Jayakrishnan Unnikrishnan

 

Jay's Photo
Audiovisual Communications Laboratory (LCAV)
School of Computer and Communication Sciences (IC)
Ecole Polytechnique Fédérale de Lausanne (EPFL)

Office: BC 340
Address: EPFL-IC-LCAV
Station 14
CH-1015 Lausanne
Switzerland
Phone: (+41) 21 693 1209
Fax: (+41) 21 693 4312
Email: jay [dot] unnikrishnan [at] epfl [dot] ch
Nationality: Indian

 

Education

2001-05 B. Tech. in Electrical Engineering, Indian Institute of Technology Madras

2005-07 M.S. in Electrical and Computer Engineering, University of Illnois at Urbana-Champaign

2007-10 Ph.D. in Electrical and Computer Engineering, University of Illnois at Urbana-Champaign

Research Interests

Signal Processing, Information Privacy, Detection and Estimation, Statistics, Information theory, Wireless Communications

A description of my research can be found here.

Biography

Curriculum vitae (updated March 2014) [pdf]

Recent Talks

Mobile Sensing – Challeges and Opportunities [slides pdf]

  • Coordinated Science Lab, University of Illinois at Urbana-Champaign, Oct. 7, 2013.
  • EECS department, Northwestern University, Oct. 8, 2013.
  • EECS department, University of Michigan, Oct. 9, 2013.
  • Qualcomm Research San Diego, Feb. 14, 2014. 

Publications

PhD Thesis

J. Unnikrishnan, “Decision-Making under Statistical Uncertainty” University of Illinois, August 2010. [pdf] [Slides from PhD defense]  
Journal publications

Published

J. Unnikrishnan and M. Vetterli, “Sampling High-Dimensional Bandlimited Fields on Low-Dimensional Manifolds” IEEE Transactions on Information Theory, vol. 59, no. 4, pp. 2103–2127, 2013. [pdf] [bib]

 J. Unnikrishnan and M. Vetterli,  “Sampling and Reconstruction of Spatial Fields using Mobile Sensors” IEEE Transactions on Signal Processing, vol. 61, no. 9, pp. 2328–2340, 2013. [pdf] [bib]

J. Unnikrishnan, V. V. Veeravalli, and S. Meyn, “Minimax Robust Quickest Change Detection” IEEE Transactions on Information Theory, vol. 57, no. 3, pp. 1604-1614, March 2011. [pdf] [bib]

J. Unnikrishnan, D. Huang, S. Meyn, A. Surana, and V. Veeravalli, “Universal and Composite Hypothesis Testing via Mismatched Divergence” IEEE Transactions on Information Theory, vol. 57, no. 3, pp. 1587-1603, March 2011. [pdf] [bib]

J. Unnikrishnan and V. V. Veeravalli, “Algorithms for Dynamic Spectrum Access with Learning for Cognitive Radio” in IEEE Transactions on Signal Processing, vol. 58, no.2, pp. 750-760, Feb. 2010. [pdf] [bib]

J. Unnikrishnan and V. V. Veeravalli, “Cooperative Sensing for Primary Detection in Cognitive Radio” in IEEE Journal of Selected Topics in Signal Processing (JSTSP), Special Issue on Signal Processing and Networking for Dynamic Spectrum Access, vol. 2, no.1, pp. 18-27, Feb. 2008. [pdf] [bib]

Submitted

J. Unnikrishnan and D. Huang, “Weak Convergence Analysis of Asymptotically Optimal Hypothesis Tests” submitted to IEEE Transactions on Information Theory, Oct. 2013. [pdf]

K. Gröchenig, J. L. Romero, J. Unnikrishnan, and Martin Vetterli, “On Minimal Trajectories for Mobile Sampling of Bandlimited Fields” submitted to Applied and Computational Harmonic Analysis, Dec. 2013. [ arxiv link ]

J. Unnikrishnan, “Asymptotically Optimal Matching of Observation Sequences to Source Distributions and Training Sequences” submitted to IEEE Transactions on Information Theory, Jan. 2014. [pdf]

 

Conference publications

F. M. Naini,  J. Unnikrishnan, P.  Thiran and M. Vetterli, “Privacy-Preserving Function Computation by Exploitation of Friendships in Social Networks”  to be presented at  39th IEEE International Conference on Acoustics, Speech, and Signal Processing, Florence, Italy, May 4-9, 2014. [pdf]

