Sökning: "fuzzy sets"

Visar resultat 1 - 5 av 20 avhandlingar innehållade orden fuzzy sets.

  1. 1. Fuzzy Set Theory Applied to Make Medical Prognoses for Cancer Patients

    Författare :Hang Zettervall; Blekinge Tekniska Högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fuzzy set theory; the Mamdani fuzzy control system; the Sugeno controller; fuzzy c-means clustering analysis; point set approximation; linguistic models; the 2-tuple linguistic representations; the hesitant fuzzy linguistic term sets;

    Sammanfattning : As we all know the classical set theory has a deep-rooted influence in the traditional mathematics. According to the two-valued logic, an element can belong to a set or cannot. In the former case, the element’s membership degree will be assigned to one, whereas in the latter case it takes the zero value. LÄS MER

  3. 2. Indiscernibility and Vagueness in Spatial Information Systems

    Författare :Karim Oukbir; KTH; []
    Nyckelord :indiscernibility; vagueness; rough sets; fuzzy sets; information systems;

    Sammanfattning : 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. LÄS MER

  4. 3. Context Sensitive Transformation of Geographic Information

    Författare :Ola Ahlqvist; Peter Fisher; Stockholms universitet; []
    Nyckelord :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;

    Sammanfattning : 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. LÄS MER

  5. 4. Topics in Soft Computing

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

    Sammanfattning : .... LÄS MER

  7. 5. Fuzzy similarity-based image processing

    Författare :Gustav Tolt; Ivan Kalaykov; Ming Xie; Örebro universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Image analysis; Bildanalys; Image analysis; Bildanalys; Industriell mätteknik; Industrial Measurement Technology;

    Sammanfattning : Computer vision problems require low-level operations, e.g. noise reduction and edge detection, as well as high-level operations, e.g. LÄS MER