In this paper, that the formula of cannot be tenable is pointed out because of the component of the momentum functor not always satisfying the self-adjointness in the curvilinear coordinate system.
指出由于在曲线坐标系中，动量算符的分量不一定满足自伴性，因而公式不能成立。
2
During the self learning process, the adaptive learning rate and momentum gene are introduced to accelerate the rate of convergence and advance the identify accuracy.
在神经网络自学习过程中，引入了自适应学习速率和动量法，加快了网络的收敛速度，提高了网络的辨识精度。
3
BP network model and BP algorithm are also researched and BP algorithm is improved by adding the momentum item and self-adapting the length of train step.