Walter Sun



1 Microsoft Way
Microsoft Corporation
Redmond, WA 98052

E-mail: waltsun@hotmail.com

Walter Sun graduated with a PhD in Electrical Eng. from the Massachusetts Institute of Technology summer 2005. Previously, Walter received a Bach. of Elec. Eng. degree from the Georgia Institute of Technology in Atlanta, GA in June 1995. He received a Sc.M. degree under a Department of Defense research fellowship in February 1997 at the Massachusetts Institute of Technology in the Speech Communication Group within the Research Lab of Electronics. After a 5 year leave of absence to work in industry, he returned Sept 2002 to complete his Ph.D. in Elec. Eng. at M.I.T. within the Stochastic Systems Group in the Laboratory for Information and Decision Systems.

His thesis was on learning the dynamics of deformable objects and recurisve boundary estimation using curve evolution methods.

Walter is currently a Principal Development Manager (manager of dev leads) at Microsoft Corporation in Bing.
Peer-reviewed Journal Papers
W. Sun, M. Cetin, R. Chan, A. S. Willsky, "Learning the Dynamics and Time-Recursive Boundary Estimation of Deformable Objects," 17(11):2186-2200, IEEE Transactions on Image Processing, Nov 2008.

W. Sun, A. Fan, L. Chen, T. Schouwenaars, M. Albota: "Using Dynamic Programming to Optimally Rebalance Portfolios," 1(2), The Journal of Trading, Spr 2006.

W. Sun, M. Cetin, W. C. Thacker, T. M. Chin, A. S. Willsky: "Variational Approaches on Discontinuity Localization and Field Estimation in Sea Surface Temperature and Soil Moisture," IEEE Transactions on Geoscience and Remote Sensing, 44(2): 336-350, Feb 2006. (reprint made available with permission from IEEE)

W. Sun, A. Fan, L. Chen, T. Schouwenaars, M. Albota: "Optimal Rebalancing for Institutional Portfolios," Journal of Portfolio Management, 32(2): 33-43, Winter 2006.

Conference and Other Papers
W. Sun, M. Cetin, R. Chan, A. S. Willsky, "Segmentatoin of the Evolving Left Ventricle by Learning the Dynamics," The 5th IEEE International Symposium of Biomedical Imaging (ISBI), Paris, France, May 2008.

W. Sun, M. Cetin, R. Chan, V. Reddy, G. Holmvang, V. Chandar, A. Willsky, "Segmenting and Tracking the Left Ventricle by Learning the Dynamics in Cardiac Images," In Information Processing in Medical Imaging, July 2005, Glenwood Springs, CO.

W. Sun, M. Cetin, R. Chan, V. Reddy, G. Holmvang, V. Chandar, A. Willsky, "Segmenting and Tracking the Left Ventricle by Learning the Dynamics in Cardiac Images," MIT Technical Report 2642, Feb 2005 (extended version of paper accepted in IPMI 2005).

W. Sun, A. Fan, L. Chen, T. Schouwenaars, M. A. Albota: Optimal Rebalancing Strategy for Institutional Portfolios, MIT Working Paper, December 2004. Available on Social Science Research Network (www.ssrn.com).

W. Sun, M. Cetin, W. C. Thacker, T. M. Chin, A. S. Willsky: "Localization of Oceanic Fronts and Feature Boundaries Using a Variational Technique," Eos Trans. AGU, 84(46), Fall Meet. Suppl., Abstract NG11A-0174, San Francisco, CA, 2003. [Outstanding Student Paper Award]

W. Sun: Relationship between Trading Volume and Security Prices and Returns, MIT LIDS Technical Report 2638 (Feb 2003 Area Exam). Committee: Sanjoy Mitter, Mike Perrott, John Fisher.

W. Sun: "Analysis and Interpretation of Glide Characteristics in Pursuit of an Algorithm for Recognition," Master's Thesis (Advisor Kenneth N. Stevens), Feb 1997.

T.K. Gaylord, Elias N. Glytsis, P.D. Maker, R.E. Muller, W. Sun, D.W. Wilson: "Simulated Performance of Diffractive Optical Elements Using a Helmholtz Equation Solver," Optical Society of America Annual Meeting Program, p. 91, 1995.

Academic Awards
Outstanding Student Paper Award, AGU Fall Meeting, December 2003.
Passed Society of Actuaries Exam 100 (Awarded 2nd Prize internationally), Nov 1993
Passed Society of Actuaries Exam 110 and 135, Nov 1996
-GRE Subject Math 990/990, Engineering 980/990 (99%)
-GRE General Analytical 800/800, Quantitative 800/800
Passed Engineer-in-Training Exam, Spring 1994
Passed PhD Qualifying Exam (MIT), December 1996
Passed PhD Qualifying Exam as a Junior (Georgia Tech), April 1994

Miscellaneous (old/minor/non-academic/random) Awards
USTA Fair Oaks Tennis junior (U-18) tournament winner (1991).
Athens City Championship [Bishop Park] open division finalist (1991).
2nd Place National Mu Alpha Theta contest (1991).
Top 3 scorer in Putnam exam for Georgia Tech (1991, 1992, 1993, 1994).
1995 MIT Intramural Tennis A-Division Team Champions.
Top 3 in 2005 MIT Integration Bee.
Invited Talk - Quantitative Work Alliance for Applied Finance, Education, and Wisdom Meeting, Optimal Rebalancing Strategy, Boston, MA, April 12, 2005.
Michael Chang Foundation doubles tournament winner (with Steve Fan) (2007) and player on tournament winning team (2008).
Georgia Tech President's Scholarship Regional (Washington) Committee Chair (2005-).

Last modified: Feb 2009.