… norms and related concepts that link some aspects of the theory of fuzzy sets to the … concepts
of fuzzy set theory. At appropriate times, however, the additional potential of fuzzy set theory …

… uses the theories of rough set and fuzzy set to handle uncertainty in the problem of design
concept evaluation. To obtain the weight of criteria used in the evaluation of design concepts, …

… theory or combinatorial set theory, although it is closely related. On the rare occasion that we
will use the graph theoretic notion, we will refer to it as a "graph theoretic … the concept of the …

… In this paper, in order to obtain the concept lattices with … of the concept lattices based on
rough set theory, including the attribute oriented concept lattice and the object oriented concept …

… concept lattices of fuzzy contexts based on formal concept analysis and rough set theory, a
comparative study of the two theories … new characterizations of formal concept lattices of fuzzy …

… The third option to combine the two theories into a common, and … concept analysis to rough
set theory, which leads to new, different interpretations and representations of formal concepts…

… concepts are defined in terms of the primitive notions of set and membership. In axiomatic
set theory … In the previous few sections, we have introduced a large number of settheoretic …

… state of concept theory: It shows that today there is not consensus about what concepts
are, which theories of concepts are most important, or how theories of concepts should be …

… This paper develops a theory of concepts, called the Unified Concept Theory (… set theoretic
operations with closure, such as (T ∪ T ) • = T • ∩ T • . Example 9 below applies these ideas …

… comparative study of rough set theory and formal concept analysis. The two theories aim at
different goals and summarize different types of knowledge. Rough set theory is used for the …