Maya Ramanath Max-Planck Institute for Informatics Campus E1 4 66123 Saarbruecken Germany Email: ramanath@mpi-inf.mpg.de

Research Interests

Graph-based information retrieval including information extraction, efficient graph query processing and ranking. Exploration of semi-structured databases.

Current Projects

• Exploration of large, semi-structured data repositories.
• NAGA: A semantic search engine with a very large knowledge base, novel querying facilities and ranking.
• Utilizing Web 2.0 for knowledge harvesting.

Publications

2009

26. Language-model-based Ranking for Queries on RDF-Graphs (pdf)
    S. Elbassuoni, M. Ramanath, R. Schenkel, M. Sydow and G. Weikum
    Proc. of the ACM Conf. on Information and Knowledge Management (CIKM), November 2009
25. ANGIE: Active Knowledge for Interactive Exploration (demo, pdf)
    N. Preda, F. M. Suchanek, G. Kasneci, T. Neumann, M. Ramanath and G. Weikum
    Proc. of Intl. Conf. on Very Large Data Bases (VLDB), September 2009
24. Language-Model-Based Ranking in Entity-Relation Graphs (poster, pdf)
    S. Elbassuoni, M. Ramanath and G. Weikum
    Proc. of the 1st Intl. Workshop on Keyword Search on Structured Data
    (KEYS 2009, in conjunction with SIGMOD 2009), Providence, USA, June 2009
23. Generating Concise and Readable Summaries of XML documents (pdf)
    M. Ramanath, K. Sarath Kumar and G. Ifrim
    Technical Report, MPI–I–2009–5-002, May 2009
    Also available as arXiv:0910.2405v1 [cs.IR]
22. Combining Database and Information-Retrieval Techniques for Knowledge Discovery
    G. Weikum, G. Kasneci, M. Ramanath and F.M. Suchanek
    Communications of the ACM, April 2009
21. Xoom: A tool for zooming in and out of XML documents (demo, pdf)
    M. Ramanath and K. Sarath Kumar
    Proc. of Intl. Conf. on Extending Database Technology (EDBT), St. Petersburg, Russia, March 2009
20. STAR: Steiner-Tree Approximation in Relationship Graphs (long paper, pdf)
    G. Kasneci, M. Ramanath, M. Sozio, F.M. Suchanek and G. Weikum
    Proc. of 24th IEEE Intl. Conf. on Data Engineering (ICDE), Shanghai, China, March 2009

2008

19. The YAGO-NAGA Approach to Knowledge Discovery (pdf)
    G. Kasneci, M. Ramanath, F.M. Suchanek and G. Weikum
    SIGMOD Record 38(4), 2008
18. "Personalizing the Search for Knowledge" (pdf)
    M. Dudev, S. Elbassuoni, J. Luxenburger, M. Ramanath and G. Weikum
    Proc. of the 2^nd Intl. Workshop on Personalized Access, Profile Management, and Context Awareness: Databases
    (PersDB 2008, in conjunction with VLDB 2008), Auckland, New Zealand, 2008

17. "STAR: Steiner Tree Approximation in Relationship-Graphs"(pdf)
    G. Kasneci, M. Ramanath, M. Sozio, F. M. Suchanek, G. Weikum
    Technical Report MPII, 2008
16. "NAGA: Harvesting, Searching and Ranking Knowledge" (demo) (pdf)
    G. Kasneci, F.M. Suchanek, G. Ifrim, S. Elbassuoni, M. Ramanath and G. Weikum
    Proc. of the ACM SIGMOD Intl. Conf. on Management of Data, Vancouver, Canada, June 2008
15. "A Rank-Rewrite Framework for Summarizing XML Documents" (pdf, slides)
    M. Ramanath and K. Sarath Kumar
    Proc. of 2^nd Intl. Workshop on Ranking in Databases (DBRank, in conjunction with ICDE 2008), Cancun, Mexico, April 2008
14. "NAGA: Searching and Ranking Knowledge" (full presentation paper) (pdf)
    G. Kasneci, F.M. Suchanek, G. Ifrim, M. Ramanath and G. Weikum
    Proc. of 24th IEEE Intl. Conf. on Data Engineering (ICDE), Cancun, Mexico, April 2008

