I am a Senior Statistician currently working on scientific problems related to computational social sciences in the Department of Statistics and Methodology, NORC at the University of Chicago. I am also a Research Assistant Professor in the Department of Applied Mathematics, Illinois Institute of Technology.

Papers Software Presentations Services Teaching Contact

- Local Adpation for Approximation and Optimization of Univariate Functions, Report, Illinois Institute of Technology, 2016. Working.
- Comparison of Public Domain Software or Services for Probabilistic Record Linkage and Address Standardization, Report, NORC at the University of Chicago, 2016. Working.
- Report on the Third Workshop on Sustainable Software for Science: Practice and Experiences (WSSSPE3), Report, 2016. Submitted. (Report, Bibtex)
- Report on the Second Workshop on Sustainable Software for Science: Practice and Experiences (WSSSPE2), Journal of Open Research Software, 2016. (Report, Bibtex)
- Machine Learning for Machine Data from a CATI Network, In JSM Proceedings, Statistical Computing Section. Alexandria, VA: American Statistical Association, 515-522, 2015. (Offprint, Bibtex)
- Advances in Interactive Knowledge Discovery, Report, Banff International Research Station for Mathematical Innovation and Discovery, Alberta, Canada, 2015. (Report, Bibtex)
- GAIL---Guaranteed Automatic Integration Library in MATLAB: Documentation for Version 2.1, Report, Department of Applied Mathematics, Illinois Institute of Technology, IL, USA, 2015. (Report, Bibtex)
- ALGORITHM 937: MINRES-QLP for Symmetric and Hermitian Linear Equations and Least-Squares Problems, ACM Transactions on Mathematical Software, Volume 40, Number 2, 16:1--16:12, 2014. (Offprint, Bibtex)
- MINRES-QLP Pack and Reliable Reproducible Research via Supportable Scientific Software, Journal of Open Research Software, Volume 2, Number 1, 2014. (Offprint, Bibtex)
- Summary of the First Workshop On Sustainable Software For Science: Practice And Experiences (WSSSPE1), Journal of Open Research Software, Volume 2, Number 1, 2014. (Report, Bibtex)
- A Complementarity Approach to Solving Computable General Equilibrium Models, Computational Economics, 2014. (Offprint, Bibtex)
- OSCEF: The Open-Source CIM-EARTH Framework User Manual for Version 1.0, Report ANL/MCS-TM-339, Computation Institute, University of Chicago, 2013. (Report, Bibtex)
- OSCEF APIs, Computation Institute, University of Chicago, 2013. (Report, Bibtex)
- Minimal Residual Methods for Complex Symmetric, Skew Symmetric, and Skew Hermitian Systems. Report ANL/MCS-P3028-0812, Computation Institute, University of Chicago, 2013. (Report, Bibtex)
- MINRES-QLP Pack and Reliable Reproducible Research via Staunch Scientific Software, First Workshop on Sustainable Software for Science: Practice and Experiences, 2013. (Report, Bibtex)
- A Painless AMPL/PATH Tutorial Introduction to Solving Complementarity Problems with a Case Study from CIM-EARTH. Technical Report, Center for Robust Decision Making on Climate and Energy Policy, University of Chicago, 2013. (Report, Bibtex)
- ALGORITHM & DOCUMENTATION: MINRES-QLP for Symmetric and Hermitian Linear Equations and Least-Squares Problems. Report ANL/MCS-P3027-0812, Computation Institute, University of Chicago, 2012. (Report, Bibtex)
- MINRES-QLP:
A Krylov Subspace Method for Indefinite or Singular Symmetric Systems. SIAM Journal of Scientific
Computing, Volume 33, Number 4, 1810-1836, 2011.
(Offprint,
Bibtex)

*SIAG/LA Prize 2012* - Iterative Methods for Singular Linear Equations and Least-Squares Problems. Ph.D. Dissertation, Stanford University, 2006. (PDF, Bibtex)

