Aditya Ramamoorthy

Publications

Copyright Notice: This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author’s copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.

 

Preprints

  1. Sifat Munim and Aditya Ramamoorthy, “Approximate gradient coding using convex optimization“, 2024.

Tutorials

  1. Aditya Ramamoorthy and Petros Elia, “Coded Caching and Distributed Computing: Opportunities and Challenges“, presented at IEEE Information Theory Workshop (ITW), 2018 in Guangzhou, China. (These slides are in handout format. So, minor formatting issues may exist.)

Book Chapters

  1. Shizheng Li and Aditya Ramamoorthy, “Networked Distributed Source Coding“, Theoretical Aspects of Distributed Computing in Sensor Networks”, Springer Verlag, (eds. S. Nikoletseas and J. D. P. Rolim), 2011(invited).
  2. Werner Henkel, Humberto V. Beltrao Neto and Aditya Ramamoorthy, “Rate-Compatible LDPC and Turbo Codes for Link Adaptivity and Unequal Error Protection”, Channel Coding: Theory, Algorithms, and Applications, Academic Press Library in Mobile and Wireless Communications, (eds. D. Declercq, M. Fossorier and E. Biglieri), 2014 (invited).

Journal Papers

  1. Ruoyu Meng and Aditya Ramamoorthy, “Communication Complexity of Entanglement-Assisted Multi-Party Computation“, Entropy (Special Issue on Quantum Information and Entanglement), vol. 26, no. 11, 2024.
  2. Anindya B. Das, Aditya Ramamoorthy, David J. Love and Christopher G. Brinton, “Sparsity-Preserving Encodings for Straggler-Optimal Distributed Matrix Computations at the Edge”, IEEE Internet of Things Journal, 2024 (to appear).
  3. Konstantinos Konstantinidis, Namrata Vaswani and Aditya Ramamoorthy,”Detection and Mitigation of Byzantine Attacks in Distributed Learning“, IEEE/ACM Trans. on Networking, vol. 32, no. 2, pp. 1493-1508, 2024.
  4. Anindya B. Das, Aditya Ramamoorthy, David J. Love and Christopher G. Brinton,”Distributed Matrix Computations with low-weight encodings“, IEEE Journal on Sel. Areas. in Info. Th., vol. 4, pp. 363-378, 2023 .
  5. Anindya B. Das and Aditya Ramamoorthy,”A unified treatment of partial stragglers and sparse matrices in coded matrix computation“, IEEE Journal on Sel. Areas. in Info. Th., vol. 3(2), pp. 241-256, June 2022.
  6. Praneeth Narayanamurthy, Namrata Vaswani and Aditya Ramamoorthy, “Federated over-air robust subspace tracking from missing data“, IEEE Trans. on Signal Processing, vol. 70, pp. 3906-3920, 2022.
  7. Anindya B. Das and Aditya Ramamoorthy, “Coded sparse matrix computation schemes that leverage partial stragglers“, IEEE Trans. on Information Theory, vol. 68(6), pp. 4156-4181, Jun. 2022.
  8. Aditya Ramamoorthy and Li Tang, “Numerically stable coded matrix computations via circulant and rotation matrix embeddings“, IEEE Trans. on Information Theory, vol. 68(4), pp. 2684-2703, Apr. 2022.
  9. K. Son, Aditya Ramamoorthy and Wan Choi, “Distributed Matrix Multiplication using Group Algebra for On-device Edge Computing”, IEEE Sig. Proc. Letters, 2021 (to appear).
  10. Anindya B. Das, Aditya Ramamoorthy and Namrata Vaswani, “Efficient and Robust Distributed Matrix Computations via Convolutional Coding“, IEEE Trans. on Information Theory, vol. 67(9). pp. 6266-6282, Sep. 2021.
