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http://yadda.icm.edu.pl:80/baztech/element/bwmeta1.element.baztech-52ae8926-ab31-4271-afb8-fc801c6801a9

Czasopismo

Technical Sciences / University of Warmia and Mazury in Olsztyn

Tytuł artykułu

On exactness, definability and vagueness in partial approximation spaces

Autorzy Ciucci, D.  Mihálydeák, T.  Csajbók, Z. E. 
Treść / Zawartość
Warianty tytułu
Języki publikacji EN
Abstrakty
EN In this paper, lower/upper, boundary, and negative regions of set approximations, the fundamental concepts of classical rough set theory, have been considered as primitive ones. Assuming that they are independent of each other, a generalized framework for their investigations is outlined. Its main building blocks are base sets and definable sets. Lower/upper approximations, boundaries and negative sets are all considered as definable sets and their mutual interactions are studied. Lastly exact/rough sets are discussed. In generalized framework, four groups of formulae are defined for representing different variants of rough sets. They emphasize distinct features of roughness, and so it may be of highly importance which one is used in practical applications. Some possible choices appeared in authors’ publications are mentioned.
Słowa kluczowe
EN partial approximation framework   vagueness   exactness   rough sets   definability  
Wydawca Wydawnictwo Uniwersytetu Warmińsko-Mazurskiego w Olsztynie
Czasopismo Technical Sciences / University of Warmia and Mazury in Olsztyn
Rocznik 2015
Tom nr 18(3)
Strony 203--212
Opis fizyczny Bibliogr. 33 poz., tab.
Twórcy
autor Ciucci, D.
  • Department of Informatics, Systems and Communication University of Milano-Bicocca (Italia)
autor Mihálydeák, T.
  • Department of Computer Science, Faculty of Informatics, University of Debrecen (Hungary)
autor Csajbók, Z. E.
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