- GAIL (Guaranteed Automatic Integration Library) in MATLAB: A suite of algorithms for integration problems in one, many, and infinite dimensions, and whose answers are guaranteed to be correct.
- GAIL, development version, Mar 2015---present (ZIP, GitHub, Bibtex)
- GAIL, version 2.1, Mar 2015 (ZIP, GitHub, Bibtex)
- GAIL, version 2.0, Nov 2014 (ZIP, Git, Bibtex)
- GAIL, version 1.3, Feb 2014 (ZIP, Git, Bibtex)
- GAIL, version 1.0, Sep 2014 (ZIP, Git, Bibtex)
- MINRES-QLP projects: Iterative algorithms for computing the unique pseudoinverse solution of large linear equations
*Ax = b*or linear least-squares problems*min ||Ax - b||*, where the linear operator or matrix*A*is singular and with special symmetry structures. - MINRES-QLP Pack, Matlab/Octave version 1 (Download, Bibtex)
- CS-MINRES-QLP in Matlab/Octave version 1 (Download, Bibtex)
- MINRES-QLP MATLAB version 2 (Download, Bibtex)
- MINRES-QLP MATLAB version 1 (Download, Bibtex)
- MINRES-QLP Fortran 90/95 (Download, Bibtex)
- MINRES-QLP Fortran 90/95 with experimental Matlab-Mex interface (Download, Bibtex)
- MINRES in Matlab/Octave and Fortran 77/90/95
- OSCEF (Open-Source CIM-EARTH Framework) in C++: Software framework for modeling and solving computable general equilibrium models with applications in climate change and economics.
- BeamLab in Matlab: A collection of Matlab algorithms related to beamlet, curvelet, and ridgelet analysis. Version 200, 2003. (ZIP, Bibtex)

- Oracle Real-Time Decisions in Java and JEE
- Kamakura Risk Manager in C++

- Krylov and Saunders Subspace Methods, The Eleventh International Conference on Matrix Theory and Applications, Linyi University, Shangdong, People's Republic of China, June 15, 2014.
- MINRES-QLP: a Krylov Subspace Method for Indefinite or Singular Symmetric Systems, SIAG/LA Prize Ceremony, SIAM Conference on Applied Linear Algebra, Universitat Politècnica de València, Valencia, Spain, June 21, 2012.