  11. Hooshang Ghasemi and Aditya Ramamoorthy, “Asynchronous Coded Caching with Uncoded Prefetching“, IEEE/ACM Trans. on Networking, vol. 28, no. 5, pp. 2146-2159, Oct. 2020. [Simulation source code is available at this link]
  12. Konstantinos Konstantinidis and Aditya Ramamoorthy,”Resolvable Designs for Speeding up Distributed Computing“, IEEE/ACM Trans. on Networking, vol. 28, no. 4, pp. 1657-1670, Aug. 2020.
  13. Aditya Ramamoorthy, Anindya B. Das and Li Tang, “Straggler-resistant distributed matrix computation via coding theory: Removing a Bottleneck in Large-Scale Data Processing“, IEEE Sig. Proc. Mag.,  vol. 37, no. 3, pp 136-145, May 2020.
  14. Li Tang, Konstantinos Konstantinidis and Aditya Ramamoorthy, “Erasure coding for distributed matrix multiplication for matrices with bounded entries“, IEEE Comm. Letters, vol. 23(1), pp. 8-11, Jan. 2019. Source code for the simulations in this paper are available here.
  15. Ardhendu Tripathy and Aditya Ramamoorthy, “Sum-networks from incidence structures: construction and capacity analysis“, IEEE Trans. on Information Theory, vol. 64(5), pp. 3461-3480, May 2018.
  16. Li Tang and Aditya Ramamoorthy, “Coded Caching Schemes with Reduced Subpacketization from Linear Block Codes“, IEEE Trans. on Information Theory, vol. 64(4), pp. 3099-3120, Apr. 2018. [Presentation Slides]
  17. B. Li, Aditya Ramamoorthy and R. Srikant, “Mean-Field-Analysis of Coding versus Replication in Large Data Storage Systems“, ACM Trans. on Modeling and Performance Evaluation of Computing Systems, vol. 3(1), pp. 3:1-3:28, Feb. 2018.
  18. Hooshang Ghasemi and Aditya Ramamoorthy, “Improved lower bounds for coded caching“, IEEE Trans. on Information Theory, vol. 63(7), pp. 4388-4413, Jul. 2017. MATLAB source code for generating the lower bounds can be found here.
  19. Oktay Olmez and Aditya Ramamoorthy, “Fractional repetition codes with flexible repair from combinatorial designs“, IEEE Trans. on Information Theory, vol. 62(4), pp. 1565-1591, Apr. 2016.
  20. Shurui Huang and Aditya Ramamoorthy, “On the multiple unicast capacity of 3-source, 3-terminal directed acyclic networks“, IEEE/ACM Trans. on Networking, vol. 22(1), pp. 285-299, Feb. 2014.
  21. Srinivasa Salapaka, Aditya Ramamoorthy and Murti V. Salapaka, “AFM Imaging – Reliable or Not?“, IEEE Control Systems, vol. 33(6), pp. 106-118, Nov. 2013.
  22. Naveen Kumar, Aditya Ramamoorthy and Murti V. Salapaka, “Error Analysis for ML sequence detection in ISI channels with GaussMarkov Noise“, IEEE Trans. on Signal Processing, vol. 61(14), pp. 3647-3652, July 2013.
  23. Shurui Huang and Aditya Ramamoorthy, “An achievable region for the double unicast problem based on a minimum cut analysis“, IEEE Trans. on Communications, vol. 61(7), pp. 2890-2899, July 2013.
  24. Aditya Ramamoorthy and Michael Langberg, “Communicating the sum of sources over a network“, IEEE Journal on Selected Areas in Communication: Special Issue on In-network Computation: Exploring the Fundamental Limits, vol. 31(4), pp. 655-665, Apr. 2013.
