Andrew J. Schaefer

Publication Activity (10 Years)

Years Active: 2000-2024
Publications (10 Years): 21

Top Topics

Operational Decisions

Totally Unimodular

Integer Program

Top Venues

Oper. Res. Lett.

INFORMS J. Comput.

Publications

Seth Brown, Saumya Sinha, Andrew J. Schaefer
Markov decision process design: A framework for integrating strategic and operational decisions. Oper. Res. Lett. 54 (2024)
Temitayo Ajayi, Seyedmohammadhossein Hosseinian, Andrew J. Schaefer, Clifton D. Fuller
Combination Chemotherapy Optimization with Discrete Dosing. INFORMS J. Comput. 36 (2) (2024)
Alex Dunbar, Saumya Sinha, Andrew J. Schaefer
Relaxations and duality for multiobjective integer programming. Math. Program. 207 (1) (2024)
Temitayo Ajayi, Taewoo Lee, Andrew J. Schaefer
A note on the implications of approximate submodularity in discrete optimization. Optim. Lett. 17 (1) (2023)
Seth Brown, Saumya Sinha, Andrew J. Schaefer
Markov Decision Process Design: A Novel Framework for Integrating Strategic and Operational Decisions. CoRR (2023)
Rachael M. Alfant, Temitayo Ajayi, Andrew J. Schaefer
Evaluating mixed-integer programming models over multiple right-hand sides. Oper. Res. Lett. 51 (4) (2023)
Silviya Valeva, Guodong Pang, Andrew J. Schaefer, Gilles Clermont
Acuity-Based Allocation of ICU-Downstream Beds with Flexible Staffing. INFORMS J. Comput. 35 (2) (2023)
Temitayo Ajayi, Christopher Thomas, Andrew J. Schaefer
The Gap Function: Evaluating Integer Programming Models over Multiple Right-Hand Sides. Oper. Res. 70 (2) (2022)
Varun Suriyanarayana, Onur Tavaslioglu, Ankit B. Patel, Andrew J. Schaefer
Reinforcement learning of simplex pivot rules: a proof of concept. Optim. Lett. 16 (8) (2022)
Temitayo Ajayi, Taewoo Lee, Andrew J. Schaefer
Objective Selection for Cancer Treatment: An Inverse Optimization Approach. Oper. Res. 70 (3) (2022)
Seth Brown, Wenxin Zhang, Temitayo Ajayi, Andrew J. Schaefer
A Gilmore-Gomory construction of integer programming value functions. Oper. Res. Lett. 49 (4) (2021)
David T. Mildebrath, Victor Gonzalez, Mehdi Hemmati, Andrew J. Schaefer
Relating single-scenario facets to the convex hull of the extensive form of a stochastic single-node flow polytope. Oper. Res. Lett. 48 (3) (2020)
Temitayo Ajayi, Varun Suriyanarayana, Andrew J. Schaefer
Theorems of the alternative for conic integer programming. Oper. Res. Lett. 48 (3) (2020)
David T. Mildebrath, Wendy Knight, Andrew J. Schaefer
Optimal jersey retirement in the National Basketball Association. IISE Trans. 52 (4) (2020)
Sepehr Nemati, Zeynep G. Icten, Lisa M. Maillart, Andrew J. Schaefer
Mitigating Information Asymmetry in Liver Allocation. INFORMS J. Comput. 32 (2) (2020)
Onur Tavaslioglu, Oleg A. Prokopyev, Andrew J. Schaefer
Solving Stochastic and Bilevel Mixed-Integer Programs via a Generalized Value Function. Oper. Res. 67 (6) (2019)
Amin Dehghanian, Murat Kurt, Andrew J. Schaefer
Optimizing over pure stationary equilibria in consensus stopping games. Math. Program. Comput. 11 (2) (2019)
Onur Tavaslioglu, Taewoo Lee, Silviya Valeva, Andrew J. Schaefer
On the structure of the inverse-feasible region of a linear program. Oper. Res. Lett. 46 (1) (2018)
Osman Y. Özaltin, Oleg A. Prokopyev, Andrew J. Schaefer
Optimal Design of the Seasonal Influenza Vaccine with Manufacturing Autonomy. INFORMS J. Comput. 30 (2) (2018)
Amin Dehghanian, Andrew J. Schaefer
Superadditive characterizations of pure integer programming feasibility. Optim. Lett. 10 (1) (2016)
Sepehr Nemati, Oleg V. Shylo, Oleg A. Prokopyev, Andrew J. Schaefer
