Ganesh Ramaswamy: Publications

Conversational Biometrics

1. G.N. Ramaswamy, J. Navratil, U.V. Chaudhari, R.D. Zilca, `The IBM system for the NIST 2002 cellular speaker verification evaluation," ICASSP-2003, Hong Kong, April 2003. (pdf)
2. R.D. Zilca, J. Navratil, G.N. Ramaswamy, ``Depitch and the role of fundamental frequency in speaker recognition," ICASSP-2003, Hong Kong, April 2003 (pdf)
3. U.V. Chaudhari, G.N. Ramaswamy, G. Potamianos, C. Neti, ``Audio-visual speaker recognition using time-varying stream reliability prediction," ICASSP-2003, Hong Kong, April 2003. (pdf)
4. J. Navratil, G.N. Ramaswamy, ``DETAC: A discriminative criterion for speaker verification," In Proc. of the ICSLP-2002, Denver, Colorado, September 2002. (pdf)
5. B. Xiang, U.V. Chaudhari, J. Navratil, G.N. Ramaswamy, R.A. Gopinath, ``Short-time Gaussianization for robust speaker verification," In Proc. of the ICASSP-2002, Orlando, Florida, May 2002. (pdf)
6. R.D. Zilca, U.V. Chaudhari, G.N. Ramaswamy, ``The sphericity measure for cellular speaker verification," Proc. of the ICASSP-2002, Orlando, Florida, May 2002. (pdf)
7. U.V. Chaudhari, J. Navratil, G.N. Ramaswamy, R.D. Zilca, ``Future speaker recognition systems: Challenges and solutions," Proc. of AUTOID-2002, Tarrytown, NY, March 2002. (pdf)
8. J. Navratil, U.V. Chaudhari, G.N. Ramaswamy, ``Speaker verification using target and background dependent linear transforms and multi-system fusion," Proc. of EUROSPEECH-01, Aalborg, Denmark, September 2001. (pdf)
9. U.V. Chaudhari, J. Navratil, G.N. Ramaswamy, S.H. Maes, ``A very large population text-independent speaker identification using transformation enhanced multi-grained models," ICASSP 2001, Salt Lake City, Utah, May 2001. (pdf)
   
   
   

   Speech Recognition, Natural Language Understanding and Dialog Management

10. G.N. Ramaswamy, J. Kleindienst, "Hierarchical Feature-Based Translation for Scalable Natural Language Understanding," ICSLP, Beijing, China, October 2000. (pdf)
11. G.N. Ramaswamy, "Multi-Modal Conversational Interfaces for Information Interaction," Human Computer Interface Consortium Conference, Fraser, Colorado, February 2000.
12. G.N. Ramaswamy, J. Kleindienst, D. Coffman, C. Neti, "A Pervasive Conversational Interface for Information Interaction," EUROSPEECH, Budapest, Hungary, September 1999. (pdf)
13. G.N. Ramaswamy, J. Kleidienst, "Automatic Identification of Command Boundaries in a Conversational Natural Language User Interface," ICSLP, Sydney, November 1998. (pdf)
14. G.N. Ramaswamy, H. Prinz, P.S. Gopalakrishnan, "A Bootstrap Technique for Building Domain-Dependent Language Models," ICSLP, Sydney, November 1998. (pdf)
15. M. Padmanabhan, E. Eide, B. Ramabhadran, G. Ramaswamy, L. Bahl, "Speech Recognition Performance on a Voicemail Transcription Task," ICASSP, Seattle, May 1998.
16. M. Padmanabhan, B. Ramabhadran, E. Eide, G. Ramaswamy, L.R. Bahl, P.S. Gopalakrishnan, S. Roukos, "Transcription of New Speaking Styles - Voicemail," DARPA Broadcast News Transcription and Understanding Workshop, Lansdowne, Virginia, February 1998.
17. M. Padmanabhan, G. Ramaswamy, B. Ramabhadran, P.S. Gopalakrishnan, C. Dunn, "Issues Involved in Voicemail Data Collection," DARPA Broadcast News Transcription and Understanding Workshop, Lansdowne, Virginia, February 1998.
    
