The stability of the error system is analyzed by a Lyapunov function, which shows that the errors are exponential convergent.
利用李亚普诺夫函数分析了误差系统的稳定性，说明误差是指数收敛的。
Used nonlinear function in learning, the algorithms can adjust automatically convergent rate.
将非线性函数引入学习过程，由算法自动调节学习速率。
When the minimal eigenvalue of connection weights matrix is greater than the reciprocal of derivation of its neuron activation function, the network will be convergent in parallel update mode.
当网络连接权值矩阵的最小特征值大于激活函数导数的倒数时，网络并行收敛。
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