A new extension of fuzzy sets using rough sets: R-fuzzy sets This paper presents a new extension of fuzzy sets: R-fuzzy sets. The membership of an element of a R-fuzzy set is represented as a rough set. This new exte... Y Yang,C Hinde - 《Information Sciences》 被引量: 74发表:...
Mathematical rough set theory and fuzzy set theory have attracted both practical and theoretical researchers from their efficiently and effectively to analyze real-world data. A novel and significant extension is called flow graphs. In this paper, we introduced how to calculate certainty, coverage and...
As knowledge blocks in databases are fuzzy and random patterns may emerge, we propose random fuzzy rough set models based on random fuzzy sets and fuzzy logic operators. We give some properties of random fuzzy rough set. We prove that the lower fuzzy measures and the upper fuzzy measures induc...
We are looking forward to propose a novel technique, which depends on using modular techniques and integration between fuzzy set concepts and rough set the... AT Shawky,HA Hefny,AHA Elwhab - 《Advances in Intelligent & Soft Computing》 被引量: 2发表: 2012年 The Approach to Probabilistic Dec...
II. The rough fuzzy set based case In two previous papers we have developed axiomatic characterizations of approximation operators which are defined by the classical diamond and box operator... H Thiele - IEEE International Conference on Fuzzy Systems 被引量: 102发表: 2001年 Rough Set ...
In this paper,Ziarko's idea of variable precision inclusion is introduced in the fuzzy-rough set model.We use ?茁-precision aggregation operators to produce variable precision fuzzy-rough set,which is then used to the fuzzy data analysis of large databases.The developed model has certain tolerance...
fuzzy weight that various influencing element indexes subjected to construction environment classification grade was proposed based on the knowledge dependent degree and the importance axiom in rough set theory.Fuzzy evaluation method of construction environment grade of highway engineering in mountainous area...
By introducing the new concepts of fuzzy β-covering and fuzzy β-neighborhood, we define two new types of fuzzy covering rough set models which can be regarded as bridges linking covering rough set theory and fuzzy rough set theory. We show the properties of the two models, and reveal the...
Experimental results imply that our algorithm of attribute reduction with general fuzzy rough sets is feasible and valid. 展开 关键词: fuzzy set rough set fuzzy rough set attribute reduction discemibility matrix DOI: 10.1016/j.knosys.2011.02.009 被引量: 167 ...
(nodes of relational tree) is considered as multi-criteria decision making problem (MCDM) by integrated application of Rough Set and fuzzy TOPSIS (Technique for Order Preference by Similarity to Ideal Solution), which the Rough Set is used to mining the quality data and fuzzy TOPSIS is adopted...