Luis Gravano's Publications and Patents

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Patents

  1. String Predicate Selectivity Estimation, S. Chaudhuri, V. Ganti, and L. Gravano, United States Patent 7,149,735, issued December 12, 2006
  2. Systems and Methods for Using Anchor Text as Parallel Corpora for Cross-Language Information Retrieval, L. Gravano and M. Henzinger, United States Patent 7,146,358, issued December 5, 2006
  3. Method of Building Multidimensional Workload-Aware Histograms, S. Chaudhuri, N. Bruno, and L. Gravano, United States Patent 7,007,039, issued February 28, 2006
  4. Method for Cost-Based Optimization over Multimedia Repositories, S. Chaudhuri and L. Gravano, United States Patent 5,806,061, issued September 8, 1998
  5. Method of Packet Routing in Torus Networks with Two Buffers per Edge, R. Cypher and L. Gravano, United States Patent 5,444,701, issued August 22, 1995

Papers in Refereed Journals

  1. Classification-Aware Hidden-Web Text Database Selection, P. Ipeirotis and L. Gravano, in ACM Transactions on Information Systems, vol. 26, no. 2, art. 6, Mar. 2008.
  2. Towards a Query Optimizer for Text-Centric Tasks, P. Ipeirotis, E. Agichtein, P. Jain, and L. Gravano, in ACM Transactions on Database Systems, vol. 32, no. 4, Nov. 2007.
  3. Modeling and Managing Changes in Text Databases, P. Ipeirotis, A. Ntoulas, J. Cho, and L. Gravano, in ACM Transactions on Database Systems, vol. 32, no. 3, Aug. 2007.
  4. Optimizing Top-k Selection Queries over Multimedia Repositories, S. Chaudhuri, L. Gravano, and A. Marian, in IEEE Transactions on Knowledge and Data Engineering, vol. 16, no. 8, Aug. 2004.
  5. Evaluating Top-k Queries over Web-Accessible Databases, A. Marian, N. Bruno, and L. Gravano, in ACM Transactions on Database Systems, vol. 29, no. 2, June 2004.
  6. Learning to Find Answers to Questions on the Web, E. Agichtein, S. Lawrence, and L. Gravano, in ACM Transactions on Internet Technology, vol. 4, no. 2, May 2004.
  7. QProber: A System for Automatic Classification of Hidden-Web Databases, L. Gravano, P. Ipeirotis, and M. Sahami, in ACM Transactions on Information Systems, vol. 21, no. 1, Jan. 2003.
  8. Top-k Selection Queries over Relational Databases: Mapping Strategies and Performance Evaluation, N. Bruno, S. Chaudhuri, and L. Gravano, in ACM Transactions on Database Systems, vol. 27, no. 2, Jun. 2002.
  9. GlOSS: Text-Source Discovery over the Internet, L. Gravano, H. Garcia-Molina, A. Tomasic, in ACM Transactions on Database Systems, vol. 24, no. 2, Jun. 1999.
  10. The Stanford Digital Library Metadata Architecture, M. Baldonado, C.-C. K. Chang, L. Gravano, and A. Paepcke, in International Journal on Digital Libraries, vol. 1, no. 2, Sep. 1997.
  11. Data Structures for Efficient Broker Implementation, A. Tomasic, L. Gravano, C. Lue, P. Schwarz, and L. Haas, in ACM Transactions on Information Systems, vol. 15, no. 3, Jul. 1997.
  12. Storage-Efficient, Deadlock-Free Packet Routing Algorithms for Torus Networks, R. Cypher and L. Gravano, in IEEE Transactions on Computers, vol. 43, no. 12, Dec. 1994.
  13. Requirements for Deadlock-Free, Adaptive Packet Routing, R. Cypher and L. Gravano, in SIAM Journal on Computing, vol. 23, no. 6, Dec. 1994.
  14. Adaptive Deadlock- and Livelock-Free Routing with All Minimal Paths in Torus Networks, L. Gravano, G. Pifarre, P. Berman, and J. Sanz, in IEEE Transactions on Parallel and Distributed Systems, vol. 5, no. 12, Dec. 1994.
  15. Adaptive Deadlock- and Livelock-Free Routing in the Hypercube Network, G. Pifarre, L. Gravano, G. Denicolay, J. Sanz, in IEEE Transactions on Parallel and Distributed Systems, vol. 5, no. 11, Nov. 1994.
  16. Fully Adaptive Minimal Deadlock-Free Packet Routing in Hypercubes, Meshes, and Other Networks: Algorithms and Simulations, G. Pifarre, L. Gravano, S. Felperin, and J. Sanz, in IEEE Transactions on Parallel and Distributed Systems, vol. 5, no. 3, Mar. 1994.

