I was born in New Delhi, India. I received the B.E. degree in Electronics and Communication Engineering from Mysore University, the M.S. degree in Electrical Engineering from Washington University, St. Louis, USA, and the Ph. D. degree in Electronics from the Indian Institute of Technology, New Delhi, India. I joined IBM Research India in 1998 where I currently manage the Information Quality and Discovery Group.

I enjoy teaching and interacting with students. I often teach at IIT Delhi. I also like writing on technology in everyday life. My monthly series Folk Technology appeared in the i.t. magazine in 2008.

Research Interests

• Noisy Data Analytics, Unstructured Information Management, Statistical Natural Language Processing, Text and Data Mining, Information Theory, Speech Technologies.

Noisy Text Analytics:

Text produced in informal settings (email, blogs, tweets, SMS, chat) and text which results from processing (speech recognition, OCR) is inherently noisy. Operations like IR, IE, Mining, NLP need new techniques to contend with the noise. Over the years, apart from text, I have searched for informative patterns in signals ranging from speech, image and text to communication pulses. My team's work on Noisy Text Analytics has been recognized as an IBM research accomplishment in 2011. Read more about my research here.

FAQ Retrieval Task at FIRE 2011:

SMS Based FAQ Retrieval Task, Forum for Information Retrieval Evaluation (FIRE), Mumbai, Dec 2-4, 2011

STIR 2012 Workshop along with ICDE:

Tutorial on Noisy Text Analytics:

Noisy Text Analytics, NAACL HLT, Los Angeles, 1 June 2010 [pdf presentation slides]

IJDAR Special Issues on Noisy Text Analytics:

Vol 14, No 2, June 2011: Guest Editors: L. V. Subramaniam, D. Lopresti, S. Roy, K. Schulz

Read my Counter Terrorism Series:

Fighting terror series