Wisconsin Institute for Discovery, Rm 4241
University of Wisconsin
Madison, WI 53715 USA
jramakrishn2 [ at ] wisc [ dot ] edu
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Welcome! I am a postdoctoral scholar (research associate) in the optimization theme at the
Wisconsin Institute for Discovery (WID), University of Wisconsin-Madison, working with Prof. Michael C. Ferris. My primary research area is operations research. Broadly, my interest is in the development and application of mathematical models and optimization methods, particularly for problems that have a dynamic and stochastic nature. I am interested in applications in medical decision making (e.g., radiation therapy cancer treatment), agricultural management, and energy management (e.g., stochastic unit commitment).
I received my Ph.D. degree (June 2013) at
MIT in the Department of Electrical Engineering and Computer Science
(EECS), and was affiliated with the Laboratory for Information and Decision Systems (LIDS). I worked on optimizing the delivery of radiation therapy cancer treatment dynamically over time. My advisors were Prof. John N. Tsitsiklis, Prof. David Craft, and Prof. Thomas Bortfeld. I previously received my Bachelor's and Master's degrees in Electrical and Computer Engineering (ECE) from Georgia Tech.
Submitted Papers / Other Reports
T. Bortfeld, J. Ramakrishnan, J. N. Tsitsiklis, and J. Unkelbach, "Optimization of radiation therapy fractionation schedules in the presence of tumor repopulation," revised, Dec 2014.
S. Dirkse, M. C. Ferris, and J. Ramakrishnan, "GDXMRW: Interfacing GAMS and MATLAB," documentation part of GAMS 24.3, July 2014.
J. Ramakrishnan and M. C. Ferris, "SOCP Radiotherapy Benchmark Test Case in CBLIB," documentation of test case in , Oct 2014. Poster reference cblib, the conic benchmark library here.
J. Unkelbach, D. Craft, T. Hong, D. Papp, J. Ramakrishnan, E. Salari, J. Wolfgang, and T. Bortfeld, "Exploiting tumor shrinkage through temporal optimization of radiotherapy," Physics in Medicine and Biology, Vol. 59, 2014, pp. 3059-3079, doi.
J. Unkelbach, D. Craft, E. Salari, J. Ramakrishnan, and T. Bortfeld, "The dependence of optimal fractionation schemes on the spatial dose distribution," Physics in Medicine and Biology, Vol. 58, 2013, pp. 159-167, doi. News article featured on medicalphysicsweb ( link)
J. Ramakrishnan, D. Craft, T. Bortfeld, and J. N. Tsitsiklis, "A dynamic programming approach to adaptive fractionation," Physics in Medicine and Biology, Vol. 57, 2012, pp. 1203-1216, doi.
K. Leder and J. Ramakrishnan, "Minimizing metastatic risk in radiotherapy fractionation schedules," working paper, Dec 2013.
Minimizing Metastatic Risk in Radiotherapy Fractionation Schedules
(Poster) Health Systems Optimization Workshop, Northwestern University, Chicago, IL, Sept 2014
Interfacing GAMS and Matlab for Large-scale Radiotherapy Optimization
(Invited) INFORMS Annual Meeting, San Francisco, CA, Nov 2014
( Poster) High-performance numerical methods supporting radiation therapy treatment planning workshop II, Lehigh University, Bethlehem, PA, May 2014
Dynamic optimization of fractionation schedules in radiation therapy
Systems Information Learning Optimization (SILO) Seminar, University of Wisconsin, Madison, WI, Nov 2013
(Invited) INFORMS Annual Meeting, Minneapolis, MN, Oct 2013
Ph.D. Defense, MIT, Cambridge, MA, May 2013
Optimization of radiation therapy fractionation schedules in the presence of tumor repopulation
9th International Conference on Dose, Time and Fractionation in Radiation Oncology, University of Wisconsin, Madison, WI, Sept 2013
(Invited) INFORMS Healthcare Meeting, Chicago, IL, June 2013
LIDS Student Conference, MIT, Cambridge, MA, Feb 2013
(Invited) INFORMS Annual Meeting, Phoenix, AZ, Oct 2012
A dynamic programming approach to adaptive fractionation in radiation therpay
(Poster) The American Association of Physicists in Medicine (AAPM) Meeting, Charlotte, NC, July 2012
LIDS Student Conference, MIT, Cambridge, MA, Feb 2012, Jan 2011
INFORMS Healthcare Meeting, Montreal, Canada, June 2011
(Poster) High-performance numerical methods supporting radiation therapy treatment planning workshop, Banff, Canada, March 2011
(Invited) Physics Seminar, Massachusetts General Hospital, Boston, MA, June 2010
List of Co-Authors
Thomas Bortfeld (MGH), David Craft (MGH), Steven Dirkse (GAMS), Michael C. Ferris (UW-Madison), Ted Hong, MD (MGH), Kevin Leder (UMN), Dávid Papp (MGH), Ehsan Salari (Wichita), John N. Tsitsiklis (MIT), Jan Unkelbach (MGH), John Wolfgang (MGH)
Last Modified: 2014/12/08