Book Chapter

  1. XML & Data Streams, N. Bruno, L. Gravano, N. Koudas, and D. Srivastava. Chapter 4 in "Stream Data Management," edited by N. Chaudhry, K. Shaw, and M. Abdelguerfi, Series: Advances in Database Systems, Volume 30, pages 59-81, Springer, 2005.

Papers in Refereed Conferences

  1. Learning Similarity Metrics for Event Identification in Social Media, H. Becker, M. Naaman, and L. Gravano, to appear in Proc. of the 2010 ACM International Conference on Web Search and Data Mining (WSDM 2010), 2010.
  2. Join Optimization of Information Extraction Output: Quality Matters!, A. Jain, P. Ipeirotis, A. Doan, and L. Gravano, in Proc. of the 25th IEEE International Conference on Data Engineering (ICDE 2009), 2009.
  3. Answering General Time-Sensitive Queries, W. Dakka, L. Gravano, and P. Ipeirotis, in Proc. of the 17th ACM Conference on Information and Knowledge Management (CIKM 2008), 2008 (short 2-page "poster" paper).
  4. Optimizing SQL Queries over Text Databases, A. Jain, A. Doan, and L. Gravano, in Proc. of the 24th IEEE International Conference on Data Engineering (ICDE 2008), 2008.
  5. Efficient Summarization-Aware Search for Online News Articles, W. Dakka and L. Gravano, in Proc. of the 2007 ACM+IEEE Joint Conference on Digital Libraries (JCDL 2007), 2007.
  6. Efficient Keyword Search Across Heterogeneous Relational Databases, M. Sayyadian, H. LeKhac, A. Doan, and L. Gravano, in Proc. of the 23rd IEEE International Conference on Data Engineering (ICDE 2007), 2007.
  7. SQL Queries Over Unstructured Text Databases, A. Jain, A. Doan, and L. Gravano, in Proc. of the 23rd IEEE International Conference on Data Engineering (ICDE 2007), 2007 (short 3-page "poster" paper).
  8. To Search or to Crawl? Towards a Query Optimizer for Text-Centric Tasks ("Best Paper" Award), P. Ipeirotis, E. Agichtein, P. Jain, and L. Gravano, in Proc. of the 2006 ACM SIGMOD International Conference on Management of Data, 2006.
  9. Modeling and Managing Content Changes in Text Databases ("Best Paper" Award), P. Ipeirotis, A. Ntoulas, J. Cho, and L. Gravano, in Proc. of the 21st IEEE International Conference on Data Engineering (ICDE 2005), 2005.
  10. When one Sample is not Enough: Improving Text Database Selection Using Shrinkage, P. Ipeirotis and L. Gravano, in Proc. of the 2004 ACM SIGMOD International Conference on Management of Data, 2004.
  11. Selectivity Estimation for String Predicates: Overcoming the Underestimation Problem, S. Chaudhuri, V. Ganti, and L. Gravano, in Proc. of the 20th IEEE International Conference on Data Engineering (ICDE 2004), 2004.
  12. Categorizing Web Queries According to Geographical Locality,  L. Gravano, V. Hatzivassiloglou, and R. Lichtenstein, in Proc. of the 12th ACM Conference on Information and Knowledge Management (CIKM 2003), 2003.
  13. Efficient IR-Style Keyword Search over Relational Databases, V. Hristidis, L. Gravano, and Y. Papakonstantinou, in Proc. of the 29th International Conference on Very Large Data Bases (VLDB 2003), 2003.
  14. Text Joins in an RDBMS for Web Data Integration, L. Gravano, P. Ipeirotis, N. Koudas, and D. Srivastava, in Proc. of  the 12th International World-Wide Web Conference (WWW 2003), 2003.
