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Author Zahmatkesh, Shima

Title Relevant query answering over streaming and distributed data : a study for RDF streams and evolving web data / Shima Zahmatkesh, Emanuele Della Valle
Published Cham : Springer, 2020
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Description 1 online resource
Series SpringerBriefs in applied sciences and technology, PoliMI SpringerBriefs
SpringerBriefs in applied sciences and technology. PoliMI SpringerBriefs.
Contents Introduction -- Background -- ACQUA : approximate continuous query answering in RSP -- Handling queries with a FILTER clause -- Rank aggregation in queries with a FILTER clause -- Handling top-k queries -- Conclusion
Summary This book examines the problem of relevant query answering over the Web and provides a comprehensive overview of relevant query answering over streaming and distributed data. In recent years, Web applications that combine highly dynamic data streams with data distributed over the Web to provide relevant answers have attracted increasing attention. Answering in a timely fashion, i.e., reactively, is one of the most important performance indicators, especially when the distributed data is evolving. The book proposes a solution that retains a local replica of the distributed data and offers various maintenance policies to refresh the replica over time. A limited refresh budget guarantees the reactiveness of the system. Focusing on stream processing and Semantic Web, it appeals to scientists and graduate students in the field. -- Provided by publisher
Bibliography Includes bibliographical references
Subject Querying (Computer science)
Semantic computing.
Querying (Computer science)
Semantic computing.
Form Electronic book
Author Della Valle, Emanuele.
ISBN 3030383393
9783030383398