Email: <firstname><lastname> [ at ] cse [ dot ] iitd [ dot ] ac [ dot ] in
I am a Professor at Department of Computer Science and Engineering at the Indian Institute of Technology, Delhi.
Prior to joining IIT-Delhi, I worked for Opera Solutions India as VP Analytics and Head R&D. Headquartered in New York City, Opera Solutions is an analytics software/solutions company providing state-of-the-art analytics solutions to several global Fortune 500 clients. Prior to Opera Solutions in August 2011, I worked at the Computational Biology Center of IBM T. J. Watson research center, Yorktown Heights, NY, USA. My research explored the use of High-performance computing and machine learning techniques for the analysis of Neuroimaging data. I developed algorithms to solve inverse problems in the domain of medical image reconstruction and analyze functional connectivity of the brain in the domain of fMRI data analysis. Before moving to IBM TJ Watson Research Center, I was manager of the high-performance computing group at IBM India Research Lab. I was privileged to work with some wonderful colleagues at the IBM India Research Lab. All the wonderful work we did wouldn’t have been possible without their enthusiasm, active involvement and support.
My earlier areas of work include communication networks, game theory, auction algorithms and Economics. I also held an adjunct faculty position in the Computer Science Department of Indian Institute of Technology, Delhi, where I taught courses on game theory and communications networks.
· Brain Imaging and Neuroscience of Yoga
· Machine Learning and Big Data Analytics
· IT for Society
· CSL 730: Modern Parallel Programming
Current Research Projects
I am currently actively working in the following projects. Most of my projects require problem solving and building systems/software/application/algorithms for solving the problem. The innovation comes from applying techniques learned in one domain to problems in another domain. These projects require varying degrees of expertise and skills that I have picked up over the years. Those interested in working on these projects, should best avoid expectation of working in any particular area. Instead it will be better if they find the problem interesting and worth solving. I try to guide the students towards their innate strengths areas and try to adapt the problems to suit their temperaments and interests.
o fMRI data analysis methods
o Yogic Sciences
o Computational Sanskrit linguistics
o Posture estimation and tracking
Students not studying at IIT-Delhi, please read this before you write an email to me.
Students interested in research should consider applying to the MSR or PhD program at IIT-Delhi. You may consider MSR/PhD at School of Information Technology for interdisciplinary applied areas, Computer Science and Engineering for fundamental CS research or a PhD at National Resource Center for Value Education in Engineering for research in Yogic Sciences.
University of Queensland and IIT-Delhi now offer a very strong joint PhD program in brain sciences and neuroimaging. There are two options for the PhD program. Under the Indian option students are expected to spend 1 year at UQ, Australia, and rest of the time at IIT Delhi. Under the Australian option, the students are expected to spend one year at IIT-Delhi and rest of the time at UQ. Please also explore the IIT-Delhi and University of Queensland joint PhD program in the area of machine learning applied to fMRI analysis, epilepsy (see project number UQIDAR 00127).
Students who obtain very good UG grades may now be eligible to apply for PhD under prime minister research fellowship (PMRF). This program offers a stipend of Rs. 70,000-80,000 per month (depending on your stage in the PhD program) and research grant of Rs.2 lakhs per year. A caution – the program may be very competitive and some of the decisions may seem arbitrary and unfair to applicants. So, for students seriously considering PhD, it is a good idea to have a backup option other than PMRF.
o Near-Separable Non-negative
Matrix Factorization Using L1-Optimization [pdf]
Aashish Nagpal, Chayan Sharma, Rahul Garg and Pawan Kumar, In The ACM India Joint International Conference on Data Science & Management of Data CoDS-COMAD 2019.
o Evidence of Dense Functional
Connectivity in the Human Brain
Ankita Saha, Ishaan Batta and Rahul Garg, In ISMRM 2018, Paris, France, June 2018
o Disrupted functional
connectivity of occipital lobe with frontal and parietal regions in subjects
with Cocaine addiction
Jaspreet Kaur, Divya Gautam, Rahul Garg, In ISMRM 2018, Paris, France, June 2018.
A Tool for
Transliteration of Bilingual Texts Involving Sanskrit [pdf]
Nikhil Chaturvedi and Rahul Garg
In Proceedings of the 17th World Sanskrit Conference: Computational Sanskrit and Digital Humanities, University of British Columbia, Vancouver, July 2018.
and interpretation of distributed neural activity with sparse models. [ doi, pdf, bibtex ]
Melissa K Carroll, Guillermo A Cecchi, Irina Rish, Rahul Garg, A Ravishankar Rao,
Neuroimage, Volume 44(1), January 2009, pages 112-122.
brain dynamics using Granger causality on fMRI data. [ pdf ]
Guillermo A. Cecchi, Rahul Garg, A. Ravishankar Rao,
The Fifth IEEE International Symposium on Biomedical Imaging (ISBI 2008): 604-607.
Descent with Sparsification: An iterative algorithm for sparse recovery with
restricted isometry property. [ pdf ]
Rahul Garg and Rohit Khandekar,
In Proceedings, 26th International Conference on Machine Learning (ICML), 2009.
Following are the links to Matlab implementation of GraDeS and the ICML talk.
RandomAccess Benchmark for Next Generation Supercomputers. [ pdf ]
Vikas Aggarwal, Yogish Sabharwal, Rahul Garg and Philip Heidelberger,
IEEE International Parallel & Distributed Processing Symposium (IPDPS 2009). (Winner of the best paper award).
Routing and Aggregation of Messages to Optimize the Performance of the HPCC
[ pdf ]
Rahul Garg and Yogish Sabharwal,
In proceedings of the ACM/IEEE Conference on Supercomputing (SC’06) 2006. (Best paper award finalist).
o Auction Algorithms for Market
[ pdf ]
Rahul Garg and Sanjiv Kapoor,
Proceedings of the Annual ACM Symposium on Theory of Computing (STOC’04) 2004.
Journal version appeared in Mathematics of Operations Research Vol. 31, No. 4, November 2006, pp. 714-729 [ link, preprint ]
Publications organized by topics
Awards and Honours
o Best paper award at IPDPS 2009
o IBM research division award in recognition for the contributions made to the Blue Gene project
o IBM Research Fellowship, by IBM Research, New Delhi, India, for pursuing Ph.D. at Indian Institute of Technology, Delhi
o Technical program committees: IPDPS 2006, HIPC 2003, INFOCOM 2001, ICCCN 2000, ICCCN 1999.
Download my resume here.
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