  15. Querying Text Databases for Efficient Information Extraction ("Best Student Paper" Award), E. Agichtein and L. Gravano, in Proc. of the 19th IEEE International Conference on Data Engineering (ICDE 2003), 2003 [errata].
  16. Navigation- vs. Index-Based XML Multi-Query Processing, N. Bruno, L. Gravano, N. Koudas, and D. Srivastava, in Proc. of the 19th IEEE International Conference on Data Engineering (ICDE 2003), 2003.
  17. Text Joins for Data Cleansing and Integration in an RDBMS, L. Gravano, P. Ipeirotis, N. Koudas, and D. Srivastava, in Proc. of the 19th IEEE International Conference on Data Engineering (ICDE 2003), 2003 (short 3-page "poster" paper).
  18. Distributed Search over the Hidden-Web: Hierarchical Database Sampling and Selection, P. Ipeirotis and L. Gravano, in Proc. of the 28th International Conference on Very Large Data Bases (VLDB 2002), 2002.
  19. Evaluating Top-k Queries over Web-Accessible Databases, N. Bruno, L. Gravano, and A. Marian, in Proc. of the 18th IEEE International Conference on Data Engineering (ICDE 2002), 2002.
  20. Extending SDARTS: Extracting Metadata from Web Databases and Interfacing with the Open Archives Initiative, P. Ipeirotis, T. Barry, and L. Gravano, in Proc. of the Second ACM+IEEE Joint Conference on Digital Libraries (JCDL 2002), 2002.
  21. Approximate String Joins in a Database (Almost) for Free, L. Gravano, P. Ipeirotis, H. V. Jagadish, N. Koudas, S. Muthukrishnan, and D. Srivastava, in Proc. of the 27th International Conference on Very Large Data Bases (VLDB 2001), 2001 [errata].
  22. Probe, Count, and Classify: Categorizing Hidden Web Databases, P. Ipeirotis, L. Gravano, and M. Sahami, in Proc. of the 2001 ACM SIGMOD International Conference on Management of Data, 2001.
  23. STHoles: A Multidimensional Workload-Aware Histogram, N. Bruno, S. Chaudhuri, and L. Gravano, in Proc. of the 2001 ACM SIGMOD International Conference on Management of Data, 2001.
  24. SDLIP + STARTS = SDARTS: A Protocol and Toolkit for Metasearching, N. Green, P. Ipeirotis, and L. Gravano, in Proc. of the First ACM+IEEE Joint Conference on Digital Libraries (JCDL 2001), 2001.
  25. PERSIVAL, a System for Personalized Search and Summarization over Multimedia Healthcare Information, K. McKeown, S.-F. Chang, J. Cimino, S. Feiner, C. Friedman, L. Gravano, V. Hatzivassiloglou, S. Johnson, D. Jordan, J. Klavans, A. Kushniruk, V. Patel, and S. Teufel, in Proc. of the First ACM+IEEE Joint Conference on Digital Libraries (JCDL 2001), 2001.
  26. Learning Search Engine Specific Query Transformations for Question Answering, E. Agichtein, S. Lawrence, and L. Gravano, in Proc. of the 10th International World-Wide Web Conference (WWW10), 2001.
  27. Computing Geographical Scopes of Web Resources, J. Ding, L. Gravano, and N. Shivakumar, in Proc. of the 26th International Conference on Very Large Data Bases (VLDB'00), 2000. (PDF version)
  28. An Investigation of Linguistic Features and Clustering Algorithms for Topical Document Clustering, V. Hatzivassiloglou, L. Gravano, and A. Maganti, in Proc. of the 23rd ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR'00), 2000. (PDF version)
