Title :
Comment on “The lower and upper approximations in a fuzzy group”
Author :
Wang, Chang-zhong ; Du, Wenju ; Chen, De-gang
Author_Institution :
Dept. of Math., Bohai Univ., Jinzhou, China
Abstract :
In this paper, we first point out that there are still some incomplete theorems in although some authors have showed several incorrect statements in the literature. We then present the improved versions of the incomplete propositions.
Keywords :
approximation theory; group theory; rough set theory; fuzzy group; incomplete propositions; lower approximations; rough set theory; upper approximations; Cybernetics; Data mining; Fuzzy logic; Fuzzy sets; Information systems; Machine learning; Mathematics; Physics; Rough sets; Set theory; Group; Normal subgroup; Rough approximation; Rough set;
Conference_Titel :
Machine Learning and Cybernetics, 2009 International Conference on
Conference_Location :
Baoding
Print_ISBN :
978-1-4244-3702-3
Electronic_ISBN :
978-1-4244-3703-0
DOI :
10.1109/ICMLC.2009.5212579
