In almost every work on fuzzy sets, the existence of membership functions taking part in the considered model is assumed and it is not studied in depth whether or not such functions exist. On the other hand, generally the relationship between a certain studied characteristic and its referential set
Construction of differentiable membership functions
β Scribed by A. Grauel; L.A. Ludwig
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 405 KB
- Volume
- 101
- Category
- Article
- ISSN
- 0165-0114
No coin nor oath required. For personal study only.
β¦ Synopsis
In many applications of fuzzy logic it is of special interest to have a transfer function with good properties regarding differentiability. To that end it is desirable to have continuously differentiable membership functions with only few parameters. In this paper we propose a class of symmetrical and asymmetrical membership functions of exponential order. Moreover, we present a class of more flexible membership functions by construction.
π SIMILAR VOLUMES
In this paper, we study the semantics of fuzzy sets. We show that fuzzy sets can be interpreted as the aggregation of a set of observations. We formalize this interpretation by means of the OWA and the WOWA operators. The introduction of the WOWA operator allows the user to weigh each observation.
We investigate differentiability of functions defined on regions of the real quaternion field and obtain a noncommutative version of the Cauchy-Riemann conditions. Then we study the noncommutative analog of the Cauchy integral as well as criteria for functions of a quternion variable to be analytic.
We show that Lipschitz-continuously differentiable functions f : ([-I; I])k + R which are computable in time I'( T(n)), where T is regular, can be computed online in time C'( T(n) + .&(n) log(n)) on a Type-2-machine, where .I:n~n log(n) log log(n) is the Schiinhage-Strassenbound for integer multipli