Gao / Miao

Query Processing over Incomplete Databases

Springer International Publishing

ISBN 978-3-031-01863-3

Standardpreis


58,84 €

sofort lieferbar!

Preisangaben inkl. MwSt. Abhängig von der Lieferadresse kann die MwSt. an der Kasse variieren. Weitere Informationen

Bibliografische Daten

eBook. PDF

2022

XV, 106 p..

In englischer Sprache

Umfang: 106 S.

Verlag: Springer International Publishing

ISBN: 978-3-031-01863-3

Weiterführende bibliografische Daten

Das Werk ist Teil der Reihe: Synthesis Lectures on Data Management

Produktbeschreibung

Incomplete data is part of life and almost all areas of scientific studies. Users tend to skip certain fields when they fill out online forms; participants choose to ignore sensitive questions on surveys; sensors fail, resulting in the loss of certain readings; publicly viewable satellite map services have missing data in many mobile applications; and in privacy-preserving applications, the data is incomplete deliberately in order to preserve the sensitivity of some attribute values.

Query processing is a fundamental problem in computer science, and is useful in a variety of applications. In this book, we mostly focus on the query processing over incomplete databases, which involves finding a set of qualified objects from a specified incomplete dataset in order to support a wide spectrum of real-life applications. We first elaborate the three general kinds of methods of handling incomplete data, including (i) discarding the data with missing values, (ii) imputation for the missing values, and (iii) just depending on the observed data values. For the third method type, we introduce the semantics of k-nearest neighbor (kNN) search, skyline query, and top-k dominating query on incomplete data, respectively. In terms of the three representative queries over incomplete data, we investigate some advanced techniques to process incomplete data queries, including indexing, pruning as well as crowdsourcing techniques.

Autorinnen und Autoren

Produktsicherheit

Hersteller

Springer Nature Customer Service Center GmbH

ProductSafety@springernature.com

Topseller & Empfehlungen für Sie

Ihre zuletzt angesehenen Produkte

Rezensionen

Dieses Set enthält folgende Produkte:
    Auch in folgendem Set erhältlich:

    • nach oben

      Ihre Daten werden geladen ...