- As Quaternions Sprang to Light, Life, Full-Grown, Classical and Modern Topics of Applied Mathematics, Fest colloquium honouring Gerhard Opfer The Department of Mathematics, University of Hamburg, Germany, September 17, 2015.
- Krylov and Saunders Subspace Methods, Minisymposium on Matrix Computations Using Structures and Other Innovative Techniques, The 8th International Congress on Industrial and Applied Mathematics (ICIAM), Beijing, China, August 14, 2015.
- Machine Learning for Machine Data in Computational Social Sciences, Advances in Interactive Knowledge Discovery and Data Mining in Complex and Big Data Sets Banff International Research Station (BIRS), Alberta, Canada, July 26, 2015.
- Krylov and Saunders Subspace Processes, Dept. of Mathematics and Statistics, San Jose State University, San Jose, CA, May 16, 2015.
- Profiling Distributed System Performance with Statistical and Machine Learning Methods, IEEE-Chicago Section Technical Symposium & Exhibition: Explore the Future, Motorola Solutions, Schaumburg, IL, November 6, 2014.
- Krylov and Saunders Subspace Methods, Chinese Academy of Sciences, Beijing, People's Republic of China, June 20, 2014.
- Reliable Reproducible Research in Computational Sciences through Sustainable Software Practices, Chinese Academy of Sciences, Beijing, People's Republic of China, June 19, 2014.
- Generalized Minimal Residual Methods for Singular Linear Systems or Linear Least-Squares Problems, Applied Mathematics Colloquium, University of Maryland, Baltimore, Maryland, USA, May 9, 2014.
- Minimal Residual Methods for Solving Singular Unsymmetric or Non-Hermitian Linear Equations, International Conference on Engineering and Computational Mathematics (ECM), Hong Kong, December 18, 2013.
- Design, Interface, Implementation, & Usage of OSCEF, International Conference on Optimization: Techniques & Applications (ICOTA), Taipei, Taiwan, December 5, 2013. (Slides)
- Minimal Residual Methods for Solving Singular Unsymmetric or Non-Hermitian Linear Equations, Winter School for Scientific Computing, Taida Institute for Mathematical Sciences (TIMS), National Taiwan University, Taipei, Taiwan, December 5, 2013.
- Minimal Residual Methods for Singular Hermitian, Complex Symmetric, or Skew Hermitian Linear Equations, Winter School for Scientific Computing, Taida Institute for Mathematical Sciences (TIMS), National Taiwan University, Taipei, Taiwan, December 5, 2013.
- GAIL: Guaranteed Automatic Integration Library, Math Talk and Tea, IIT SIAM Student Chapter, Illinois Institute of Technology, Chicago IL, November 20, 2013.
- AMPL/PATH Tutorial Introduction to Solving Regularized Complementarity Problems with a Case Study from CIM-EARTH, International Conference on Continuous Optimization (ICCOPT), Lisbon, Portugal, July 29, 2013.
- Krylov Solvers for Singular Hermitian, Complex Symmetric, or Skew Hermitian Linear Systems, The Center of Linear and Combinatorial Structures, University of Lisbon, Portugal, July 22, 2013.
- MEGA-MINRES-QLP: A Krylov Solver for Singular Hermitian, Complex Symmetric, or Skew Hermitian Linear Systems or Least-Squares Problems, Young Mathematician Forum, Peking University, Beijing, People's Republic of China, June 18, 2013.
- A Krylov Solver for Singular Hermitian, Complex Symmetric, or Skew Hermitian Linear Systems or Least-Squares Problems, School of Mathematical Sciences Seminars, Peking University, Beijing, People's Republic of China, June 16, 2013.
- Minimal Residual Methods for Singular Complex Symmetric, Skew Symmetric, and Skew Hermitian Linear Systems and Least-Squares Problems, New Frontiers in Numerical Analysis and Scientific Computing: A conference on the occasion of Lothar Reichel's 60th birthday and on the 20th anniversary of ETNA, Kent, OH, April 19, 2013.
- Extending MINRES and MINRES-QLP for Singular Linear Systems or Linear Least-Squares Problems with Special Symmetries, CCAM Lunch Seminar, Purdue University, West Lafayette, IN, April 5, 2013.
- Minimal Residual Methods for Singular Complex Symmetric, Skew Symmetric, or Skew Hermitian Linear Systems, Algorithms Seminar, Duke University, Durham, NC, March 11, 2013.
- Design, Interface, Implementation, and Usage of OSCEF, Seminar on Scientific Computing, Taida Institute for Mathematical Sciences, National Taiwan University, Taipei, Taiwan, January 2, 2013.
- AMPL/PATH Tutorial Introduction to Solving Complementarity Problems, Workshop on Complementarity And Its Extensions, Institute for Mathematical Sciences, National University of Singapore, Singapore, December 19, 2012.
- Krylov Solvers for Singular Symmetric, Hermitian, Complex Symmetric, or Skew Symmetric Linear Systems, Centre for Scientific Computing (CSC) Seminar, Simon Fraser University, BC, Canada, November 2, 2012.
- Krylov Solvers for Singular Symmetric, Hermitian, Complex Symmetric, or Skew Symmetric Linear Systems, Structured Linear Algebra Problems: Analysis, Algorithms and Applications, KU Leuven, Leuven, Belgium, September 10, 2012.

- Machine Learning for Machine Data, Minisymposium on Computational Social Sciences, The 8th International Congress on Industrial and Applied Mathematics (ICIAM), Beijing, China, August 14, 2015.
- Machine Learning for Machine Data, Applications in Big Data, Joint Statistical Meetings, Seattle, Washington, August 10, 2015.
- Krylov Subspace Methods for Solving Singular Linear Systems or Least-Squares Problems, SIAM Annual Meeting, Chicago, IL, July 8, 2014.
- Extending GMRES for Singular Systems of Equations, Mid-West Numerical Analysis Day, Milwaukee, Wisconsin, May 3, 2014.
- Generalized Minimal Residual Methods for Singular Linear Systems or Linear Least-Squares Problems, Copper Mountain Conference on Iterative Methods, Denver, Colorado, April 7, 2014.
- Krylov Solvers for Singular Hermitian, Complex Symmetric, or Skew Hermitian Linear Systems, SIAM Conference on Computational Science and Engineering, Boston, MA, February 25, 2013.
- Applying Iterative Methods to Least-squares Computations of Null Vectors, Eigenvectors, Singular Vectors, invited talk at: IIT SIAM Student Chapter Conference, Illinois Institute of Technology, Chicago IL, October 29, 2011.
- Mini-Memory + Gene Golub Fellowship, Symposium on Gene Golub's Legacy: Matrix Computations--Foundation and Future, Stanford CA, March 1, 2008.
- MINRES-QLP: A Krylov Subspace Method for Singular Symmetric Linear Equations and Least-Squares Problems, Stanford 50: State of the Art and Future Directions of Computational Mathematics and Numerical Computing, Stanford, CA, March 29, 2007.