  25. Shizheng Li and Aditya Ramamoorthy, “Multiple-source Slepian-Wolf coding under a linear equation correlation model“, IEEE Trans. on Communications vol. 60(9), pp. 2402-2407, Sept. 2012.
  26. Lei Ke, Aditya Ramamoorthy, Zhengdao Wang and Huarui Yin, “Degrees of freedom Region for an Interference Network with General Message Demands“, IEEE Trans. on Information Theory vol. 58(6), pp. 3787-3797, Jun. 2012.
  27. Aditya Ramamoorthy, Vwani Roychowdhury and Sudhir K. Singh, “Selfish Distributed Compression over Networks: Correlation Induces Anarchy“, IEEE Trans. on Information Theory vol. 58(5), pp. 3182-3197, May 2012.
  28. Ahmed E. Kamal, Aditya Ramamoorthy, Long Long and Shizheng Li, “Overlay protection against link failures using network coding“, IEEE/ACM Trans. on Networking vol. 19(4), pp. 1071-1084, Aug. 2011.
  29. Shurui Huang, Aditya Ramamoorthy and Muriel Medard, “Minimum cost mirror sites using network coding: Replication vs. coding at the source nodes“, IEEE Trans. on Information Theory vol. 57(2), pp. 1080-1091, Feb. 2011.
  30. Shizheng Li and Aditya Ramamoorthy, “Protection against link errors and failures using network coding in overlay networks“, IEEE Trans. on Communications, vol. 59, no. 2, pp. 518- 528, Feb. 2011.
  31. Aditya Ramamoorthy, “Minimum cost distributed source coding over a network“, IEEE Trans. on Information Theory, vol. 57(1), pp. 461-475, Jan. 2011.
  32. Shizheng Li and Aditya Ramamoorthy, “Improved compression of network coding vectors using erasure decoding and list decoding“, IEEE Comm. Letters, vol. 14(8), pp. 749-751, Aug. 2010.
  33. Naveen Kumar, Pranav Agarwal, Aditya Ramamoorthy and Murti V. Salapaka, “Maximum likelihood sequence detector for dynamic mode high density probe storage“, IEEE Trans. on Communications vol. 58(6), pp. 1686-1694, Jun. 2010.
  34. Shizheng Li and Aditya Ramamoorthy, “Rate and power allocation under the pairwise distributed source coding constraint “, IEEE Trans. on Communications, vol. 57(12), pp. 3771-3781, Dec. 2009.
  35. Cuizhu Shi and Aditya Ramamoorthy, “Design and Analysis of E2RC Codes“, IEEE Journal on Selected Areas in Communications: Special Issue on Capacity Approaching Codes, vol. 27(6), pp. 889-898, Aug. 2009.
  36. Jaehong Kim, Aditya Ramamoorthy and Steven W. Mclaughlin, “Design of Efficiently-Encodable Rate-Compatible LDPC Codes“, IEEE Trans. on Communications, vol. 57(2), pp. 365-375, Feb. 2009.
  37. Arun A. Somasundara, Aditya Ramamoorthy and Mani B. Srivastava, “Mobile Element Scheduling with Dynamic Deadlines“, IEEE Trans. on Mobile Computing, vol. 6(4), pp. 395-410, Apr. 2007.
  38. Aditya Ramamoorthy, Kamal Jain, Philip A. Chou and Michelle Effros, “Separating Distributed Source Coding from Network Coding“, IEEE Trans. on Information Theory, vol. 52(6), pp.2785-2795, Jun. 2006.
  39. Aditya Ramamoorthy, Jun Shi and Richard D. Wesel, “On the Capacity of Network Coding for Random Networks“, IEEE Trans. on Information Theory, vol. 51(8), pp. 2878-2885, Aug. 2005.
  40. Aditya Ramamoorthy, Namrata Vaswani, Santanu Chaudhury and Subhashis Banerjee, “Recognition of Dynamic Hand Gestures“, Pattern Recognition, vol. 36, (9), 2003.