    
    

    Wireless Communication, Pattern Recognition and Data Compression

18. G.N. Ramaswamy, P.S. Gopalakrishnan, "Compression of Acoustic Features for Speech Recognition in Network Environments," ICASSP, Seattle, May 1998. (pdf)
19. G.N. Ramaswamy, "Adaptive Classification of Interfering Signals in a Shared Radio Frequency Environment," ICPIMRC, Boston, October 1992.
    
    
    

    Dynamic Systems: Model Reduction, Estimation and System Identification

20. G.N. Ramaswamy, C. Evrard, G. C. Verghese, O. Fillatre, B.C. Lesieutre, "Extensions, Simplifications and Tests of Synchronic Modal Equivalencing (SME)," IEEE Transactions on Power Systems, Vol. 12, No. 2, pp. 896-905, May 1997.
21. G.N. Ramaswamy, L. Rouco, O. Fillatre, G.C. Verghese, P. Panciatici, B.C. Lesieutre, and D. Peltier, ``Synchronic Modal Equivalencing (SME) for Structure-Preserving Dynamic Equivalents,'' IEEE Transactions on Power Systems, Vol.11, No. 1, pp. 19-29, February 1996.
22. G. N. Ramaswamy, G.C. Verghese, L. Rouco, C. Vialas, and Christopher Demarco, ``Synchrony, Aggregation and Multi-Area Eigenanalysis,'' IEEE Transactions on Power Systems, Vol. 10, No. 4, pp. 1986-1993, November 1995.
23. G.N. Ramaswamy, G.C. Verghese, B.C. Lesieutre, ``Multi-Dimensional Synchrony and Dynamic Equivalencing," IEEE Conference on Control Applications, Albany, September 1995.
24. G.N. Ramaswamy, G.C. Verghese, L. Rouco, B.C. Lesieutre, O. Fillatre, ``Synchronic Modal Equivalencing (SME): A New Framework for Constructing Dynamic Equivalents in Power Systems,'' North American Power Symposium, Kansas State University, September 1994.
25. C. Vialas, G. C. Verghese, J. N. Rees, and G.N. Ramaswamy, ``Prony Identification of Modal Dynamic Equivalents,'' North American Power Symposium, Kansas State University, September 1994.
26. G.N. Ramaswamy, G.C. Verghese, B.C. Lesieutre, L. Rouco, ``Dynamic Equivalents for Power Systems via Extensions of Multi-Area Selective Modal Analysis,'' Research Report, Laboratory for Electromagnetic and Electronic Systems, MIT, March 1994.
27. G.N. Ramaswamy, G.C. Verghese, C. Vialas, C. Demarco, ``Going Beyond Coherency: Synchrony as a Basis for Dynamic Equivalencing in Power Systems Models,'' North American Power Symposium, Washington, D.C., October 1993.
    
    
    

    Thesis

28. G.N. Ramaswamy, "Modal Structures and Model Reduction," Ph.D. Thesis, MIT, 1995.
29. G.N. Ramaswamy, "Adaptive Classification of Interfering Signals in a Shared Radio Frequency Environment," Master's/Engineer's Thesis, MIT, 1992.
    
    
    

    Invited Talks

30. G. N. Ramaswamy, "Conversational Biometrics for Credit-Card Fraud Prevention," MasterCard Global Risk Management Symposium, Las Vegas, March 2003
31. G. N. Ramaswamy, "Pervasive Multi-Modal Conversational Systems," Spoken Language Systems Seminar, MIT Laboratory for Computer Science, March 2000.
32. G. N. Ramaswamy, "System Level Challenges in Malaysian Education," International Conference on Vision 2020, Institute for Strategic and International Studies, Malaysia, December 1993.

Contact Information:
Ganesh N. Ramaswamy
Manager, Conversational Biometrics
Thomas J. Watson Research Center
Rt. 134, Room 20-150
Yorktown Heights, NY 10598 U.S.A.
Tel.: (914) 945-1833
Fax.: (914) 945-4490
E-mail: ganeshr@us.ibm.com