Results 11 to 20 of about 6,303,262 (343)

Agents and rough sets [PDF]

open access: yesInternational Journal of Computational Intelligence Systems, 2014
Rough set theory gives approximation models of complex knowledge structure. Agents are not present in the definition of the rough sets. Now we will show that a set of conflicting agents or active set can be used to model inconsistent decision in rough ...
Germano Resconi, Chris Hinde
doaj   +4 more sources

The Lattice of Rough Subsets of a Rough Set. The Category of Rough Sets [PDF]

open access: hybridDemonstratio Mathematica, 1997
The paper deals with algebraic structures related to rough sets, introduced by Pawlak in 1982. It is proved that the lattice of all rough subsets of a given rough set is a complete Heyting algebra. Necessary and sufficient conditions for the above lattice to be a Boolean algebra are presented.
Teresa Biegaǹska
openalex   +4 more sources

Confusion Matrices and Rough Set Data Analysis [PDF]

open access: yesJournal of Physics: Conference Series, 2019
A widespread approach in machine learning to evaluate the quality of a classifier is to cross – classify predicted and actual decision classes in a confusion matrix, also called error matrix.
I. Düntsch, G. Gediga
semanticscholar   +1 more source

Fuzzy-rough set models and fuzzy-rough data reduction

open access: yesCroatian Operational Research Review, 2020
Rough set theory is a powerful tool to analysis the information systems. Fuzzy rough set is introduced as a fuzzy generalization of rough sets. This paper reviewed the most important contributions to the rough set theory, fuzzy rough set theory and their
Hassan Mishmast Nehi   +1 more
doaj   +1 more source

Rough Standard Neutrosophic Sets: An Application on Standard Neutrosophic Information Systems [PDF]

open access: yesNeutrosophic Sets and Systems, 2016
A rough fuzzy set is the result of the approximation of a fuzzy set with respect to a crisp approximation space. It is a mathematical tool for the knowledge discovery in the fuzzy information systems.
Nguyen Xuan Thao   +2 more
doaj   +1 more source

Fermatean neutrosophic rough set [PDF]

open access: yesComputational Algorithms and Numerical Dimensions
In order to balance uncertainty, a reasonable approximation of a crisp set that yields lower as well as upper approximations of the set is made. Here, first, a special class of Fermatean Neutrosophic Set is devised by associating the Neutrosophic Set ...
S Bhuvaneshwari   +2 more
doaj   +1 more source

Rough Neutrosophic Sets

open access: yesNeutrosophic Sets and Systems, 2013
Both neutrosophic sets theory and rough sets theory are emerging as powerful tool for managing uncertainty, indeterminate, incomplete and imprecise information. In this paper we develop an hybrid structure called rough neutrosophic sets and studied their properties.
Mamoni Dhar   +2 more
openaire   +6 more sources

Elementary Rough Set Granules: Toward a Rough Set Processor

open access: green, 2004
In this chapter, the basics of the rough set approach are presented, and an outline of an exemplary processor structure is given. The organization of a simple processor is based on elementary rough set granules and dependencies between them. The rough set processor (RSP) is meant to be used as an additional fast classification unit in ordinary ...
Zdzisław Pawlak
openalex   +4 more sources

The Upper and Lower Approximations in Rough Subgroupoid of a Groupoid

open access: yesMoroccan Journal of Pure and Applied Analysis, 2018
In this article, we introduce the concept of rough subgroupoid of a groupoid as a generalization of a rough subgroup and give some features about the lower and the upper approximations in a groupoid [1]. We give some of the characterization of them.
Tasbozan H., Icen I.
doaj   +1 more source

The use of rough rules in the selection of topographic objects for generalizing geographical information

open access: yesPolish Cartographical Review, 2020
Selection is a key element of the cartographic generalisation process, often being its first stage. On the other hand it is a component of other generalisation operators, such as simplification.
Fiedukowicz Anna
doaj   +1 more source

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