The Surgical Patient Routing Problem: A Central Planner Approach. INFORMS J. Comput. 28 (4) (2016)
Ruichen (Richard) Sun, Oleg V. Shylo, Andrew J. Schaefer
Totally unimodular multistage stochastic programs. Oper. Res. Lett. 43 (1) (2015)
Amin Khademi, Denis Sauré, Andrew J. Schaefer, Ronald S. Braithwaite, Mark S. Roberts
The Price of Nonabandonment: HIV in Resource-Limited Settings. Manuf. Serv. Oper. Manag. 17 (4) (2015)
Jourdain B. Lamperski, Andrew J. Schaefer
A polyhedral characterization of the inverse-feasible region of a mixed-integer program. Oper. Res. Lett. 43 (6) (2015)
Burhaneddin Sandikçi, Nan Kong, Andrew J. Schaefer
A hierarchy of bounds for stochastic mixed-integer programs. Math. Program. 138 (1-2) (2013)
Andrew C. Trapp, Oleg A. Prokopyev, Andrew J. Schaefer
On a Level-Set Characterization of the Value Function of an Integer Program and Its Application to Stochastic Programming. Oper. Res. 61 (2) (2013)
Burhaneddin Sandikçi, Lisa M. Maillart, Andrew J. Schaefer, Mark S. Roberts
Alleviating the Patient's Price of Privacy Through a Partially Observable Waiting List. Manag. Sci. 59 (8) (2013)
David L. Kaufman, Andrew J. Schaefer
Robust Modified Policy Iteration. INFORMS J. Comput. 25 (3) (2013)
Nan Kong, Andrew J. Schaefer, Shabbir Ahmed
Totally unimodular stochastic programs. Math. Program. 138 (1-2) (2013)
Oleg V. Shylo, Oleg A. Prokopyev, Andrew J. Schaefer
Stochastic Operating Room Scheduling for High-Volume Specialties Under Block Booking. INFORMS J. Comput. 25 (4) (2013)
K. Louis Luangkesorn, Theologos Bountourelis, Andrew J. Schaefer, Spencer G. Nabors, Gilles Clermont
The case against utilization: deceptive performance measures in inpatient care capacity models. WSC (2012)
Mehmet C. Demirci, Andrew J. Schaefer, H. Edwin Romeijn, Mark S. Roberts
An Exact Method for Balancing Efficiency and Equity in the Liver Allocation Hierarchy. INFORMS J. Comput. 24 (2) (2012)
Theologos Bountourelis, David Eckman, K. Louis Luangkesorn, Andrew J. Schaefer, Spencer G. Nabors, Gilles Clermont
Sensitivity analysis of an ICU simulation model. WSC (2012)
Osman Y. Özaltin, Oleg A. Prokopyev, Andrew J. Schaefer
Two-stage quadratic integer programs with stochastic right-hand sides. Math. Program. 133 (1-2) (2012)
Sakine Batun, Brian T. Denton, Todd R. Huschka, Andrew J. Schaefer
Operating Room Pooling and Parallel Surgery Processing Under Uncertainty. INFORMS J. Comput. 23 (2) (2011)
Osman Y. Özaltin, Brady Hunsaker, Andrew J. Schaefer
Predicting the Solution Time of Branch-and-Bound Algorithms for Mixed-Integer Programs. INFORMS J. Comput. 23 (3) (2011)
Jayant Rajgopal, Zhouyan Wang, Andrew J. Schaefer, Oleg A. Prokopyev
Integrated design and operation of remnant inventory supply chains under uncertainty. Eur. J. Oper. Res. 214 (2) (2011)
Aditya K. Iyer, Andrew J. Schaefer, Cindy L. Bryce, Gabriel L. Zenarosa, Chung-Chou Ho Chang, Mark S. Roberts
A biologically based discrete-event simulation model of liver transplantation in the United States for pediatric and adult patients. WSC (2011)
Oleg V. Shylo, K. Louis Luangkesorn, Oleg A. Prokopyev, Jayant Rajgopal, Andrew J. Schaefer
Managing patient backlog in a surgical suite that uses a block-booking scheduling system. WSC (2011)
Theologos Bountourelis, K. Louis Luangkesorn, Andrew J. Schaefer, Lisa M. Maillart, Spencer G. Nabors, Gilles Clermont
Development and validation of a large scale ICU simulation model with blocking. WSC (2011)
Osman Y. Özaltin, Oleg A. Prokopyev, Andrew J. Schaefer, Mark S. Roberts
Optimizing the Societal Benefits of the Annual Influenza Vaccine: A Stochastic Programming Approach. Oper. Res. 59 (5) (2011)
