用能量估计法证明了格式的稳定性及二阶收敛性；
The second-order convergence and stability of the scheme are proved with energy method.
该算法具有二阶收敛性，其有效性为文中展示的图像分离测试效果所证实。
The algorithm is two-order convergent, Whose validity is confirmed by effect of the image separation test.
为改进网络学习效率及大范围收敛性，提出了网络权值学习的单调同伦方法，该方法具有与牛顿法相同的二阶收敛性。
To improve the learning efficiency and global convergence we present the monotone homotopy method, which has the same convergence as the Newton's method, to train the weights of the network.
这种差分格式虽然只有一阶的局部截断误差，但实际具有二阶的收敛性。
The scheme exhibits global second order accuracy, despite its first order local truncation error.
这种差分格式虽然只有一阶的局部截断误差，但实际具有二阶的收敛性。
The scheme exhibits global second order accuracy, despite its first order local truncation error.
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