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Rough sets and fuzzy sets. (English) Zbl 0588.04004
In this note we compare notions of rough set and fuzzy set, and we show that these two notions are different.

MSC:
03E20 Other classical set theory (including functions, relations, and set algebra)
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References:
[1] Orłowska, E.; Pawlak, Z., Expressive power of knowledge representation, Internat. J. man-machine stud., 20, 485-500, (1984) · Zbl 0541.68070
[2] Pawlak, Z., Rough sets, Internat. J. inform. comput. sci., 11, 5, 341-356, (1982) · Zbl 0501.68053
[3] Zadeh, L.A., Fuzzy sets, Inform, and control, 8, 338-353, (1965) · Zbl 0139.24606
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