The Powell's method and the net random-ray method are chosen as optimum methods.

选用了鲍威尔法和网格随机射线法，进行优化计算。

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It is also indicated that current WNN has a poor convergence performance because of adopting the random initialization method and gradient training algorithm of traditional BP NET.

还指出由于当前的连续小波神经网络主要使用传统BP神经网络的随机初始化方法和基于梯度的训练算法，因此存在收敛性差的缺点。

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The model with random tube net structure is used to analyses the penetrating coefficient of soil theoretically.

应用土壤的随机管子网络结构模型，从理论上对土壤的渗透系数进行了分析。

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Authors Guofo Zhou and Yingzi Zu use some complex math based on the random-walk theory to show that the odds of watching half your liquid net worth evaporate are roughly similar to those of another major life event: death.

FORBES: We Can't Avoid Another Market Crash