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(2015)Advances in Intelligent Systems Research.89.p.651-658 Mark abstract In this paper we review four fuzzy extensions of the so-called tight pair of covering based rough set approximation operators. Furthermore, we propose two new extensions of the tight pair: for the first model, we apply the technique of representation by levels to define the approximation operators, while the second model is an intuitive extension of the crisp operators. For the six models, we study which theoretical properties they satisfy. Moreover, we discuss interrelationships between the models.

Please use this url to cite or link to this publication: http://hdl.handle.net/1854/LU-6874688

Author: Lynn D-eer , Chris Cornelis and Daniel Sánchez

Source: https://biblio.ugent.be/publication/6874688


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