自然科学版学报

梯形隶属函数形式简单 ,对数据信息要求低 ,因此被广泛使用 ,但是它的缺点是不能较好地反映客观实际 .在含有数据信息的基础上 ,用统计方法给出一种隶属函数 ,弥补了梯形隶属函数的不足 ,并致梯形隶属函数为此隶属函数的特例 .算例表明 ,此隶属函数较好地反映了客观实际 .

Trapezoidal membership function is widely used for its simple form and the low requirement for data. But it can't reflect objective facts very well. On the basis of data, this paper gives a kind of membership function by using the statistical approach so as to eke out trapezoidal membership function. Trapezoidal membership function is regarded as an especial example of this membership function. The arithmetical example makes it clear that this membership function reflects objective facts better.