• DocumentCode
    186023
  • Title

    Rough sets in crisp and fuzzy granular hierarchical structures

  • Author

    Tanaka, T. ; Murai, Takashi ; Kudo, Yasuo ; Akama, Seiki

  • Author_Institution
    Grad. Sch. of Inf. Sci. & Techlonogies, Hokkaido Univ., Sapporo, Japan
  • fYear
    2014
  • fDate
    22-24 Oct. 2014
  • Firstpage
    286
  • Lastpage
    291
  • Abstract
    We proposed granular hierarchical structures generated from free monoids in order to provide a unified basis for various extended concepts of sets like multisets, fuzzy sets and others. In this paper, we examine rough fuzzy multisets, that is, the upper and lower approximation operators of fuzzy multisets in the framework of crisp and fuzzy granular hierarchical structures.
  • Keywords
    fuzzy set theory; rough set theory; approximation operators; crisp granular hierarchical structures; free monoids; fuzzy granular hierarchical structures; multisets; rough fuzzy multisets; rough sets; Approximation methods; Conferences; Educational institutions; Electronic mail; Fuzzy sets; Information science; Rough sets; Crisp and fuzzy granular hierarchical structures; Empty stringizing; Rough fuzzy multisets;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Granular Computing (GrC), 2014 IEEE International Conference on
  • Conference_Location
    Noboribetsu
  • Type

    conf

  • DOI
    10.1109/GRC.2014.6982851
  • Filename
    6982851