Sou-Cheng (Terrya) Choi
I am a computational mathematician and software engineer currently working on scientific problems related to climate change and economic policies in the Computation Institute, University of Chicago with a joint appointment in the Argonne National Laboratory.
Selected Publications
- ALGORITHM: MINRES-QLP for Singular Symmetric and Hermitian Linear Equations and Least-Squares Problems, to appear in ACM Transactions on Mathematical Software. (Preprint)
- DOCUMENTATION: MINRES-QLP for Singular Symmetric and Hermitian Linear Equations and Least-Squares Problems. Report SOL 2011-2, 23 pages, SOL, Stanford University, Aug 2011. (Draft)
- 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)
- Iterative Methods for Singular Linear Equations and Least-Squares Problems. Ph.D. Dissertation, Stanford University, 2007
Software
Research software
- OSCEF (Open-Source CIM-EARTH Framework) in C++
- CS-MINRES in Matlab and Fortran 90/95
- MINRES-QLP in Matlab and Fortran 90/95
- MINRES in Matlab and Fortran 77/90/95
- BeamLab in Matlab
Industrial software
- Oracle Real-Time Decisions in Java and JEE
- Kamakura Risk Manager in C++
Recent Presentations
- MINRES-QLP for Singular Symmetric and Hermitian Linear Equations and Least-Squares Problems, LANS Informal Seminar, Argonne National Laboratory, Argonne, IL, December 14, 2011.
- 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.
- 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.
- 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.
- MINRES-QLP and its Application to Radial Basis Function Interpolation, 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, Hong Kong Baptist University, Hong Kong, January 15, 2009.
- 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.
- 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.
Classes Taught
Stanford Computer Science
Teaching Fellow & Instructor
- CS137: Introduction to Scientific Computing
Teaching Assistant
- CS138: MATLAB and Maple for Science and Engineering Applications
- CS237: Numerical Linear Algebra
- CS336: Advanced Methods in Matrix Computations
Tutor
- Stanford Society of Women Engineers, provided free tutoring on all undergraduate engineering subjects
INSEAD MBA Program
Adjunct Instructor
- Finance I
- Finance II
- Applied Statistics
Services
- 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.
- 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 Editor and Photographer, STANFORD 50: State of the Art & Future Directions of Computational Mathematics & Numerical Computing, Stanford University, Stanford, CA, March 28 - 31, 2007.
- Organizer, SCREAM (Symposium on Current Research in Engineering & Applied Mathematics), SIAM Stanford Student Chapter, Stanford University, Stanford, CA, May 22, 2004.
- Photographer, The SVG Meeting: A Celebration, Stanford University, Stanford, CA, January 9 - 10, 2004.
- Founder and Organizer, SCREAM (Symposium on Current Research in Engineering & Applied Mathematics), SIAM Stanford Student Chapter, Stanford University, Stanford, CA, Fall 2003.
Contact
Email: sctchoi at uchicago.edu, ci.uchicago.edu, or mcs.anl.gov.
Web: http://home.uchicago.edu/sctchoi, http://www.stanford.edu/~scchoi