  29. Snowball: Extracting Relations from Large Plain-Text Collections, E. Agichtein and L. Gravano, in Proc. of the 5th ACM International Conference on Digital Libraries (DL'00), 2000. (PDF version)
  30. Evaluating Top-k Selection Queries, S. Chaudhuri and L. Gravano, in Proc. of the 25th International Conference on Very Large Data Bases (VLDB'99), 1999. (PDF version)
  31. Merging Ranks from Heterogeneous Internet Sources, L. Gravano and H. Garcia-Molina, in Proc. of the 23rd International Conference on Very Large Data Bases (VLDB'97), 1997. (PDF version)
  32. Metadata for Digital Libraries: Architecture and Design Rationale, M. Baldonado, C.-C. K. Chang, L. Gravano, and A. Paepcke, in Proc. of the 2nd ACM International Conference on Digital Libraries (DL'97), 1997.
  33. STARTS: Stanford Proposal for Internet Meta-Searching, L. Gravano, C.-C. K. Chang, H. Garcia-Molina, and A. Paepcke, in Proc. of the 1997 ACM SIGMOD International Conference on Management of Data, 1997.
  34. dSCAM: Finding Document Copies across Multiple Databases, H. Garcia-Molina, L. Gravano, and N. Shivakumar, in Proc. of the 4th International Conference on Parallel and Distributed Information Systems (PDIS'96), 1996.
  35. Optimizing Queries over Multimedia Repositories, S. Chaudhuri and L. Gravano, in Proc. of the 1996 ACM SIGMOD International Conference on Management of Data, 1996.
  36. Generalizing GlOSS to Vector-Space Databases and Broker Hierarchies, L. Gravano and H. Garcia-Molina, in Proc. of the 21st International Conference on Very Large Data Bases (VLDB'95), 1995.
  37. Precision and Recall of GlOSS Estimators for Database Discovery, L. Gravano, H. Garcia-Molina, and A. Tomasic, in Proc. of the 3rd International Conference on Parallel and Distributed Information Systems (PDIS'94), 1994 (short paper).
  38. The Effectiveness of GlOSS for the Text-Database Discovery Problem, L. Gravano, H. Garcia-Molina, and A. Tomasic, in Proc. of the 1994 ACM SIGMOD International Conference on Management of Data, 1994.
  39. Requirements for Deadlock-Free, Adaptive Packet Routing, R. Cypher and L. Gravano, in Proc. of the 11th ACM Symposium on Principles of Distributed Computing (PODC '92), 1992. (PDF version)
  40. Adaptive, Deadlock-Free Packet Routing in Torus Networks with Minimal Storage, R. Cypher and L. Gravano, in Proc. of the 1992 International Conference on Parallel Processing (ICPP '92), 1992.
  41. Adaptive Deadlock- and Livelock-Free Routing with All Minimal Paths in Torus Networks, P. Berman, L. Gravano, G. Pifarre, and J. Sanz, in Proc. of the 4th Annual ACM Symposium on Parallel Algorithms and Architectures (SPAA '92), 1992. (PDF version)
  42. Adaptive Deadlock-Free Worm-Hole Routing in Hypercubes, L. Gravano, G. Pifarre, G. Denicolay, and J. Sanz, in Proc. of the 6th International Parallel Processing Symposium (IPPS '92), 1992 (short paper).
  43. Fully-Adaptive Routing: Packet Switching Performance and Worm-Hole Algorithms, S. Felperin, L. Gravano, G. Pifarre, and J. Sanz, in Proc. of Supercomputing '91, 1991. (PDF version)
  44. Fully-Adaptive Minimal Deadlock-Free Packet Routing in Hypercubes, Meshes, and Other Networks, G. Pifarre, L. Gravano, S. Felperin, and J. Sanz, in Proc. of the 3rd Annual ACM Symposium on Parallel Algorithms and Architectures (SPAA '91), 1991. (PDF version)

