Ontology-Based Query Processing for Global Information Systems

Ontology-Based Query Processing for Global Information Systems

by Eduardo Mena, Arantza Illarramendi
     
 

This work is a revision of the doctoral dissertation of Eduardo Mena pre­ sented to the Department of Computer Science and System Engineering at the University of Zaragoza (Spain) in November 1998 [Mena 98]. The OBSERVER system was developed as a result of this Ph.D. thesis. This book is composed of eight chapters. In Chapter 1 we introduce our rationale for…  See more details below

Overview

This work is a revision of the doctoral dissertation of Eduardo Mena pre­ sented to the Department of Computer Science and System Engineering at the University of Zaragoza (Spain) in November 1998 [Mena 98]. The OBSERVER system was developed as a result of this Ph.D. thesis. This book is composed of eight chapters. In Chapter 1 we introduce our rationale for writing a book about systems that process queries in global information systems. Then in Chapter 2 we review the techno­ logical context for our work, including distributed and heterogeneous environments and the use of ontologies. We also compare related work to our own. Chapter 3 presents our proposed global system architecture for query processing in global information systems. The main modules in the architecture and the main steps given to process a query are briefly introduced. Chapters 4 through 7 provide a detailed description of each query processing step. In Chapter 4 we detail the steps needed to access the data corre­ sponding to a query formulated over an ontology. All the aspects related to distribution, structural and semantic heterogeneity, and restricted query capabilities of the underlying data repositories are considered in this chapter. The main features of the mapping information that relates ontologies and data repositories are also described. Finally, we show the process of generating appropriate plans to access each involved reposi­ tory and the correlation of the answers coming from different reposito­ ries.

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Editorial Reviews

Mena (U. of Zaragoza, Spain) and Illarramendi (U. of the Basque Country, Spain) explain a form of information processing in which users are allowed to query a global information system without being aware of the site, structure, query language, and semantics of the data repositories that store the relevant data for a given query. The discuss three main aspects: the use metadata for capturing the information content of the repositories; the mappings that exist among the intensional metadata descriptions and the underlying data repositories; and the use of different semantics associated with each repository. After providing a basic description of their proposed architecture, separate chapters are devoted to a more detailed examination of each step in the querying process. Annotation c. Book News, Inc., Portland, OR (booknews.com)

Product Details

ISBN-13:
9781461355557
Publisher:
Springer US
Publication date:
04/30/2013
Series:
Springer International Series in Engineering and Computer Science, #619
Edition description:
Softcover reprint of the original 1st ed. 2001
Pages:
215
Product dimensions:
6.14(w) x 9.21(h) x 0.50(d)

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