research

In general, my interests are in database systems and theory. I am particularly interested in data integration, exchange, and sharing in peer-to-peer and social/semantic web information systems.

I am currently investigating the data mapping problem: automating the discovery of executable local mappings between autonomous data sources. Such mappings are the basic glue for building data sharing systems. Some of our results were presented in the paper Data Mapping as Search at EDBT 2006 in Munich.

In collaboration with colleagues at Indiana and in Belgium, I am also studying relationships between query languages and structural indexes. Some of our initial results were presented in a paper at PODS 2006 and a paper at DBPL 2007.

selected peer-reviewed publications

• An Algebra for Basic Graph Patterns. George H.L. Fletcher. Logic in Databases, 2008, Rome.

• A Methodology for Coupling Fragments of XPath with Structural Indexes for XML Documents. George H.L. Fletcher, Dirk Van Gucht, Yuqing Wu, Marc Gyssens, Sofía Brenes, and Jan Paredaens. DBPL, 2007, Vienna.

• Structural Characterizations of the Semantics of XPath as Navigation Tool on a Document. Marc Gyssens, Jan Paredaens, Dirk Van Gucht, and George H.L. Fletcher. PODS, 2006, Chicago.

• Data Mapping as Search. George H.L. Fletcher and Catharine M. Wyss. EDBT, 2006, Munich.

• A Calculus for Data Mapping. George H.L. Fletcher, Catharine M. Wyss, Edward L. Robertson, and Dirk Van Gucht. ENTCS 150(2): 37-54, 2006.

• Relational Data Mapping in MIQIS. George H.L. Fletcher and Catharine M. Wyss. SIGMOD, 2005, Baltimore.

• MIQIS: Modular Integration of Queryable Information Sources. Catharine M. Wyss, George H.L. Fletcher, Fulya Erdinc, and Jeremy T. Engle. IIWeb, 2004, Toronto.

• Unstructured Peer-to-Peer Networks: Topological Properties and Search Performance. George H.L. Fletcher, Hardik Sheth, and Katy Börner. AP2PC, 2004, New York.

For more details, you can also check out my entries at DBLP, DBLife, and CSB.