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Research Directions:
Information Integration and Business Intelligence
Semantic Information Integration
XML Data Federation
Parametric Search of E-Commerce Data
Semi-structured and Unstructured Data Access
Autonomous Sensor Data Management
XML View Materialization
XML Encodings
Adaptive XML Indexes
XQuery Optimization
Dynamic Web Indexes
Efficient Data Access Methods for RDBMS
Multi Dimensional Clustering
Self-Adaptive Histograms
Continuous Query Optimization
Previous Projects:
IBM DB2 Parallel Edition
IBM DB2 Tertiary Storage Integration
Members:
Yuan-Chi Chang
Bishwaranian Bhattacharjee
Christian Lang
Timothy Malkemus
George Mihaila
Ioana Stanoi
Min Wang
Publications
Watson Research Center
 
Database Research at Watson
Selected Publications
Information Integration and Business Intelligence
Information Integration and Business Intelligence
Christian A. Lang, Yuan-Chi Chang, John R. Smith. Making the Threshold Algorithm Access Cost Aware. IEEE Transactions on Knowledge and Data Engineering (TKDE), to appear.
Min Wang, Yuan-Chi Chang, Sriram Padmanabhan. Supporting Efficient Parametric Search of E-Commerce Data: A Loosely-Coupled Solution. Proceedings of Intl. Conference on Extending Database Technology (EDBT), 2002.
 
Semi-structured and Unstructured Data Storage and Retrieval
Semi-structured and Unstructured Data Storage and Retrieval
Ke Yi, Hao He, Ioana Stanoi, Jun Yang. Incremental Maintenance of XML Structural Indexes. Proceedings of ACM SIGMOD, 2004.
Oded Shmueli, George A. Mihaila, Sriram Padmanabhan. Query-Customized Rewriting and Deployment of DB-to-XML Mappings. Proceedings of Intl. Conference on Extending Database Technology (EDBT), 2004.
Ioana Stanoi, George A. Mihaila, Sriram Padmanabhan. A Framework for the Selective Dissemination of XML Documents based on Inferred User Profiles. Proceedings of Intl. Conference on Data Engineering (ICDE), 2003.
Lipyeow Lim, Min Wang, Sriram Padmanabhan, Jeffrey Scott Vitter, Ramesh C. Agarwal. Dynamic maintenance of web indexes using landmarks. Proceedings of the Twelfth International World Wide Web Conference (WWW), 2003.
Lipyeow Lim, Min Wang, Sriram Padmanabhan, Jeffrey Scott Vitter, Ronald Parr. XPathLearner: An On-line Self-Tuning Markov Histogram for XML Path Selectivity Estimation. Proceedings of Intl. Conference on Very Large Databases (VLDB), 2002.
 
Efficient Data Access Methods for Relational Databases
Efficient Data Access Methods for Relational Databases
Sriram Padmanabhan, Bishwaranjan Bhattacharjee, Tim Malkemus, Leslie Cranston, Matthew Huras. Multi-Dimensional Clustering: A New Data Layout Scheme in DB2. Proceedings of ACM SIGMOD, 2003.
Bishwaranjan Bhattacharjee, Sriram Padmanabhan, Tim Malkemus, Tony Lai, Leslie Cranston, Matthew Huras. Efficient Query Processing for Multi-Dimensionally Clustered Tables in DB2. Proceedings of Intl. Conference on Very Large Databases (VLDB), 2003.
Lipyeow Lim, Min Wang, Jeffrey Scott Vitter. SASH: A Self-Adaptive Histogram Set for Dynamically Changing Workloads. Proceedings of Intl. Conference on Very Large Databases (VLDB), 2003.
Bishwaranjan Bhattacharjee, Leslie Cranston, Tim Malkemus, Sriram Padmanabhan. Boosting Query Performance: Multidimensional Clustering. DB2 Magazine, Q2 2003.
Like Gao, Min Wang, Xiaoyang Sean Wang, Sriram Padmanabhan. A learning-based approach to estimate statistics of operators in continuous queries: a case study. Proceedings of the ACM SIGMOD workshop on Research issues in data mining and knowledge discovery, 2003.
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