P
Przemysław Grzegorzewski
Researcher at Polish Academy of Sciences
Publications - 140
Citations - 3085
Przemysław Grzegorzewski is an academic researcher from Polish Academy of Sciences. The author has contributed to research in topics: Fuzzy number & Fuzzy logic. The author has an hindex of 26, co-authored 132 publications receiving 2796 citations. Previous affiliations of Przemysław Grzegorzewski include Warsaw University of Technology & Systems Research Institute.
Papers
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Distances between intuitionistic fuzzy sets and/or interval-valued fuzzy sets based on the Hausdorff metric
TL;DR: New methods for measuring distances between intuitionistic fuzzy sets and/or interval-valued fuzzy sets, based on the Hausdorff metric, are suggested.
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Nearest interval approximation of a fuzzy number
TL;DR: The problem of the interval approximation of fuzzy numbers is discussed and a new interval approximation operator, which is the best one with respect to a certain measure of distance between fuzzy numbers, is suggested.
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Trapezoidal approximations of fuzzy numbers
TL;DR: The problem of the trapezoidal approximation of fuzzy numbers is discussed and a set of criteria for approximation operators is formulated, which can be used for direct operator derivation.
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Testing statistical hypotheses with vague data
TL;DR: This fuzzy test, contrary to the classical approach, leads not to the binary decision: to reject or to accept given null hypothesis, but to a fuzzy decision showing a grade of acceptability of the null and the alternative hypothesis, respectively.
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Trapezoidal approximations of fuzzy numbers---revisited
TL;DR: Fuzzy number approximation by trapezoidal fuzzy numbers which preserve expected interval is discussed and the previously proposed approximation operator is improved so as to always produce a well formed trapezoid fuzzy number.