Fuzzy set theory has emerged as a powerful tool to address the inherent imprecisions and uncertainties in financial modelling, notably in option pricing. By incorporating fuzziness into conventional ...

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.