Conference Papers

  1. Aditya Ramamoorthy, Ruoyu Meng and Vrinda S. Girimaji, “Leveraging Partial Stragglers within gradient coding“, Proc. of the 38th Neural Information Processing Systems (NeurIPS), 2024 (to appear).
  2. Anindya B. Das, Aditya Ramamoorthy, David J. Love and Christopher G. Brinton “Preserving Sparsity and Privacy in Straggler-Resilient Distributed Matrix Computations“, Annual Allerton Conf. on Comm., Control and Comp., 2023.
  3. Anindya B. Das, Aditya Ramamoorthy, David J. Love and Christopher G. Brinton “Distributed Matrix Computations with low-weight encodings“, IEEE Intl. Symp. on Information Theory, 2023.
  4. Anindya B. Das, Aditya Ramamoorthy, David J. Love and Christopher G. Brinton “Coded matrix computations for D2D-enabled linearized federated learning“, IEEE Intl. Conf. on Acoustics, Speech and Signal Processing, 2023.
  5. Kyungrak Son and Aditya Ramamoorthy,”Coded Matrix Computation with Gradient Coding“, IEEE Intl. Symp. on Information Theory, 2023.
  6. Konstantinos Konstantinidis and Aditya Ramamoorthy, “Aspis: Robust Detection for Distributed Learning”, IEEE Intl. Symp. on Information Theory, 2022.
  7. Anindya B. Das and Aditya Ramamoorthy, “An integrated method to deal with partial stragglers and sparse matrices in distributed computations”, IEEE Intl. Symp. on Information Theory, 2022.
  8. Praneeth Narayanamurthy, Namrata Vaswani and Aditya Ramamoorthy, “Federated over-air robust subspace tracking from missing data”, IEEE Conf. on Acoustics, Speech and Sig. Proc., 2022.
  9. Anindya B. Das and Aditya Ramamoorthy, “A unified treatment of partial stragglers and sparse matrices in coded matrix computation”, IEEE Information Theory Workshop, 2021 (invited).
  10. Aditya Ramamoorthy and Li Tang, “Numerically stable coded matrix computations via circulant and rotation matrix embeddings “, IEEE Intl. Symp. on Information Theory, 2021.
  11. Anindya B. Das and Aditya Ramamoorthy, “Coded sparse matrix computation schemes that leverage partial stragglers “, IEEE Intl. Symp. on Information Theory, 2021.
  12. Anindya B. Das, Aditya Ramamoorthy and Namrata Vaswani, “Efficient and Robust Distributed Matrix Computations via Convolutional Coding”, IEEE Intl. Symp. on Information Theory, 2021.
  13. Konstantinos Konstantinidis and Aditya Ramamoorthy, “ByzShield: An Efficient and Robust System for Distributed Training“, Fourth Conf. on Machine Learning and Systems (MLSys), 2021.
  14. Aditya Ramamoorthy, Li Tang and Pascal O. Vontobel, “Universally Decodable Matrices for Distributed Matrix-Vector Multiplication“, IEEE Intl. Symp. on Information Theory, 2019.
  15. Anindya B. Das and Aditya Ramamoorthy, “Distributed Matrix-Vector Multiplication: A Convolutional Coding Approach“, IEEE Intl. Symp. on Information Theory, 2019.
  16. Konstantinos Konstantinidis and Aditya Ramamoorthy, “CAMR: Coded Aggregated MapReduce“, IEEE Intl. Symp. on Information Theory, 2019.
  17. Anindya B. Das, Li Tang, and Aditya Ramamoorthy, “C3LES: Codes for Coded Computation that Leverage Stragglers“, IEEE Information Theory Workshop, 2018 (invited). [Presentation Slides]
  18. Ardhendu S. Tripathy and Aditya Ramamoorthy, “Zero-error Function Computation on a Directed Acyclic Network“, IEEE Information Theory Workshop, 2018.
  19. Konstantinos Konstantinidis and Aditya Ramamoorthy, “Leveraging Coding Techniques for Speeding up Distributed Computing“, IEEE Global Communications Conference (GlobeCom), 2018.
  20. Hooshang Ghasemi and Aditya Ramamoorthy, “Algorithms for Asynchronous Coded Caching“, 51st Annual Asilomar Conference on Signals, Systems and Computers, 2017 (invited).
  21. Hooshang Ghasemi and Aditya Ramamoorthy, “Asynchronous Coded Caching“,IEEE Intl. Symp. on Information Theory, 2017.
  22. Li Tang and Aditya Ramamoorthy, “Low Subpacketization Schemes for Coded Caching“,IEEE Intl. Symp. on Information Theory, 2017.
  23. Li Tang and Aditya Ramamoorthy, “Coded Caching with Low Subpacketization Levels“,IEEE Workshop on Network Coding and Applications, 2016.
