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BP网络是一种应用最为广泛的神经网络，但在其实际应用中存在较多的困难。本文就网络结构的确定、传递函数的选择、网络初始权值的确定和改进的学习算法等问题进行了探讨，并给出了解决问题的建议．
BP network is one of the most widely used neural networks, but there are many difficulties in its practical application. In this paper, the problems of determining the network structure, choosing the transfer function, determining the initial weight of the network and improving the learning algorithm are discussed in this paper. Some suggestions are given to solve the problem.