Type-2 fuzzy sets extend the classical concept of fuzzy sets by allowing the membership grade itself to be a fuzzy set. This extension provides a richer mathematical framework for representing ...
Then in the early 20th century, Jan Lukasiewicz proposed a three-valued logic (true, possible, false), which never gained wide acceptance. In 1965, Lotfi A. Zadeh of the University of California at ...
This paper presents a fuzzy system to assure the quality of volunteered geographic information (VGI) collected for the purposes of species surveillances. The system uses trust as a proxy of quality.
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