  24. Ardhendu Tripathy and Aditya Ramamoorthy, “On Computation Rates for Arithmetic Sum“,IEEE Intl. Symp. on Information Theory, 2016.
  25. Li Tang and Aditya Ramamoorthy, “Coded Caching for Networks with the Resolvability Property“,IEEE Intl. Symp. on Information Theory, 2016.
  26. Hooshang Ghasemi and Aditya Ramamoorthy, “Further results on lower bounds for coded caching“,IEEE Intl. Symp. on Information Theory, 2016.
  27. Bin Li, Aditya Ramamoorthy and Rayadurgam Srikant, “Mean-Field-Analysis of Coding versus Replication in Cloud Storage Systems“, Proc. IEEE Intl. Conf. on Computer Communications (INFOCOM), 2016.
  28. Hooshang Ghasemi and Aditya Ramamoorthy, “Improved lower bounds for coded caching“,IEEE Intl. Symp. on Information Theory, 2015.
  29. Ardhendu S. Tripathy and Aditya Ramamoorthy, “Capacity of sum-networks for different message alphabets“, IEEE Intl. Symp. on Information Theory, 2015.
  30. Ardhendu S. Tripathy and Aditya Ramamoorthy, “Sum-networks from undirected graphs: construction and capacity analysis“, 52nd Allerton Conference on Communication, Control and Computing, 2014.
  31. Xin Yin, Zhao Song, Karin Dorman and Aditya Ramamoorthy,”PREMIER Turbo: Probabilistic Error-correction using Markov Inference in Errored Reads using the Turbo principle“, IEEE Global Conf. on Signal and Information Processing (invited), 2013.
  32. Oktay Olmez and Aditya Ramamoorthy, “Constructions of fractional repetition codes from combinatorial designs“, 47th Asilomar Conf. on Signals, Systems and Computers, (invited), 2013..
  33. Xin Yin, Zhao Song, Karin Dorman and Aditya Ramamoorthy,”PREMIER – Probabilistic Error-correction using Markov Inference in Errored Reads“, IEEE Intl. Symp. on Information Theory, 2013.
  34. Sayan Ghosal, Govind Saraswat, Aditya Ramamoorthy and Murti V. Salapaka, “Topography Detection Using Innovations Mismatch Method for High Speed and High Density Dynamic Mode AFM“, American Control Conference (ACC), 2013.
  35. Oktay Olmez and Aditya Ramamoorthy, “Replication based storage systems with local repair“, Intl. Symp. on Network Coding (NetCod), 2013.
  36. Oktay Olmez and Aditya Ramamoorthy, “Repairable Replication-based Storage Systems Using Resolvable Designs“, 50th Allerton Conference on Communication, Control and Computing, 2012.
  37. Shurui Huang and Aditya Ramamoorthy, “On the multiple unicast capacity of 3-source, 3-terminal multiple unicast directed acyclic networks“.  IEEE Information Theory and Applications Workshop (invited), 2012.
  38. Shurui Huang and Aditya Ramamoorthy, “An achievable region for the double unicast problem based on a minimum cut analysis“.  IEEE Information Theory Workshop, 2011.
  39. Lei Ke, Aditya Ramamoorthy, Zhengdao Wang, and Huarui Yin, “Degrees of freedom region for an interference network with general message demands“.  IEEE Intl. Symp. on Information Theory, 2011.
  40. Shizheng Li and Aditya Ramamoorthy, “Algebraic codes for Slepian-Wolf code design“, IEEE Intl. Symp. on Information Theory, 2011.
  41. Shurui Huang and Aditya Ramamoorthy, “A note on the multiple unicast capacity of directed acyclic networks“, IEEE Intl. Conf. on Comm. (ICC), 2011.
  42. Cuizhu Shi and Aditya Ramamoorthy, “Improved Combinatorial Algorithms for Wireless Information Flow“, 48th Allerton Conference on Communication, Control and Computing, 2010.
  43. Naveen Kumar, Govind Saraswat, Pranav Agarwal, Aditya Ramamoorthy and Murti V. Salapaka, “High-speed Nano-imaging using dynamic mode AFM: A MAP detection approach“, 44th Asilomar Conference on Signals, Systems and Computers, 2010.
  44. Naveen Kumar, Aditya Ramamoorthy and Murti V. Salapaka, “Performance evaluation of ML sequence detection in ISI channels with Gauss Markov Noise“, IEEE GlobeCom, 2010.
  45. Michael Langberg and Aditya Ramamoorthy, “Communicating the sum of sources in a 3-sources/3-terminals network; revisited“, IEEE Intl. Symp. on Information Theory, 2010.