Zeynep Erkin, Matthew D. Bailey, Lisa M. Maillart, Andrew J. Schaefer, Mark S. Roberts
Eliciting Patients' Revealed Preferences: An Inverse Markov Decision Process Approach. Decis. Anal. 7 (4) (2010)
Nan Kong, Andrew J. Schaefer, Brady Hunsaker, Mark S. Roberts
Maximizing the Efficiency of the U.S. Liver Allocation System Through Region Design. Manag. Sci. 56 (12) (2010)
Osman Y. Özaltin, Oleg A. Prokopyev, Andrew J. Schaefer
The bilevel knapsack problem with stochastic right-hand sides. Oper. Res. Lett. 38 (4) (2010)
Z. Caner Taskin, J. Cole Smith, Shabbir Ahmed, Andrew J. Schaefer
Cutting plane algorithms for solving a stochastic edge-partition problem. Discret. Optim. 6 (4) (2009)
Andrew J. Schaefer
Inverse integer programming. Optim. Lett. 3 (4) (2009)
Robert T. Koppenhaver, Andrew J. Schaefer, R. Scott Braithwaite, Mark S. Roberts
A Simulation Model of HIV Treatment under Drug Scarcity Constraints. WSC (2009)
Burhaneddin Sandikçi, Lisa M. Maillart, Andrew J. Schaefer, Oguzhan Alagöz, Mark S. Roberts
Estimating the Patient's Price of Privacy in Liver Transplantation. Oper. Res. 56 (6) (2008)
Steven M. Shechter, Matthew D. Bailey, Andrew J. Schaefer, Mark S. Roberts
The Optimal Time to Initiate HIV Therapy Under Ordered Health States. Oper. Res. 56 (1) (2008)
Oguzhan Alagöz, Lisa M. Maillart, Andrew J. Schaefer, Mark S. Roberts
Choosing Among Living-Donor and Cadaveric Livers. Manag. Sci. 53 (11) (2007)
Oguzhan Alagöz, Lisa M. Maillart, Andrew J. Schaefer, Mark S. Roberts
Determining the Acceptance of Cadaveric Livers Using an Implicit Model of the Waiting List. Oper. Res. 55 (1) (2007)
Nan Kong, Andrew J. Schaefer, Brady Hunsaker
Two-stage integer programs with stochastic right-hand sides: a superadditive dual approach. Math. Program. 108 (2-3) (2006)
Andrew J. Schaefer, George L. Nemhauser
Improving airline operational performance through schedule perturbation. Ann. Oper. Res. 144 (1) (2006)
Nan Kong, Andrew J. Schaefer
A factor 1/2 approximation algorithm for two-stage stochastic matching problems. Eur. J. Oper. Res. 172 (3) (2006)
Matthew D. Bailey, Steven M. Shechter, Andrew J. Schaefer
SPAR: stochastic programming with adversarial recourse. Oper. Res. Lett. 34 (3) (2006)
Andrew J. Schaefer, Ellis L. Johnson, Anton J. Kleywegt, George L. Nemhauser
Airline Crew Scheduling Under Uncertainty. Transp. Sci. 39 (3) (2005)
Laura A. Schaefer, Andrew J. Schaefer
Locating Hybrid Fuel Cell-Turbine Power Generation Units under Uncertainty. Ann. Oper. Res. 132 (1-4) (2004)
Oguzhan Alagöz, Lisa M. Maillart, Andrew J. Schaefer, Mark S. Roberts
The Optimal Timing of Living-Donor Liver Transplantation. Manag. Sci. 50 (10) (2004)
J. Cole Smith, Andrew J. Schaefer, Joyce W. Yen
A stochastic integer programming approach to solving a synchronous optical network ring design problem. Networks 44 (1) (2004)
Steven M. Shechter, Andrew J. Schaefer, R. Scott Braithwaite, Mark S. Roberts
Modeling the Progression and Treatment of HIV. WSC (2004)
Jay M. Rosenberger, Andrew J. Schaefer, David Goldsman, Ellis L. Johnson, Anton J. Kleywegt, George L. Nemhauser
A Stochastic Model of Airline Operations. Transp. Sci. 36 (4) (2002)
Jennifer Kreke, Andrew J. Schaefer, Derek C. Angus, Cindy L. Bryce, Mark S. Roberts
Methods for special applications: incorporating biology into discrete event simulation models of organ allocation. WSC (2002)
Jay M. Rosenberger, Andrew J. Schaefer, David Goldsman, Ellis L. Johnson, Anton J. Kleywegt, George L. Nemhauser
Air transportation simulation: SimAir: a stochastic model of airline operations. WSC (2000)