sigmoid函数 meaning in English

sigmoid function

This paper combines theory of wavelet analysis with conventional neural network . substituting wavelet function for sigmoid function in neural network , to form wavelet neural network
本文将小波分析理论与传统神经网络理论相结合，用小波函数代替传统神经网络中的sigmoid函数，构成小波神经网络。
Finally , bp neural network is improved for face recognition , the problem on choice of parameters is discussed , the sigmoid function and weight adjustment are improved for higher convergence speed
讨论了传统bp神经网络的参数选取问题,对sigmoid函数和网络学习速率进行了改进,以提高系统的收敛速度和收敛率。