  46. Shurui Huang, Aditya Ramamoorthy and Muriel Medard, “Minimum cost content distribution using network coding: Replication vs. coding at the source nodes“, IEEE Information Theory Workshop (ITW), 2010.
  47. Naveen Kumar, Pranav Agarwal, Aditya Ramamoorthy and Murti V. Salapaka, “Maximum likelihood sequence detector for dynamic mode high density probe storage“, IEEE GlobeCom, 2009.
  48. Michael Langberg and Aditya Ramamoorthy, “Communicating the sum of sources in a 3-sources/3-terminals network“, IEEE Intl. Symp. on Information Theory, 2009.
  49. Shizheng Li and Aditya Ramamoorthy, “Protection against link errors and failures using network coding in overlay networks“, IEEE Intl. Symp. on Information Theory, 2009.
  50. Aditya Ramamoorthy, Vwani Roychowdhury and Sudhir K. Singh, “Selfish Distributed Compression over Networks“, IEEE INFOCOM ’09 Mini-Conference [Extended Version]
  51. Cuizhu Shi and Aditya Ramamoorthy, “Design and Analysis of E2RC Codes using EXIT Chart“, IEEE Intl. Conf. on Communications, 2009.
  52. Cuizhu Shi and Aditya Ramamoorthy, “Protograph E2RC codes“, IEEE GlobeCom, 2008.
  53. Aditya Ramamoorthy, “Communicating the sum of sources over a network“, IEEE Intl. Symp. on Information Theory, 2008.
  54. Shizheng Li and Aditya Ramamoorthy, “Rate and power allocation under the pairwise distributed source coding constraint “, IEEE Intl. Symp. on Information Theory, 2008.
  55. Ahmed E. Kamal and Aditya Ramamoorthy, “Overlay Protection Against Link Failures Using Network Coding“, 42nd Annual Conf. on Information Sciences and Systems (CISS), 2008.
  56. Naveen Kumar, Pranav Agarwal, Aditya Ramamoorthy and Murti V. Salapaka, “Channel modeling and detector design for dynamic mode high density probe storage“, 42nd Annual Conf. on Information Sciences and Systems (CISS), 2008.
  57. Aditya Ramamoorthy, “Minimum cost distributed source coding over a network“, IEEE Intl. Symp. on Information Theory, 2007 .
  58. Aditya Ramamoorthy and Nedeljko Varnica, “Error Floors of LDPC Coded BICM“, IEEE Intl. Conf. on Communications, 2007 .
  59.  Jaehong Kim, Woonhaing Hur, Aditya Ramamoorthy and Steven W. Mclaughlin, “Design of Rate-Compatible Irregular LDPC Codes for Incremental Redundancy Hybrid ARQ Systems“, IEEE Intl. Symp. on Info. Th., 2006
  60.  Jaehong Kim, Aditya Ramamoorthy and Steven W. Mclaughlin, “Design of Efficiently-Encodable Rate-Compatible Irregular LDPC Codes“, IEEE Intl. Conf. on Communications, 2006
  61. Aditya Ramamoorthy and Richard D. Wesel, “The Single Source Two Terminal Network with Network Coding“, 9th Canadian Workshop on Information Theory, June 2005
  62. Aman Kansal, Aditya Ramamoorthy, Gregory J. Pottie and Mani B. Srivastava, “On Sensor Network Lifetime and Data Distortion“, IEEE International Symposium on Information Theory, 2005
  63. Aditya Ramamoorthy and Richard D. Wesel, “Construction of Short Block Length Irregular LDPC Codes“, IEEE Intl. Conf. on Communication, 2004
  64. Aditya Ramamoorthy, Kamal Jain, Philip A. Chou and Michelle Effros, “Separating Distributed Source Coding from Network Coding“, 42nd Allerton Conf. on Communication, Control and Computing, Oct. 2004
  65. Wen-Yen Weng, Aditya Ramamoorthy and Richard D. Wesel, “Lowering the Error Floors of High-Rate LDPC Codes by Graph Conditioning“, IEEE Vehicular Technology Conference, Fall 2004
  66. Arun A. Somasundara, Aditya Ramamoorthy and Mani B. Srivastava, “Mobile Element Scheduling for Efficient Data Collection in Wireless Sensor Networks with Dynamic Deadlines“, IEEE International Real-Time Systems Symposium, 2004
  67. Aditya Ramamoorthy, Jun Shi and Richard D. Wesel, “On the Capacity of Network Coding for Random Networks”, 41st Allerton Conference on Communication, Control and Computing, Oct. 2003
  68.  Aditya Ramamoorthy and Sugata Ghosal, “An Integrated Segmentation Technique for Interactive Image Retrieval”, IEEE Intl. Conference on Image Processing, 2000