Transportation System" co-authored by Keji Wei and Vikrant Vaze was accepted for publication in the journal Transportation Science.
  • December 11, 2017 Our paper titled "Interairline Equity in Airport Scheduling Interventions" co-authored by Alexandre Jacquillat and Vikrant Vaze was accepted for publication in the journal Transportation Science.
  • November 15, 2017 Our paper titled "A Data-Driven Approach for Accurate Estimation and Visualization of Energy Savings from Advanced Lighting Controls co-authored by Vikrant Vaze, Maulin Patel, and Saeed Bagheri was accepted for publication in the journal Innovative Energy & Research.
  • October 7, 2017 Congratulations to Keji Wei for being
    selected as the Bronze Medal Finalist in the Anna Valicek graduate student paper award competition, sponsored by the Airline Group of the International Federation of Operational Research Societies (AGIFORS).
  • September 1, 2017 We welcome Yifei Sun, a first year MS student, to the group.
  • March 16, 2017 Our paper titled "Impacts of airline mergers on passenger welfare" co-authored by Vikrant Vaze, Tian Luo, and Reed Harder was accepted for publication in the journal Transportation Research Part E.
  • November 15, 2016 Congratulations to Reed Harder for receiving Honorable Mention at INFORMS Aviation Applications Section's Best Student Presentation Competition in Nashville, TN.
  • September 1, 2016 We welcome Navid Rashedi, a first year PhD student, to the group.
  • June 14, 2016 Second year graduate student, Reed Harder, made a presentation titled "Two-Stage Game Theoretic Modelling of Airline Frequency and Fare Competition" at The 11th Workshop on the Economics of Networks, Systems and Computation (NetEcon 2016) in Juan-les-Pins, France.
  • March 31, 2016 Our paper titled "Modeling Probability Distributions of Primary Delays in the National Air Transportation System" co-authored by Shitong Wang and Vikrant Vaze was accepted for publication in the journal Transportation Research Record.
  • November 17, 2015 Our paper titled "Tarmac Delay Policies: A Passenger-Centric Analysis" co-authored by Chiwei Yan, Vikrant Vaze, Sunny Vanderboll, and Cynthia Barnhart was accepted for publication in the journal Transportation Research Part A: Policy and Practice.
  • November 2, 2015 Congratulations to Chiwei Yan for winning the INFORMS Aviation Applications Section's Best Student Presentation Competition. Chiwei is a PhD student at MIT and is co-advised by Prof. Vikrant Vaze.
  • November 2, 2015 Congratulations to Dr. Alexandre Jacquillat for winning the prestigious George B. Dantzig Dissertation Award as well as the INFORMS Transportation Science and Logistics society's best PhD dissertation award. Prof. Vaze served as a dissertation committee member and a dissertation chapter co-author.
  • November 1, 2015 Second year graduate student, Keji Wei, made a presentation titled "Quantifying Delay Propagation Through Crew Connections" at the INFORMS Annual Meeting in Philadelphia, PA.
  • September 15, 2015 Two chapters co-authored by Prof. Vaze were published in the book The Global Airline Industry, 2nd Edition by Wiley.
  • October 27, 2015 Our paper titled "Modeling Probability Distributions of Primary Delays in the National Air Transportation System" co-authored by Shitong Wang and Vikrant Vaze was accepted for publication in the journal Transportation Research Record.
  • February 14, 2015 Our paper titled "Integrated Airline Scheduling: Considering Competition Effects and the Entry of the High Speed Rail" co-authored by Luis Cadarso, Vikrant Vaze, Cynthia Barnhart, and Angel Marin was accepted for publication in the journal Transportation Science.
  • January 1, 2015 Our paper titled "The Price of Airline Frequency Competition" co-authored by Vikrant Vaze and Cynthia Barnhart was pubished online in the book Game Theoretic Analysis of Congestion, Safety and Security by Springer Series in Reliability Engineering.
  • January 1, 2015 We welcome Reed Harder, a first year PhD student, to the group.
  • January 1, 2015 We welcome Shitong Wang, from the Tianjin Chengjian University (Tianjin, China), to the group. Shitong will be with us until July 31st 2015 as a Visiting Researcher.
  • December 20, 2014 We welcome Prof. Xuemei Li, from the Beijing Jiaotong University (Beijing, China), to the group. Prof. Li will be with us until August 30th 2015 as a Visiting Research Professor.
  • September 1, 2014 We welcome Keji Wei, a first year PhD student, to the group.
  • April 1, 2014 Our paper titled "Airline-Driven Performance-Based Air Traffic Management: Game Theoretic Models and Multicriteria Evaluation" co-authored by Antony Evans, Vikrant Vaze, and Cynthia Barnhart was accepted for publication in the journal Transportation Science.

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