基于神经网络的正态分布函数近似计算方法

APPROXIMATELY CALCULATING METHODS OF NORMAL DISTRIBUTION FUNCTION BASED ON NN

正态分布是工程可靠性设计计算与分析中应用最广泛的一种概率分布 ,但它的分布函数却写不出显式 ,函数值必须查表获得 ,给工程自动设计和仿真带来许多不便 .本文提出应用 BP神经网络映射标准正态分布函数的近似算法 ,以便于工程使用 .

Normal distribution is widely used in engineering reliability analysis and design, but its distribution function can't be a visualized equation. The value must be obtained from a special table. It brings too much inconvenience to automatic design and emulation in engineering. In this paper, the approximately calculating method of normal distribution function is presented by means of BP NN. It is convenient for engineering application.