Papers in Refereed Workshops and Demonstration Sessions

  1. Event Identification in Social Media, H. Becker, M. Naaman, and L. Gravano, in Proc. of the ACM SIGMOD Workshop on the Web and Databases (WebDB 2009), 2009.
  2. Modeling Query-Based Access to Text Databases, E. Agichtein, P. Ipeirotis, and L. Gravano, in Proc. of the ACM SIGMOD Workshop on the Web and Databases (WebDB 2003), 2003.
  3. QXtract: A Building Block for Efficient Information Extraction from Text Databases (demonstration), E. Agichtein and L. Gravano, in Proc. of the 2003 ACM SIGMOD International Conference on Management of Data, 2003.
  4. Snowball: A Prototype System for Extracting Relations from Large Text Collections (demonstration), E. Agichtein, L. Gravano, J. Pavel, V. Sokolova, and A. Voskoboynik, in Proc. of the 2001 ACM SIGMOD International Conference on Management of Data, 2001.
  5. PERSIVAL Demo: Categorizing Hidden-Web Resources (demonstration), P. Ipeirotis, L. Gravano, and M. Sahami, in Proc. of the First ACM+IEEE Joint Conference on Digital Libraries (JCDL 2001), 2001.
  6. Automatic Classification of Text Databases through Query Probing, P. Ipeirotis, L. Gravano, and M. Sahami, in Proc. of the ACM SIGMOD Workshop on the Web and Databases (WebDB'00), 2000. (PDF version) Also in LNCS Series no. 1997, Springer, 2001.
  7. Combining Strategies for Extracting Relations from Text Collections, E. Agichtein, E. Eskin, and L. Gravano, in Proc. of the ACM SIGMOD Workshop on Research Issues in Data Mining and Knowledge Discovery (DMKD 2000), 2000. (PDF version)
  8. Exploiting Geographical Location Information of Web Pages, O. Buyukkokten, J. Cho, H. Garcia-Molina, L. Gravano, and N. Shivakumar, in Proc. of  the ACM SIGMOD Workshop on the Web and Databases (WebDB'99), 1999. (PDF version)

Invited Papers

  1. Building Query Optimizers for Information Extraction: The SQoUT Project, A. Jain, P. Ipeirotis, and L. Gravano, in SIGMOD Record, Special Issue on "Managing Information Extraction," vol. 37, no. 4, December 2008.
  2. Query- vs. Crawling-based Classification of Searchable Web Databases, L. Gravano, P. Ipeirotis, and M. Sahami, in IEEE Data Engineering Bulletin, vol. 25, no. 1, March 2002.
  3. Using q-grams in a DBMS for Approximate String Processing, L. Gravano, P. Ipeirotis, H. V. Jagadish, N. Koudas, S. Muthukrishnan, L. Pietarinen, and D. Srivastava, in IEEE Data Engineering Bulletin, vol. 24, no. 4, December 2001 [errata].
  4. Simplifying Data Access: The Energy Data Collection Project, J. L. Ambite, Y. Arens, E. Hovy, A. Philpot, L. Gravano, V. Hatzivassiloglou, and J. Klavans, in IEEE Computer, vol. 34, no. 2, February 2001.
  5. Database Research at Columbia University, S.-F. Chang, L. Gravano, G. Kaiser, K. Ross, and S. Stolfo, in SIGMOD Record, vol. 27, no. 3, September 1998.
  6. Mediating and Metasearching on the Internet, L. Gravano and Y. Papakonstantinou, in IEEE Data Engineering Bulletin, vol. 21, no. 2, June 1998.
  7. The Stanford InfoBus and Its Service Layers: Augmenting the Internet with Higher-Level Information Management Protocols, M. Roscheisen, M. Baldonado, C.-C. K. Chang, L. Gravano, S. Ketchpel, and A. Paepcke, in Digital Libraries in Computer Science: The MeDoc Approach, LNCS Series no. 1392, Springer, 1998.
  8. Optimizing Queries over Multimedia Repositories, S. Chaudhuri and L. Gravano, in IEEE Data Engineering Bulletin, vol. 19, no. 4, December 1996.
  9. Routing Techniques for Massively Parallel Communication, S. Felperin, L. Gravano, G. Pifarre, and J. Sanz, in Proceedings of the IEEE, vol. 79, no. 4, April 1991.

Position Papers, Meeting Reports, and Miscellaneous Publications

  1. Characterizing Web Resources for Improved Search, L. Gravano. Position paper for the First NSF-DELOS Workshop on Information Seeking, Searching, and Querying in Digital Libraries, Zurich, Switzerland, December 2000. (PDF version)
  2. Resource Indexing and Discovery In a Globally Distributed Digital Library, L. Gravano. Position paper for the NSF-EU Digital Library Collaboratory Working Group, Budapest, Hungary, November 1997.
  3. Querying Multiple Document Collections across the Internet, L. Gravano. Ph.D. Dissertation, Stanford University (advisor: H. Garcia-Molina), August 1997. (PDF version)
  4. Informal Internet Standards at Stanford, L. Gravano, C.-C. K. Chang, H. Garcia-Molina, and A. Paepcke. Position paper for the 1996 World-Wide Web Consortium (W3C) Distributed Indexing/Searching Workshop, May 1996.
Luis Gravano
gravano@cs.columbia.edu