- Probabilistic Record Linkage and Address Standardization, Data Science Seminar, Department of Applied Mathematics and Department of Computer Science, Illinois Institute of Technology, Chicago IL, November 17, 2015.
- Generalized Minimal Residual Methods for Singular Linear Systems or Linear Least-Squares Problems, Meshfree Methods Seminar, Department of Applied Mathematics, Illinois Institute of Technology, Chicago IL, April 15, 2015.
- Machine Learning for Machine Data, Innovation Days, NORC at the University of Chicago, Chicago, IL, February 11, 2015.
- Machine Learning Methods for Machine Log Files, Social Media Analytics Group, NORC at the University of Chicago, Chicago, IL, January 28, 2015.
- Profiling Distributed System Performance with Statistical and Machine Learning Methods, Meshfree Methods Seminar, Department of Applied Mathematics, Illinois Institute of Technology, Chicago IL, November 20, 2014.
- Good Practices for Mathematical Software, Meshfree Methods Seminar, Department of Applied Mathematics, Illinois Institute of Technology, Chicago IL, May 21, 2014.
- Matrix Computations and Data Sciences, NORC at the University of Chicago, Chicago, IL, January 15, 2014.
- Minimal Residual Methods for Solving Singular Unsymmetric or Non-Hermitian Linear Equations, Scientific and Statistical Computing Seminar, Departments of Computer Science, Mathematics, Statistics, and Computation Institute, University of Chicago, Chicago, IL, November 14, 2013.
- A Complementarity Approach to Solving Computable General Equilibrium Models, Meshfree Methods Seminar, Department of Applied Mathematics, Illinois Institute of Technology, Chicago IL, October 23, 2013.
- Guaranteed Automatic Integration Library (GAIL) Version 1—before and after, Meshfree Methods Seminar, Department of Applied Mathematics, Illinois Institute of Technology, Chicago IL, August 6, 2013.
- Reliable Reproducible Research & Staunch Scientific Software—A Proposal for CubMC: Guaranteed MC Quadrature, Meshfree Methods Seminar, Department of Applied Mathematics, Illinois Institute of Technology, Chicago IL, February 5, 2013.
- A MINRES-QLP-Like Algorithm for Solving Complex Symmetric Linear Systems and Least-Squares Problems, Meshfree Methods Seminar, Department of Applied Mathematics, Illinois Institute of Technology, Chicago, IL, May 29, 2012.
- An Open-Source Framework for CGE Models & Matrix-Constrained Problems in International Trade & Climate Policy, Linear Algebra and Optimization Seminar, Stanford University, Stanford, CA, March 16, 2012.
- OSCEF: Open-Source CIM-EARTH Framework, Foster Children Meeting, University of Chicago, Chicago, IL, March 8, 2012.
- MINRES-QLP for Singular Symmetric and Hermitian Linear Equations and Least-Squares Problems, LANS Informal Seminar, Argonne National Laboratory, Argonne, IL, December 14, 2011.
- MINRES-QLP and its Application to Radial Basis Function Interpolation, Meshfree Methods Seminar, Department of Applied Mathematics, Illinois Institute of Technology, Chicago IL, April 11, 2011.
- Applying Krylov-Subspace Methods to Least-Squares Computation of Null Vectors, Eigenvectors, and Singular Vectors, Oracle Corporation, Redwood Shores CA, August 25, 2010.
- MINRES-QLP: A Krylov Subspace Method for Singular Symmetric Linear Equations and Least-Squares Problems, Institute for Computational Mathematics, Hong Kong Baptist University, Hong Kong, January 15, 2009.
- MINRES-QLP: A Krylov Subspace Method for Singular Symmetric Linear Equations and Least-Squares Problems, UC Berkeley linear algebra (LAPACK) seminar, Berkeley, CA, January 17, 2007.