J. Unnikrishnan and  M. Prelee, “Sampling 2-D Signals on a Union of Lattices that Intersect on a Lattice” to be presented at 39th IEEE International Conference on Acoustics, Speech, and Signal Processing, Florence, Italy, May 4-9, 2014. [pdf]

J. Unnikrishnan and F. M. Naini, “ De-anonymizing Private Data by Matching Statistics” presented at Allerton Conference  on Communication, Control, and Computing, Monticello, Illinois, USA, Oct. 2-4, 2013. [pdf]

J. Unnikrishnan and M. Vetterli, “On Optimal Sampling Trajectories for Mobile Sensing” in Proc. of  10th International Conference on Sampling Theory and Applications (SAMPTA), Bremen, Germany, 2013. [ pdf]

T. C. Lee and J. Unnikrishnan, “Monitoring Network Structure and Content Quality of Signal Processing Articles on Wikipedia” in Proc. of the 38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Vancouver, Canada, 2013. [pdf][Link to software and ranking lists]

J. Unnikrishnan, “On Optimal Two Sample Homogeneity Tests for Finite Alphabets” in Proc. of IEEE International Symposium on Information Theory (ISIT), Boston, July 2012. [pdf] [bib]

J. Unnikrishnan and M. Vetterli, “On Sampling a High-Dimensional Bandlimited Field on a Union of Shifted Lattices”  in Proc. of IEEE International Symposium on Information Theory (ISIT), Boston, July 2012.[pdf] [bib]

J. Unnikrishnan and M. Vetterli, “Sampling and reconstructing spatial fields using mobile sensors” in Proc. of 37th International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Kyoto, Japan, 2012. [pdf]

J. Unnikrishnan and M. Vetterli, “Sampling Trajectories for Mobile Sensing” in Proc. of Forty-Ninth Annual Allerton Conference on Communication, Control, and Computing, Monticello, Illinois, USA, Sep. 28-30, 2011. [pdf]

J. Unnikrishnan, “Model-fitting in the presence of outliers” presented at IEEE International Symposium on Information Theory, St. Petersburg, Jul- Aug. 2011. [pdf]

J. Unnikrishnan, S. Meyn, and V. Veeravalli, “On Thresholds for Robust Goodness-of-Fit Tests” in  Proc. of IEEE Information Theory Workshop, Dublin, Aug. 2010. [pdf]

W. Chen, D. Huang, A. Kulkarni, J. Unnikrishnan, Q. Zhu, P. Mehta, S. Meyn, and A. Wierman, “Approximate Dynamic Programming Based on ODE and Diffusion Approximations for Nonlinear Stochastic Systems” in Proc. of 48th IEEE Conference on Decision and Control, Shanghai, China, Dec. 2009. [link]

J. Unnikrishnan, V. V. Veeravalli, and S. Meyn, “Least Favorable Distributions for Robust Quickest Change Detection” in Proc. of 2009 IEEE International Symposium on Information Theory, Seoul, Korea, June 28th – July 3rd, 2009. [pdf]

D. Huang, J. Unnikrishnan, S. Meyn, V. V. Veeravalli, and A. Surana, “Statistical SVMs for robust detection, supervised learning, and universal classification” in Proc. of 2009 IEEE Information Theory Workshop, Volos, Greece, June 10th – 12th, 2009. [pdf]

J. Unnikrishnan and V. V. Veeravalli, “Dynamic Spectrum Access Policies for Cognitive Radio” in Proc. of 47th IEEE Conference on Decision and Control, Cancun, Mexico, Dec. 2008. [pdf]

J. Unnikrishnan and V. V. Veeravalli, “Dynamic spectrum access with learning for cognitive radio” in Proc. of Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA, Oct. 2008. [pdf]

J. Unnikrishnan and V. V. Veeravalli, “Cooperative Spectrum Sensing and Detection for Cognitive Radio” in Proc. of IEEE-GLOBECOM 2007, Washington D. C., Nov 2007. [pdf]

J. Unnikrishnan and V. V. Veeravalli, “Decentralized Detection with Correlated Observations” in Proc. of Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA, Nov. 2007. [pdf]