Christopher Thomas Ryan

Christopher Thomas Ryan Contact information
Mailing Address:   Christopher Thomas Ryan
         	   University of Chicago
         	   Booth School of Business
         	   Office 316, Harper Center
 	           5807 S Woodlawn Avenue
         	   Chicago, IL 60637

Phone:             (773)702-9783
Email:             chris.ryan[AT]chicagobooth[DOT]edu


I'm an Associate Professor of Operations Management in the Booth School of Business at the University of Chicago. I obtained my PhD in Management Science at the Sauder School of Business at the University of British Columbia, advised by Maurice Queyranne.

My research interests are in the theory of optimization (including infinite-dimensional, discrete, and stochastic) with applications to theoretical economics (contract theory, game theory, and mechanism design), decision problems in the digital economy (particularly video games and apps), and healthcare operations management.

C.V: [pdf]

Google Scholar page: [link].

Teaching

Booth School of Business (UChicago)

BUS40110: Managing Service Operations (MBA program) -- Winter 2017, Fall 2017
BUS40000: Operations Management: Business Process Fundamentals (MBA program) -- Spring 2011-2013,2015 and Fall 2013, 2015
BUS36904: Optimization in Topological Vector Spaces (PhD program) -- Winter 2012, Spring 2014
BUS36904: Combinatorial Optimization (PhD program) -- Spring 2016

Sauder School of Business (UBC)

COMM399: Logistics and Operations Management (Undergraduate) -- Summer 2009
COMM291: Applications in Business Statistics (Undergraduate) -- Winter (Term 2) 2008

Research Papers

Journal Articles and Refereed Conference Proceedings

A simplex method for uncapacitated pure-supply infinite network flow problems, (with R.L. Smith and M.A. Epelman), to appear in SIAM Journal of Optimization, 2018.

Monotonicity of optimal contracts without the first-order approach, (with R. Ke), to appear in Operations Research, 2018.

A general solution method for moral hazard problems, (with R. Ke), to appear in Theoretical Economics, 2018.

A non-asymptotic approach to analyzing kidney exchange graphs, (with Y. Ding, D. Ge, and S. He), to appear in Operations Research, 2018. (preliminary version appeared in ACM-EC 2015 [link])

Mixed-integer linear representability, disjunctions and variable elimination. , (with A. Basu, K. Martin, and G. Wang), Integer Programming and Combinatorial Optimization (IPCO) conference 2017. pages 75--85. [link]

Strong duality and sensitivity analysis in semi-infinite linear programming, (with A. Basu and K. Martin), Mathematical Programming. Volume 161(1), 2017, pages 451--485. [link]

The Slater conundrum: Duality and pricing in infinite-dimensional optimization, (with K. Martin and M. Stern), SIAM Journal of Optimization. Volume 26(1), 2016, pages 111-138. [link]

Projection: A unified approach to semi-infinite linear programs and duality in convex programming, (with A. Basu and K. Martin), Mathematics of Operations Research, vol. 40(1), 2015, pp. 146-170.[link]

On the sufficiency of finite support duals in semi-infinite linear programming, (with A. Basu and K. Martin), Operations Research Letters, vol. 42(1), 2014, pp. 16--20.[link]

Rational generating functions and integer programming games, (with M. Koeppe and M. Queyranne), Operations Research, vol. 59(1), 2011, pp. 1445-1460.[link]

Parametric integer programming algorithm for bilevel mixed integer programs, (with M. Koeppe and M. Queyranne), Journal of Optimization Theory and Applications, vol. 146(1), 2010, pp. 137-150.[link]

Computing pure strategy Nash equilibria in compact symmetric games, (with A.X. Jiang and K. Leyton-Brown), Proceedings of ACM Electronic Commerce (EC), 2010.[link]

Working papers

Mixed-integer linear representability, disjunctions, and Chvatal functions --- modeling implications, (with A. Basu, K. Martin, and G. Wang), minor revision at Mathematics of Operations Research (preliminary version appeared in IPCO 2017).

The discrete moment problem with nonconvex shape constraints, (with X. Chen, S. He, B. Jiang, and T. Zhang), major revision at Operations Research.

Top-Ranked Selection From Noisy Multi-wise Comparisons, (with Y. Feng and R. Caldentey), submitted.

A penalty function approach for deriving optimality conditions in bilevel optimization, (with R. Ke), submitted.

Incentivized actions in freemium games (with M. Nagarajan, L. Sheng, Y. Cheng and C. Tong), submitted.

Implementability and ordinal preferences (with M. Koeppe and M. Queyranne).


Other interests

Check out my dad's music, my brother's music, and my friend Vaughn Oliver's music.

I volunteer with the Colibri Learning Foundation as a curriculum developer and trainer of other volunteers.