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

I have joined the faculty of the CSE department, IIT-Delhi in March, 2011.

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.
• Opinion Mining.

Courses

Seminar "Hot Topics in Information Retrieval" with Ralf Schenkel (Winter Semester, 2010-11)

Publications

2011

• Query Relaxation for Entity-Relationship Search (to appear)
  S. Elbassuoni, M. Ramanath and G. Weikum
  Proc. of the Extended Semantic Web Conference (ESWC), 2011
• IQ: The Case for Iterative Querying for Knowledge (pdf)
  Y. Mass, M. Ramanath, Y. Sagiv and G. Weikum
  Proc. of the Biennial Conference on Innovative Data Systems Research (CIDR), Jan. 2011

2010

• Searching RDF Graphs with SPARQL and Keywords (pdf)
  S. Elbassuoni, M. Ramanath, R. Schenkel and G. Weikum
  IEEE Data Engg. Bulleting, March 2010
• Language-Model-based Pro/Con Classification of Political Text (poster)
  R. Awadallah, M. Ramanath and G. Weikum
  Proc. of SIGIR, July 2010

2009

• 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
• 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
• 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
• 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]
• 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
• 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
• 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

• The YAGO-NAGA Approach to Knowledge Discovery (pdf)
  G. Kasneci, M. Ramanath, F.M. Suchanek and G. Weikum
  SIGMOD Record 38(4), 2008
• 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

• STAR: Steiner Tree Approximation in Relationship-Graphs(pdf)
  G. Kasneci, M. Ramanath, M. Sozio, F. M. Suchanek, G. Weikum
  Technical Report MPII, 2008
• 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
• 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
• 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

• 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
• 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)
• 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

• 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

• 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
• 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

• 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)
• 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
• 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

• 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
• 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

• DIASPORA: A Highly Distributed Web-Query Processing System (ps)
  M. Ramanath, J. Haritsa
  The WWW Journal, Spl. Issue on WWW Data Management, 2000
• 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

• WWW 2007, 2008, 2010
• CIKM 2008, 2009
• EDBT 2011
• VLDB 2012 (E&A track)

Personal