* Ph. D. from Centre for Applied Research in Electronics, Indian Institute of Technology, Delhi, India, 1999.
* M.S. in Electrical Engineering, Washington University, St. Louis, USA, 1993.
* B.E. in Electronics and Communication, P. E. S. College of Engineering, University of Mysore, India, 1991.
* Research Staff Member, IBM Research - India, 1998 onwards
International Journal on Document Analysis and Recognition (IJDAR) 2011-2013
Multilingual Information Access in South Asian Languages, Lecture Notes in Computer Science, Apr. 2013 (jointly with P. Majumder, M. Mitra, P. Bhattacharyya, D. Contractor and P. Rosso)
FIRE 2013: Forum for Information Retrieval
* RaFusion 2013: 1st Workshop on Reliability-Aware Data Fusion in Participatory Networks
* AND 2012: 6th Workshop on Analytics for Noisy Unstructured Text Data
* STIR 2012: 1st Workshop on Spatio Temporal Data Integration and Retrieval
* IIWeb 2011: 8th Workshop on Information Integration on the Web
* AND 2010: 4th Workshop on Analytics for Noisy Unstructured Text Data
* AND 2009: 3rd Workshop on Analytics for Noisy Unstructured Text Data
* AND 2008: 2nd Workshop on Analytics for Noisy Unstructured Text Data
* AND 2007: Workshop on Analytics for Noisy Unstructured Text Data
2010: Conference on Computational Linguistics
* DAS 2010 2012 2014: Document Analysis Systems
* DRR 2008 2009 2010 2011 2012 2013 2014 2015: Document Recognition and Retrieval Conference
* ICWSM 2012: AAAI Conference on Weblogs and Social Media
* WSDM 2010 2011: Web Search and Data Mining Conference
* WIC 2010 2011 2012 2013: Web Intelligence Conference
* WWW 2011 2012: World Wide Web Conference
* ACMB Compute 2010: ACM Bangalore Compute
* FSTAS 2007: Workshop on Finite-State Techniques and Approximate Search
* IHCI 2009 2010: IEEE Conf on Intelligent Human Computer Interaction
* IIWeb 2009: Workshop on Information Integration on the Web
* ODBASE 2011: Conference on Ontologies, Databases and Applications of Semantics
* WISS 2010: IEEE Workshop on Information and Software as Services* WWW PhD Symposium 2011: World Wide Web PhD Symposium
* Folk Technology monthly series in the it magazine, 2009.
* Blog, articles in online portals, magazines and newspapers.
* Machine Learning in Document Analysis and Recognition by Simone Marinai and Hiromichi Fujisawa (Eds.), Springer, 2008, Review in IAPR Newsletter, Vol. 30, No. 4, Oct. 2008.
* The Text Mining Handbook by Ronen Feldman and James Sanger, Cambridge University Press, 2007, Review in IAPR Newsletter, Vol. 30, No. 1, Jan. 2008.
* Applied Combinatorics on Words by M. Lothaire, Cambridge University Press, Encyclopedia of Mathematics and its Applications Series, 2005, Review in IAPR Newsletter, Vol. 29, No. 3, Jul. 2007.
* Reviewer for IEEE Transactions on Multimedia, IEEE Transactions on Biomedical Engineering, Journal of Biomedical Informatics, International Journal on Document Analysis and Recognition, IJCAI, AAAI, SDM, CIKM, ICDM, DRR, ICC, NCC, ICASSP, etc.
* M. Tech Thesis evaluation committee in EE (2000-2001, 2003-2010) and CSE (2002-2003, 2006) at IIT Delhi.
Invited Talk, IIIT Delhi, India, Aug 30, 2012
Big Data Forum, New Delhi, India, Jul 19, 2012
Tutorial, NAACL HLT, Los Angeles, CA, USA, Jun 1, 2010
Keynote, INCORD 2010, HBTI, Kanpur, Mar 20, 2010
Tutorial, Naukri.com, Noida, Jan 22, 2010
Invited Talk, Workshop on Text Mining, New Delhi, Dec 19, 2009
Panelist, InfoVision, Mumbai, Dec 18, 2007
Invited Talk, IBM Technology Day, IIT Roorkee, Nov 3, 2007
Invited Talk, Workshop on Natural Lang. Apps. in Enterprise Class Systems, TCS Gurgaon, Oct 4, 2007
Mathematica Lecture Series, Dept. of Mathematics, IIT Delhi, Apr 4, 2006
IEEE Clairvoyance Lecture Series, Tryst 2006, IIT Delhi, Feb 4, 2006
Invited Talk, Workshop on Bioinformatics, Noida, India, Sep 8, 2005
Colloquium, Department of Computer Science, University of New Orleans, USA, Nov 5, 2003
CSPL Seminar Series, EECL, University of Michigan, Ann Arbor, MI, USA, Sep 17, 1998
Invited Talk, Naval Physical and Oceanographic Laboratory (NPOL), Cochin, Dec, 1997