Properties of measures of information in evidence and possibility theories
Fuzzy Sets and Systems - Special Issue: Measures of Uncertainty
Rough sets and fuzzy sets—some remarks on interrelations
Fuzzy Sets and Systems
Fuzzy sets and fuzzy logic: theory and applications
Fuzzy sets and fuzzy logic: theory and applications
Information Sciences: an International Journal
A mass assignment theory of the probability of fuzzy events
Fuzzy Sets and Systems
Fuzzy sets and binary-proximity-based rough sets
Information Sciences: an International Journal - From rough sets to soft computing
A comparative study of fuzzy sets and rough sets
Information Sciences: an International Journal
Rough approximation quality revisited
Artificial Intelligence
Rough Sets: Theoretical Aspects of Reasoning about Data
Rough Sets: Theoretical Aspects of Reasoning about Data
Rough-Fuzzy Hybridization: A New Trend in Decision Making
Rough-Fuzzy Hybridization: A New Trend in Decision Making
Rough Sets: Mathematical Foundations
Rough Sets: Mathematical Foundations
A context model for fuzzy concept analysis based upon modal logic
Information Sciences—Informatics and Computer Science: An International Journal
Constructive and axiomatic approaches of fuzzy approximation operators
Information Sciences—Informatics and Computer Science: An International Journal - Mining stream data
Two new operators in rough set theory with applications to fuzzy sets
Information Sciences—Informatics and Computer Science: An International Journal
IEEE Transactions on Fuzzy Systems
Minimization of axiom sets on fuzzy approximation operators
Information Sciences: an International Journal
Granulation of a fuzzy set: Nonspecificity
Information Sciences: an International Journal
Rough variables with values in measurable spaces
Information Sciences: an International Journal
(θ,T)-fuzzy rough approximation operators and the TL-fuzzy rough ideals on a ring
Information Sciences: an International Journal
Measures for evaluating the decision performance of a decision table in rough set theory
Information Sciences: an International Journal
Rough fuzzy approximations on two universes of discourse
Information Sciences: an International Journal
Axiomatic systems for rough sets and fuzzy rough sets
International Journal of Approximate Reasoning
Reasoning within intuitionistic fuzzy rough description logics
Information Sciences: an International Journal
Reasoning within expressive fuzzy rough description logics
Fuzzy Sets and Systems
A new extension of fuzzy sets using rough sets: R-fuzzy sets
Information Sciences: an International Journal
FUZZ-IEEE'09 Proceedings of the 18th international conference on Fuzzy Systems
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Recently, an attempt of integration between the theories of fuzzy sets and rough sets has resulted in providing a roughness measure for fuzzy sets [M. Banerjee, S.K. Pal, Roughness of a fuzzy set, Information Sciences 93 (1996) 235-246]. Essentially, Banerjee and Pal's roughness measure depends on parameters that are designed as thresholds of definiteness and possibility in membership of the objects to a fuzzy set. In this paper we first remark that this measure of roughness has several undesirable properties, and then propose a parameter-free roughness measure for fuzzy sets based on the notion of the mass assignment of a fuzzy set. Several interesting properties of this new measure are examined. Furthermore, we also discuss how the proposed approach is used to describe the rough approximation quality of a fuzzy classification.