This paper classifies patterns by using four-layer BP network and the learning method of error inverse propagation.

文章在深入分析基本BP算法的基础上，采用四层BP网络，利用误差逆传播学习方法实现了对模式的分类。

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The regular patterns of the propagation of quasi-40-day oscillations along the equator and some great circle routes are analysed and revealed by a complex empirical orthogonal function (CEOF) method.

采用复经验正交函数(CEOF)方法分析了准40天振荡沿赤道和某些大圆路径传播的规律。

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These patterns of action, either the well constructed image plant or the viral propagation of a fetishistic content type, are both highly effective at generating disproportionate reactions.

FORBES: The Hoaxer, The Troll And The Running Of The Digital Herd