Planning and Optimizing Semantic Information Requests Using Domain Modeling and Resource Characteristics

The focus of information integration systems providing single access to data from distributed, diverse, and autonomous sources (including web-based sources) has changed from syntax and structure to semantics, allowing more meaningful integration of data. InfoQuilt goes one step further to support knowledge discovery by providing users with tools to analyze the data, understand the domains and relationships between them, and explore new potential relationships. It provides a framework to model the semantics of domains, complex semantic relationships between them, characteristics of available sources, and provides an interface to specify information requests that the system can "understand". This thesis focuses on the use of knowledge about domains, their relationships, and sources to efficiently create practical execution plans for such semantic information requests.

[1]  Gio Wiederhold,et al.  Mediators in the architecture of future information systems , 1992, Computer.

[2]  Michael R. Genesereth,et al.  Query planning and optimization in information integration , 1997 .

[3]  Michael R. Genesereth,et al.  Query planning in infomaster , 1997, SAC '97.

[4]  Per-Åke Larson,et al.  Query Transformation for PSJ-Queries , 1987, VLDB.

[5]  Craig A. Knoblock,et al.  Planning by Rewriting: E ciently Generating High-Quality Plans , 1999 .

[6]  Amit P. Sheth,et al.  Multimedia Data Management: Using Metadata to Integrate and Apply Digital Media , 1998 .

[7]  Jennifer Widom,et al.  The TSIMMIS Project: Integration of Heterogeneous Information Sources , 1994, IPSJ.

[8]  Divesh Srivastava,et al.  Answering Queries Using Views. , 1999, PODS 1995.

[9]  Amit P. Sheth,et al.  Changing Focus on Interoperability in Information Systems:From System, Syntax, Structure to Semantics , 1999 .

[10]  Eduardo Mena Nieto.  Observer: an approach for query processing in global information systems based on interoperation across pre-existing ontologies , 1999 .

[11]  A. Sheth,et al.  Information Brokering Across Heterogeneous Digital Data , 2000, Advances in Database Systems.

[12]  Craig A. Knoblock,et al.  Query processing in the SIMS information mediator , 1997 .

[13]  Dilpreet Singh,et al.  AN AGENT BASED ARCHITECTURE FOR QUERY PLANNING AND COST MODELING OF WEB SOURCES , 2000 .

[14]  Terence R. Smith,et al.  The Alexandria digital earth prototype , 2001, JCDL '01.

[15]  Divesh Srivastava,et al.  Answering Queries Using Views. , 1999, PODS 1995.

[16]  Vipul Kashyap,et al.  InfoSleuth: agent-based semantic integration of information in open and dynamic environments , 1997, SIGMOD '97.

[17]  Kyuseok Shim,et al.  Optimizing queries with materialized views , 1995, Proceedings of the Eleventh International Conference on Data Engineering.

[18]  Joann J. Ordille,et al.  Querying Heterogeneous Information Sources Using Source Descriptions , 1996, VLDB.