误差传播

Using the improved error backward propagation, the model is trained with stylebook data and validated its effect by other stylebook data.

利用误差反向传播的改进算法对样本数据进行训练，并用另外的一些样本数据验证模型的应用效果。

Basically analysed bar case data the origin of uncertainty of sum of errors in vector data transition and transmission.

主要分析了栅格数据到矢量数据转换过程中的误差和不确定性来源以及传播。

The effects of several parameters of a digital ultrasonic borehole televiewer on system performance are analyzed, for example, those of the distance measuring error, the crack distinguishability, the side beam of the ultrasonic transducer and the wave propagation attenuation, The distance measuring error depends mainly on the accuracy of time measurement.

本文分析了数字井下超声电视系统中影响系统性能的几个主要参数，其中包括距离测量误差、系统的裂缝分辨力、超声换能器的副瓣影响以及声波的传播损耗等。

Excellent location results were obtained in double terminals simulation of travelling wave fault location.

本文利用仿真试验的办法计算出所能检测到的行波浪涌的平均传播速度，并将其用于行波故障测距的计算，将测距误差控制在300m以内。

BP neural network based on adaptive UKF is introduced in this paper for the standard BP neural network has slow converges,local minimum value and weak generalization ability.It can train weight of BP and improve the efficiency of BP without linearization by using the frame of Kalman filters and adaptive factor to adjust the variance of dynamic model.

1引言1986年，Rum elhart和M cC lelland等人在多层前向神经网络模型的基础上，提出了误差反向传播学习算法(BackPropagation简写BP)，该算法是目前在神经网络中应用最广泛的算法，它解决了多层前向神经网络的学习问题[1]。

The design of transplanter for rice growing in cupulate tray is the critical link in rice growing in cupulate tray technology,the design method is not mature,for exploring a new design method,having discussed neural network s serviceability in agriculture machinery mechanism design with the theoretical basis of self-organizing feature mapand the back-propagation network,the integrated SOM-BP nerve network model is applied in the field of transplanter s critical mechanism design for rice growing,al...

水稻钵育栽植机的设计是实现水稻钵育栽培技术的关键环节，区别于传统的水稻栽植机其关键部件的设计方法还不成熟，在理论研究方面还不完善。为探索新的设计方法，论述了神经网络算法对农业机械设计的适用性，以自组织特征映射网络SOM 和误差反向传播网络BP为理论基础，将SOM-BP集成神经网络模型应用于水稻钵育栽植机关键部件设计领域，建立神经网络模型，通过集成网络训练，得到设计结果。验证了SOM-BP神经网络在农业机械机设计中的正确性和精确性。

The efficient sand body in the Sulige gas field, developed in relatively small size and ellipse or long ellipse shape, is always distributed isolatedly.

而苏里格气田有效砂体则以孤立状分布为主，砂体规模较小，形态呈椭圆或长椭圆状，当压力传播至砂体宽度边界之后，将不再满足纯径向流的渗流规律，目前推导的产能方程存在较大误差。

Lobata sample were successfully class-identified by back-transmission ANN technology, and the correct rate of forecasting results was 97%, but can not identify between the P.

将样品的近红外光谱，利用误差反向传播人工神经网络技术对葛根与葛藤粉末样品进行了分类识别初探，预测正确率达97.65％。

The nonlinear transformations called the unscented transformation is applied to propagate the means and covariances of states, and the errors caused by linearization of extended Kalman filter is eliminated.

UKF采用确定性采样策略，通过UT变换实现状态均值和方差的非线性传播，避免了扩展卡尔曼滤波产生的线性化误差，并且无需计算雅可比矩阵。

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。