- Computing Google's PageRank by Sparse Approximation, IMA Workshop: User-Centered Modeling, University of Minnesota, Minneapolis, MN, May 8, 2012.
- Open-Source CIM-EARTH Framework, Poster session presented at: Midwest Numerical Analysis Day, University of Chicago, Chicago, IL, May 25, 2013.
- OSCEF: Open Source CIM-EARTH Framework, Poster session presented at: NSF Site Visit, University of Chicago, Chicago, IL, April 24, 2013.
- Design, Interface, Implementation, & Usage of OSCEF, Poster session presented at: The American Association for the Advancement of Science (AAAS) Annual Meeting, Boston, MA, February 17, 2013.
- CIM-EARTH: OSCEF, Poster session presented at: SAMSI/NCAR Workshop on Massive Datasets in Environment and Climate, Mesa Lab, National Center for Atmospheric Research (NCAR), Boulder, CO, February 13-15, 2013.
- OSCEF: Open Source CIM-EARTH Framework, Poster session presented at: RDCEP External Advisory Board Meeting, University of Chicago, Chicago, IL, February 12, 2013.
- OSCEF: The Open-Source CIM-EARTH Framework, Poster session presented at: Annual Meetings of the Center for Robust Decision-making in Climate and Energy Policy, University of Chicago, Chicago, IL, September 20-21, 2012.
- The Open-Source CIM-EARTH Framework (OSCEF), poster session presented at: Fourth Biannual Spark Research reception; From Desktop to Supercomputer: Research and Computing at the University of Chicago, University of Chicago, Chicago, IL, November 4, 2011.
- The Open-Source CIM-EARTH Framework (OSCEF), poster session presented at: First Annual Meetings of the Center for Robust Decision-making in Climate and Energy Policy, University of Chicago, Chicago IL, September 21, 2011.

- PhD Committee Member, Yuhan Ding's thesis, IIT, 2015.
- MS Committee Member, Xin Tong's thesis, IIT, 2014.

- Referee, Applied and Computational Harmonic Analysis (ACHA), 2013-present.
- Referee, ACM Transactions on Mathematical Software (ACM TOMS), 2013-present.
- Referee, Computational and Applied Mathematics (COAM), 2014-present.
- Referee, International Journal of Computer Mathematics (IJCM), 2013-present.
- Referee, Journal of Computational Physics (JCOMP), 2014-present.
- Referee, Linear Algebra and its Applications (LAA), 2013-present.
- Referee, SIAM Journal on Matrix Analysis and Applications (SIMAX), 2009-present.

- Member, Force11 Software Citation Working Group, Oct 2015--present
- Reviewer, Discovery with Data: Leveraging Statistics with Computer Science to Transform Science and Society, A Working Group of the American Statistical Association, 2014-present.
- Co-Lead, TSSO/Field, Statistics and Methodology Consultancy Model (SMCM), NORC at the University of Chicago, 2014-present.
- Member, Social Media Analytics Group, NORC at the University of Chicago, 2014-present.

