神经网络

Multilayer feedforward neural network is the most popular one in practice.

多层前馈神经网络是在实践中应用最为广泛的一种神经网络。

Feedforward Multilayer Neural Network has been extensively studied due to its importance and wide application.

摘要作为神经网络重要模型之一的前向神经网络一直是人们研究的热点。

We use the filtered variables to build Ridge estimation equation, and calculate the multiple correlation coefficient, at the same time passed the correlation test of the Ridge estimation equation; we built forward neural network model based on SCG method and momentum method under the MATLAB 6.5 situation, when estimating the fuel load of the sampled plots, the average precision of the artificial neural network model is 89.51%.

利用筛选出的自变量构建岭估计方程，并通过了岭估计方程的相关检验；在MATLAB6.5环境下构建基于SCG法和动量法的前向神经网络模型，在对所设置实验样地可燃物估测中人工神经网络模型估测的平均精度为89.5%。

This thesis was Carried out basing on the Seals Automatically Reorganization project in a Information Science Company of ChongQing municipalization.

摘要本文的研究工作是结合市内某信息科技公司的"印鉴自动识别系统"研发项目开展的，作者在深入分析了人工神经网络的各种数学模型及算法的基础上，重点剖析了前馈神经网络的算法思想，对其进行了实用、有效的改进，并将它成功的应用于"图象识别技术"，取得了较为满意的成果。

This thesis was Carried out basing on the Seals Automatically Reorganization project in a Information Science Company of ChongQing municipalization. In the paper, based on the analyzing of the mathematical models and their algorithms of kinds of Artificial Neural Networks, the author analyzed the algorithm of the Back-Propagation networks model, at the same time, the author improved the algorithm practically and effectively, and applied it in the recognition technique of digital image successfully.

本文的研究工作是结合市内某信息科技公司的"印鉴自动识别系统"研发项目开展的，作者在深入分析了人工神经网络的各种数学模型及算法的基础上，重点剖析了前馈神经网络的算法思想，对其进行了实用、有效的改进，并将它成功的应用于"图象识别技术"，取得了较为满意的成果。

Using an improved genetic algorithm combined with a BP algorithm a new method IGA-BP,QSAR model was developed that links molecular structures of a set of 50 alkylated and/or halogenated phenols with their polar narcosis toxicity.

采用改进的遗传算法和BP人工神经网络相结合的方法，研究了50个酚类化合物的麻醉毒性和分子结构之间的相关性，并与单纯用BP人工神经网络建立的模型进行比较。

The intensity of pulse noisy pixels significantly differs from adjacent pixels of image. The de-noising will be accomplished by modifying the intensity of the noisy pixel according to the firing patterns of adjacent neurons of PCNN. At last, this dissertation suggests a new kind of filter for de-noising pulse noise based on the PCNN and median filter. It is very simple, and the simulation experiment of the image processing shows that the de-noising effect is much better than neighborhood averaging method and median filter.

一般脉冲噪声点与其所在图像像素灰度值之间相关性很差，而PCNN脉冲耦合神经网络能使相似神经元同步激发；这就决定亮点脉冲噪声像素对应神经元会在其区域所在相邻神经元中首先激发，为此结合中值滤波，我们提出了结合PCNN脉冲耦合神经网络和中值滤波的混合滤波新算法，理论分析和实验证明，该方案在滤除噪声的同时，比常规中值滤波更有效地保持了图像的高频细节信息。

The fire detecting scheme based on nerve net has been discussed in the lastpart of this dissertation. First, the basic concept of nerve net has been introduced.

首先介绍了神经网络的基本概念，接着给出了神经网络的具体结构和输入输出单元的设计方案。

BP model in artificial nerve net model is adopted to predict stuck operating mode in drilling well and artificial nerve net software in predicting system is developed in the paper.

采用人工神经网络模型中BP模型对现场的钻井工况进行卡钻预测，并开发了人工神经网络实时卡钻预测系统软件。

In order to calculate a mass of matrix operations of network , the MATLAB is used and the better results are obtained .

因神经网络的运算涉及大量的矩阵运算，所以采用了MATLAB这一平台来构造BP神经网络，取得了良好的效果。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。