Uncertain schema matching
著者
書誌事項
Uncertain schema matching
（Synthesis lectures on data management, #13）
Morgan & Claypool, c2011
- : pbk
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注記
Bibliography: p. 77-84
内容説明・目次
内容説明
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.
目次
Introduction
Models of Uncertainty
Modeling Uncertain Schema Matching
Schema Matcher Ensembles
Top-K Schema Matchings
Applications
Conclusions and Future Work
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