Search for dissertations about: "Tore Risch"

Showing result 1 - 5 of 18 swedish dissertations containing the words Tore Risch.

  1. 1. Compilation of multiple file queries in a meta-database system

    Author : Tore Risch; Linköpings universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Computer science; Datavetenskap;

    Abstract : A meta-database system is constructed for describing the contents of very large databases. The meta-database is implemented as data structures in a symbol manipulation language, separate from the underlying database system. A number of programs are built around the meta-database. READ MORE

  2. 2. Indexing strategies for time series data

    Author : Henrik André-Jönsson; Nahid Shahmehri; Patrick Lambrix; Tore Risch; Linköpings universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Computer science; Datavetenskap;

    Abstract : Traditionally, databases have stored textual data and have been used to store administrative information. The computers used. and more specifically the storage available, have been neither large enough nor fast enough to allow databases to be used for more technical applications. READ MORE

  3. 3. Semantic Web Queries over Scientific Data

    Author : Andrej Andrejev; Tore Risch; Kjell Orsborn; Ruslan Fomkin; Gerhard Weikum; Uppsala universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; RDF; SPARQL; Arrays; Query optimization; Second-order functions; Scientific workflows; Datavetenskap med inriktning mot databasteknik; Computer Science with specialization in Database Technology;

    Abstract : Semantic Web and Linked Open Data provide a potential platform for interoperability of scientific data, offering a flexible model for providing machine-readable and queryable metadata. However, RDF and SPARQL gained limited adoption within the scientific community, mainly due to the lack of support for managing massive numeric data, along with certain other important features – such as extensibility with user-defined functions, query modularity, and integration with existing environments and workflows. READ MORE

  4. 4. Real-time data stream clustering over sliding windows

    Author : Sobhan Badiozamany; Tore Risch; Tamer Özsu; Uppsala universitet; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Data streaming; Sliding windows; Clustering; ; Datavetenskap med inriktning mot databasteknik; Computer Science with specialization in Database Technology;

    Abstract : In many applications, e.g. urban traffic monitoring, stock trading, and industrial sensor data monitoring, clustering algorithms are applied on data streams in real-time to find current patterns. Here, sliding windows are commonly used as they capture concept drift. READ MORE

  5. 5. Database technology for control and simulation

    Author : Esa Falkenroth; Anders Törne; Tore Risch; Ulf Nilsson; Linköpings universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Computer science; Datavetenskap;

    Abstract : This thesis shows how modern database technology can improve data management in engineering applications. It is divided into four parts. The first part reviews modern database technology with respect to engineering applications. The second part addresses data management in control applications. READ MORE