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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In the paper, the method of test about OE-PCB was reviewed. Including mainly Refractive Index, Optical Propagation Loss, Surface Roughness, Eye Pattern, Bite Error Rate test and Environment Impact.

文章介绍了印制光-电路板的测试方法，主要包括光波导的折射率测试、光传输损失测试、表面粗糙度测试、眼图测试、误码率测试、环境测试。

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In this paper, a novel data partitioning method is presented, aiming at reducing error propagation for video streaming.

提出一种有效降低误差扩散的数据分割方法。

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