2007

13. "XML Selectivity Estimation" (invited)
    M. Ramanath, J. Freire and N. Polyzotis
    In Ling Liu and M. Tamer Özsu (eds.) Encyclopedia of Database Systems, Springer, 2007
12. "How NAGA Uncoils: Searching with Relations and Entities" (poster)
    G. Kasneci, F.M. Suchanek, M. Ramanath and G. Weikum
    Proc. of the WWW Conference (WWW 2007), Banff, Canada, 2007
    (tech. report version below)
11. "NAGA: Searching and Ranking Knowledge" (pdf)
    G. Kasneci, F. M. Suchanek, G. Ifrim, M. Ramanath and Gerhard Weikum
    Technical Report, MPI–I–2007–5–001, MPII, 2007

2005

10. "IMAX: Incremental Maintenance of Schema-based XML Statistics"
    M. Ramanath, L. Zhang, J. Freire and J. Haritsa
    Proc. of 21st IEEE Intl. Conf. on Data Engineering (ICDE), Tokyo, Japan, April 2005
    (tech. report version below)

2004

9. "A Flexible Infrastructure for Gathering XML Statistics and Estimating Query Cardinality"(demo)
   J. Freire, M. Ramanath and L. Zhang
   Proc of the 20th Intl. Conf. on Data Engineering (ICDE), Boston, USA, March 2004
8. "IMAX: Incremental maintenance of schema-based XML statistics" (pdf)
   M. Ramanath, L. Zhang, J. Freire and J. Haritsa
   Technical Report, TR-2004-05, DSL/SERC, 2004

2003

7. "Searching for Efficient XML-to-Relational Mappings"
   M. Ramanath, J. Freire, J. Haritsa and P. Roy
    XML Database Symposium (XSym) (in conjunction with VLDB 2003), Berlin, Germany, 2003
    (tech. report version below)
6. "Bridging the XML-Relational Divide with LegoDB: A Demonstration"(demo)
   P. Bohannon, J. Freire, J. Haritsa, M. Ramanath, P. Roy and J. Simeon
   Proc. of 19th IEEE Intl. Conf. on Data Engineering (ICDE), Bangalore, India, March 2003
5. "Searching for Efficient XML-to-Relational Mappings" (pdf)
   M. Ramanath, J. Freire, J. Haritsa and P. Roy
   Technical Report, TR-2003-01, DSL/SERC, 2003

2002

4. "LegoDB: Customizing Relational Storage for XML Documents" (demo) (pdf)
   P. Bohannon, J. Freire, J. Haritsa, M. Ramanath, P. Roy and J. Simeon
   Proc. of 28th Intl. Conf. on Very Large Data Bases (VLDB), Hong Kong, China, August 2002
3. "StatiX: Making XML Count" (pdf)
   J. Freire, J. Haritsa, M. Ramanath, P. Roy and J. Simeon
   Proc. of ACM SIGMOD Intl. Conf. on Management of Data, Madison, Wisconsin, USA, 2002

2000

2. "DIASPORA : A Highly Distributed Web-Query Processing System" (ps)
   M. Ramanath, J. Haritsa
   The WWW Journal, Spl. Issue on WWW Data Management, 2000
1. "Distributed Query Processing on the Web" (poster, full version)
   N. Gupta, J. Haritsa and M. Ramanath
   IEEE Intl. Conf. on Data Engineering (ICDE), San Diego, USA, March 2000

Theses

• "DIASPORA : A Fully Distributed Web-Query Processing System" (ps.gz)
  M. Ramanath
  Master's Thesis, SERC, Indian Institute of Science, 2000
• "Schema-based Statistics and Storage for XML" (pdf)
  M. Ramanath
  Ph.D. Thesis, SERC, Indian Institute of Science, 2006

Professional Activities

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