误差传播

Therefore, we should not only study the generation, propagation and control of hydrologic survey error, but also the theory and method of elimination of contradiction of hydrologic survey results.

因此，不仅需要深入研究水文测量误差的产生、传播与控制，还要研究消除水文测量成果之间矛盾的理论和方法。

Precision estimation is made more reliable using error calculation by the law of covariance propagation.

采用协方差传播律进行误差计算，使精度评定的结果更加准确。

Based on analyzing the multilayer perceptron neural network,it induces the error backpropagation algorithm while taking the hyperboloid tangential function as nonlinear activation function.

在分析多层感知器神经网络的基础上，推导了双曲正切函数为激励函数的误差后向传播算法。

This paper introduces the homotopy algorithm into back-propagation neural network and indicates that the convergence speed can be improved and the defects of converging to local extremum can be eliminated.

同伦算法是解决非线性优化问题的新理论，将同伦算法引入误差反向传播神经网络，提高了网络的训练速度，消除了常规BP网络算法收敛于局部极值的缺点。

By employing multi-dimensional analysis and matrix algebra, the generation and evolution of measurement uncertainties are explicitly formulated, as well as their influence to motion estimation.

利用多元分析和矩阵代数等有力的数学工具，我们定量描述视觉系统对环境观测过程中测量误差的生成、传播及其对运动估计的影响。

An improved method was proposed in order to accelerate the convergence speed and shorten the training time of BP neural network.

0引言BP神经网络是一种基于误差反向传播算法的神经网络，由于具有高度非线性映射的能力，现已在各领域得到了广泛的应用，取得了令人满意的结果[1]。

After the free weights are preassigned,the new algorithm can find the target weights of the other layer by solving linear equation sets.

新算法不再采用误差反向传播原理，而是选择一层自由权，通过求解线性方程组求得另一层待求权。

As the choice of Neural Network will directly affect the detection data, BP based system is constructed by error reversion algorithm to train itself. It is simper and faster than other type of system.

由于系统所采用的神经网络的类型将直接影响数据检测结果的准确性，而BP神经网络是以误差反向传播算法对网络进行训练，其结构简单、收敛速度快；RBF 神经网络以简单变量的参数组合为函数来实现，具有训练速度比较快、性能比较好的特点。

METHOD:The error back-p ropagation method of artificial neural network has been used to determinate benzalkonium bromide and sodium nitrite without separating them.

应用BP方法即人工神经网络误差反向传播方法对其进行含量测定。

In terms of obore analysis and related statistical estimate, a robust back propagation algorithm for training the MFNN networks is proposed.

依据上述分析基础和有关统计估计方法，提出了训练MFNN网络的鲁棒误差反向传播算法；（4）。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。