Search for dissertations about: "Rough Sets"

Showing result 1 - 5 of 24 swedish dissertations containing the words Rough Sets.

  2. 1. Reasoning with Rough Sets and Paraconsistent Rough Sets

    Author : Aida Vitória; Jan Małuszyński; Andrzej Skowron; Linköpings universitet; []
    Keywords : TECHNOLOGY; TEKNIKVETENSKAP;

    Abstract : This thesis presents an approach to knowledge representation combining rough sets and para-consistent logic programming.The rough sets framework proposes a method to handle a specific type of uncertainty originating from the fact that an agent may perceive different objects of the universe as being similar, although they may have di®erent properties. READ MORE

  4. 2. Indiscernibility and Vagueness in Spatial Information Systems

    Author : Karim Oukbir; KTH; []
    Keywords : indiscernibility; vagueness; rough sets; fuzzy sets; information systems;

    Abstract : We investigate the use of the concept of indiscernibilityand vagueness in spatial information systems. To representindiscernibility and vagueness we use rough sets, respectivelyfuzzy sets. We introduce a theoretical model to supportapproximate queries in information systems and we show howthose queries can be used to perform uncertain classi. READ MORE

  5. 3. Context Sensitive Transformation of Geographic Information

    Author : Ola Ahlqvist; Peter Fisher; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Geographic information; geographic context; semantic models; conceptual models; interoperability; uncertainty; scale; classification; rough sets; fuzzy sets; decision support; Other earth sciences; Övrig geovetenskap;

    Abstract : This research is concerned with theoretical and methodological aspects of geographic information transformation between different user contexts. In this dissertation I present theories and methodological approaches that enable a context sensititve use and reuse of geographic data in geographic information systems. READ MORE

  6. 4. Topics in Soft Computing

    Author : J. H. D. Keukelaar; KTH; []
    Keywords : visual programming language; dataflow; grammar formalism; rough sets; fuzzy sets; uncertainty; spatial data; genetic programming; optimization;

    Abstract : .... READ MORE

  7. 5. A Database Query Language for Uncertain Spatial Data

    Author : Karim Oukbir; KTH; []
    Keywords : query language; spatal data; uncertainty; rough sets; rough classifications; uncertain topological relations;

    Abstract : .... READ MORE