BP neural network can implement approximating nonlinear functions by arbitrary accuracy through regulating variable weight connection. This character can fit the nonlinear functions relations.

BP神经网络通过调节连接权重可以实现以任意精度逼近非线性函数，利用这一特点可对非线性函数关系进行拟合。

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The relation between the study ability and the popularization ability of network at appearance of "over - fit" phenomenon during the construction of BP network model meets the uncertainty principle.

BP网络建模过程中，出现“过拟合”现象时网络学习能力与推广能力之间满足一般测不准关系。

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The BP neural network is used to fit data, through which quantitative analysis of defect signal can be obtained.

采用了BP神经网络对数据进行拟合，能够实现对裂纹信号的定量识别。

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Studies of the blowout preventer's two control pods suggest that a flattish battery and a dodgy valve meant that neither was in a fit state to close off the well automatically when they should have, which BP takes as evidence of poor maintenance by Transocean.

ECONOMIST: BP casts the blame for the Gulf oil spill widely