Analysis on fuzzy risk of landfall typhoon in Zhejiang province of China Original Research Article

The simplest way to perform a fuzzy risk assessment is to calculate the fuzzy expected value and convert fuzzy risk into non-fuzzy risk, i.e. a crisp value. In doing so, there is a transition from a fuzzy set to crisp set. Therefore, the first step is to define an α level value, and then select the elements x with a subordinate degr