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JACIII Vol.19 No.1 pp. 43-50
doi: 10.20965/jaciii.2015.p0043
(2015)

Paper:

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Fuzzy Multisets in Granular Hierarchical Structures Generated from Free Monoids

Tetsuya Murai*1, Sadaaki Miyamoto*2, Masahiro Inuiguchi*3,
Yasuo Kudo*4, and Seiki Akama*5

*1Graduate School of Information Science and Technologies, Hokkaido University, Kita 14, Nishi 9, Kita-ku, Sapporo, Hokkaido 060-0814, Japan

*2Graduate School of Systems and Information Engineering, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan

*3Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan

*4Department of Computer Science and Systems Engineering, Muroran Institute of Technology, 27-1 Miumoto, Muroran, Hokkaido 050-8585, Japan

*5C-Republic, 1-20-1 Higashi-Yurigaoka, Asoh-ku, Kawasaki, Kanagawa 215-0012, Japan

Received:
April 20, 2014
Accepted:
August 25, 2014
Published:
January 20, 2015
Creative Commons License
Keywords:
granular hierarchical structures, free monoids, fuzzy multisets, homomorphisms
Abstract
Fuzzy multisets defined by Yager take multisets on interval (0,1] as grades of membership. As Miyamoto later pointed out, the fuzzy multiset operations originally defined by Yager are not compatible with those of fuzzy sets as special cases. Miyamoto proposed different definitions for fuzzy multiset operations. This paper focuses on the two definitions of fuzzy multiset operations, one by Yager and the other by Miyamoto. It examines their differences in the framework of granular hierarchical structures generated from the free monoids as proposed in our previous papers. In order to define basic order between multisets on interval (0,1], Yager uses the natural order on the range N, the set of natural numbers, whereas Miyamoto newly introduces an order generated from both domain (0,1] and range N through the notion of cuts.
Cite this article as:
T. Murai, S. Miyamoto, M. Inuiguchi, Y. Kudo, and S. Akama, “Fuzzy Multisets in Granular Hierarchical Structures Generated from Free Monoids,” J. Adv. Comput. Intell. Intell. Inform., Vol.19 No.1, pp. 43-50, 2015.
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