自学习和自适应能力：BP神经网络在训练时，能够通过学习自动提取输出、输出数据间的“合理规则”，并自适应的将学习内容记忆于网络的权值中。即BP神经网络具有高度自学习和自适应的能力-Self-learning and adaptive capacity: BP neural network during training, the output can be automatically extracted by learning " rule of reason" between