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Schema matching is the task of providing correspondences between concepts describing the meaning of data in various heterogeneous, distributed data sources. Schema matching is one of the basic operations required by the process of data and schema integration, and thus has a great effect on its outcomes, whether these involve targeted content delivery, view integration, database integration, query rewriting over heterogeneous sources, duplicate data elimination, or automatic streamlining of workflow activities that involve heterogeneous data sources. Although schema matching research has been ongoing for over 25 years, more recently a realization has emerged that schema matchers are inherently uncertain. Since 2003, work on the uncertainty in schema matching has picked up, along with research on uncertainty in other areas of data management. This lecture presents various aspects of uncertainty in schema matching within a single unified framework. We introduce basic formulations of uncertainty and provide several alternative representations of schema matching uncertainty. Then, we cover two common methods that have been proposed to deal with uncertainty in schema matching, namely ensembles, and top-K matchings, and analyze them in this context. We conclude with a set of real-world applications.
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Previews available in: English
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Edition | Availability |
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Uncertain Schema Matching
2011, Springer International Publishing AG
in English
3031007174 9783031007170
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2
Uncertain schema matching
2011, Morgan & Claypool, Morgan & Claypool Publishers
electronic resource /
in English
1608454347 9781608454341
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Edition Notes
Part of: Synthesis digital library of engineering and computer science.
Series from website.
Includes bibliographical references (p. 77-84).
Abstract freely available; full-text restricted to subscribers or individual document purchasers.
Also available in print.
Mode of access: World Wide Web.
System requirements: Adobe Acrobat Reader.
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Feedback?February 26, 2022 | Edited by ImportBot | import existing book |
July 30, 2014 | Created by ImportBot | import new book |