The entropy of fuzzy partitions with regard to a fuzzy measure is analyzed. A general model based on pseudo-arithmetical operations and g-functions will be created. The entropy of fuzzy partitions introduced by Ruspini [Inform. and Control 15 (1969) 22] and Dumitrescu [J. Math. Anal. Appl. 176(1993) 359] is shown to be reasonable only up to an isomorphism. (C) 1998 Elsevier Science B.V. All rights reserved. [References: 18]
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