以下为句子列表：
英文: A non linear mapping function from multiple input data (damage parameters-damage locations and damage extents) to multiple output data (differences of displacements between damaged structure and intact structure calculated by FEM) is constructed within BP
中文: 摘要利用神经网络对有限元计算的样本数据建立起桥梁结构的损伤参数－损伤位置、损伤程度（输入）以及位移差－损伤结构与完好结构的位移差（输出）的全局性映射关系，以获得遗传算法求解桥梁结构损伤问题所需的目标函数值，从而识别桥梁的损伤参数。
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英文: Considering the influence of dynamical factor of sediment discharge as well as the difficulty of calculating number of input cell, the model is provided with strong nonlinear mapping capacity and applied to simulate and forecast monthly sediment discharge
中文: 模型既能考虑到影响输沙量时间序列的动力因子，又能解决网络的输入单元数确定的困难和利用神经网络超强的非线性映射功能，通过对龙川江流域控制站月输沙量的拟合与预测表明其结果合理，预测精度较高。
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英文: In this paper, cameras are calibrated implicitly using BP neural network by means of its ability to fit the complicated nonlinear mapping relation.
中文: 摘要利用人工神经网络对复杂非线性映射关系的强大逼近能力，对双目视觉三维测量系统中的摄像机进行隐式标定。
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