A recent picture from ACM GIS 2007

Jagan Sankaranarayananジャガン


Ph.D., 2008



Contact Information

Mail
Department of Computer Science
Room 4431, AV Williams Building,
University of Maryland
College Park, MD-20742
Phone: (301) 405-1769
E-mail:jagan{at}cs.umd.edu

Biography & Research

I recently got my doctoral degree in Computer Science from the University of Maryland. My advisor is Prof. Hanan Samet. I was a teaching assistant for CMSC 420 in Fall 2005, CMSC 725 in Fall 2006, and CMSC 828M in Spring 2008. I am currently involved in developing applications and datasets for the SAND database system. A description of the SAND system can be found here. I graduated from RV College of Engineering, Bangalore with a bachelors degree in Computer Science.

New: I am the recipient of the Dean's fellowship award for excellence in research for the year 2007-2008. This coming year, I will co-organizing this lecture series.

New: My recent paper titled "Scalable network distance browsing in spatial databases" has been chosen to receive a "best paper" award in the SIGMOD 2008 conference in Vancouver, British Columbia, Canada, June 2008.

My research interests include:
    
  • Spatial Data Structures
  • Spatial Databases
  • Spatial Networks
  • Spatio-textual search engines
    •

    Publications [DBLP]

    1. H. Samet, J. Sankaranarayanan, A. Alborzi,
      Scalable network distance browsing in spatial databases.
      In Proceedings of the ACM SIGMOD Conference, Vancouver, Canada, June 2008. Also University of Maryland Computer Science Technical Report TR-4865, April 2007. [link]
      To appear. (Best paper award)
      Categories: [shortest path, nearest neighbor finding]

    2. M. D. Lieberman, J. Sankaranarayanan, H. Samet,
      A fast similarity join algorithm using graphics processing units.
      In Proceedings of the 24rd IEEE International Conference on Data Engineering, Cancun, Mexico, April 2008. [link]
      Categories: [parallel processing]

    3. J. Sankaranarayanan, H. Alborzi, H. Samet,
      Efficient query processing on spatial networks.
      In Proceedings of the 13th ACM International Symposium on Advances in Geographic Information Systems, pages 200-209, Bremen, Germany, November 2005.[link]
      Categories: [shortest path, nearest neighbor finding]

    4. J. Sankaranarayanan, H. Alborzi, H. Samet,
      Enabling query processing on spatial networks.
      In Proceedings of the 22nd IEEE International Conference on Data Engineering, page 163, Atlanta, GA, April 2006.[link]
      Categories: [shortest path, nearest neighbor finding]

    5. J. Sankaranarayanan, H. Alborzi, H. Samet,
      Distance join queries on spatial networks.
      In Proceedings of the 14th ACM International Symposium on Advances in Geographic Information Systems, pages 211-218, Arlington, VA, November 2006.[link]
      Categories: [shortest path, nearest neighbor finding]

    6. J. Sankaranarayanan, H. Samet, A. Varshney,
      Fast $k$-neighborhood algorithm for large point-clouds.
      In M. Botsch, B. Chen, M. Pauly, and M. Zwicker, editors, Proceedings of the 3rd IEEE/Eurographics Symposium on Point-Based Graphics, pages 75-84, Boston, MA, July 2006.[link]
      Categories: [nearest neighbor finding, computer graphics]

    7. J. Sankaranarayanan, H. Samet, A. Varshney,
      A fast all nearest neighbor algorithm for applications involving large point-clouds.
      Computers & Graphics, 31(2):157-174, April 2007. [link]
      Categories: [nearest neighbor finding, computer graphics]

    8. M. D. Lieberman, H. Samet, J. Sankaranarayanan, J. Sperling,
      STEWARD: architecture of a spatio-textual search engine.
      In Proceedings of the 15th ACM International Symposium on Advances in Geographic Information Systems, Seattle, WA, November 2007.[link]
      To Appear.
      Categories: [ spatio-textual search engine]

    9. H. Samet, M. D. Lieberman, J. Sankaranarayanan, J. Sperling,
      STEWARD: Demo of spatio-textual extraction on the web aiding the retrieval of documents.
      In Proceedings of the 7th National Conference on Digital Government Research, pages 300-301, Philadelphia, PA, May 2007.[link]
      Categories: [digital government]

    10. M. D. Lieberman, J. Sankaranarayanan, H. Samet, J. Sperling,
      Augmenting spatio-textual search with an infectious disease ontology.
      In IIMAS'08: Workshop on Information Integration Methods, Architectures, and Systems, Cancun, Mexico, April 2008. [link]
      To appear.
      Categories: [spatio-textual search engine]

    11. H. Samet, A. Phillippy, J. Sankaranarayanan,
      Knowledge discovery using the SAND spatial browser.
      In Proceedings of the 7th National Conference on Digital Government Research, pages 284-285, Philadelphia, PA, May 2007. [link]
      Categories: [digital government]

    12. H. Samet, F. Brabec, J. Sankaranarayanan,
      Importing abstract spatial data into the SAND database system.
      In Proceedings of the 4th National Conference on Digital Government Research, pages 285-286, Seattle, WA, May 2004. [link]
      Categories: [spatial database, digital government]

    13. J. Sankaranarayanan, E. Tanin, H. Samet, F. Brabec,
      Accessing diverse geo-referenced data sources with the SAND spatial DBMS.
      In Proceedings of the 3rd National Conference on Digital Government Research, pages 331-334, 297, Boston, MA, May 2003. [link]
      Categories: [spatial database, digital government]
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