- Scientific Committee Member, The Twelfth International Conference on Matrix Theory and Applications, Lanzhou University, Lanzhou City, Gansu Province, People's Republic of China, July 22-26, 2016.
- Organizer and Chair, Special Session on Frontiers in Computational Mathematics, Central Fall Sectional Meeting, AMS Special Session, Loyola University Chicago, Chicago, IL, October 2-4, 2015.
- Program Committee Member, 3rd Workshop on Sustainable Software for Science: Practice and Experiences (WSSSPE3), Boulder, CO, September 28-29, 2015.
- Organizer and Chair, Minisymposium on Computational Social Sciences, The 8th International Congress on Industrial and Applied Mathematics (ICIAM), Beijing, China, August 14, 2015.
- Program Committee Member, E-science ReseaRch leading tO negative Results (ERROR), 11th IEEE eScience conference, Munich, Germany, August 31-September 4, 2015.
- Scientific Committee Member, The Eleventh International Conference on Matrix Theory and Applications, Linyi University, Shangdong, People's Republic of China, June 15, 2014.
- Organizer and Chair, Minisymposium on Advances in Krylov and Extended Krylov Subspace Methods (Part I, Part II, Part III), SIAM Annual Meeting, Chicago, IL, USA July 7-11, 2014. (Abstracts)
- Co-organizer and Co-chair, Minisymposium on Reliable Computational Science (Part I, Part II), SIAM Annual Meeting, Chicago, IL, USA July 7-11, 2014. (Abstracts)
- Organizer and Chair, Minisymposiam on Linear Complementarity Problems and Beyond, 18th Conference of the International Linear Algebra Society (ILAS), Providence, RI, USA, June 3-7, 2013. (Abstracts)
- Organizer and Chair, Special Session on Krylov Subspace Methods, New Frontiers in Numerical Analysis and Scientific Computing: A conference on the occasion of Lothar Reichel's 60th birthday and on the 20th anniversary of ETNA, Kent, OH, USA, April 19-20, 2013. (Abstracts)
- Minisymposium Organizer and Chair, SIAM Conference on Computational Science and Engineering, Boston, MA, USA, February 25-March 01, 2013. (Abstracts)
- Minisymposium Organizer and Chair, SIAM Conference on Applied Linear Algebra, Valencia, Spain, June 18-22, 2012. (Abstracts)
- Judge, Chicago Area Undergraduate Research Symposium, Chicago, IL, March 3, 2012.
- Organizer, SCREAM (Symposium on Current Research in Engineering & Applied Mathematics), SIAM Stanford Student Chapter, Stanford University, Stanford, CA, May 22, 2004. (Program)
- Photographer, The SVG Meeting: A Celebration, Stanford University, Stanford, CA, January 9 - 10, 2004. (Photos)
- Founder and Organizer, SCREAM (Symposium on Current Research in Engineering & Applied Mathematics), SIAM Stanford Student Chapter, Stanford University, Stanford, CA, Fall 2003.
- Program Committee Member, Program Editor, and Photographer, Symposium on Gene Golub’s Legacy: Matrix Computations – Foundation and Future, Stanford University, Stanford, CA, March 1, 2008. (Program)
- Program Editor and Photographer, STANFORD 50: State of the Art & Future Directions of Computational Mathematics & Numerical Computing, Stanford University, Stanford, CA, March 28 - 31, 2007. (Program, Photos)

- Presenter and Photographer, STEMapalooza with Girl Scouts, Country Club Hills, IL, March 9, 2013. (Photos)
- Photographer, Urban Research Class: Final Presentation, Lindblom Math and Science Academy, Chicago, IL, June 6, 2012. (Photos)
- Presenter and Photographer, STEMapalooza with Girl Scouts, Country Club Hills, IL, April 28, 2012. (Photos)
- Website Judge, FIRST (For Inspiration and Recognition of Science and Technology) Midwest Regional, Chicago, IL, March 23-24, 2012.
- Software Inspector, Illinois State FIRST (For Inspiration and Recognition of Science and Technology) Tech Challenge Finals, Illinois Institute of Technology, Chicago, IL, December 10, 2011.
- Mentor, College Preparation Help, DeLaSalle Institute, Chicago, IL, May 14, 2011. (Photos)
- Commencement Speaker and Prize Presenter, 27th Graduation and Prize-giving Ceremony, Immaculate Heart of Mary College, Hong Kong, December 23, 2009.
- Organizer, Wage Club Teleconference, American Association of University Women, Concord, CA, April 28, 2009.
- Mentor, Mentoring Program, Stanford Women in Electrical Engineering, Stanford University, Stanford, CA, 2006-2007.

- Practicum Advisor, (Near) Real-Time Machine Learning for Machine Data, Practicum Program, Masters Program in Computer Science

- Instructor, MATH 491-195 Solving Problems in the Social Sciences Using Tools from Computational Mathematics and Statistics (Computational Social Sciences), Brazil Scientific Mobility Program
- Co-instructor, Math 573: Reliable Mathematical Software (Slides)

- Teaching Fellow & Instructor, CS137: Introduction to Scientific Computing
- Teaching Assistant, CS138: MATLAB and Maple for Science and Engineering Applications
- Teaching Assistant, CS237: Numerical Linear Algebra
- Teaching Assistant, CS336: Advanced Methods in Matrix Computations

- Tutor for Society of Women Engineers, provided free evening tutoring on all undergraduate engineering subjects

- Adjunct Instructor, Finance I
- Adjunct Instructor, Finance II
- Adjunct Instructor, Applied Statistics

Office: 55 East Monroe Street, Suite 3000, Chicago, IL 60603, USA.

Tel: (312) 759-4008

Email: sctchoi at uchicago.edu, Choi-Sou-Cheng at norc.uchicago.edu, or schoi32 at iit.edu

Web: home.uchicago.edu/sctchoi/, NORC at the University of Chicago, mypages.iit.edu/~schoi32/