| 新的三层BP神经网络算法在解谱分析中的应用 |
| |
| 引用本文： | 郦文忠,谢涛,曹利国.新的三层BP神经网络算法在解谱分析中的应用[J].科学技术与工程,2009,9(4). |
| |
| 作者姓名： | 郦文忠 谢涛 曹利国 |
| |
| 作者单位： | 1. 成都理工大学工程技术学院核工系,乐山,614007;核工业西南物理研究院,成都,610041
2. 成都理工大学工程技术学院核工系,乐山,614007 |
| |
| 基金项目： | 成都理工大学工程技术学院科研发展基金，国际基础科研基金 |
| |
| 摘 要： | 介绍了一个三层BP(back propagation)神经网络结构,并推导出LM(Levenberg-Marquardt)算法对网络的权重和偏置的更新.然后用LM算法和带动量的梯度算法来分别训练网络.结果表明:这两种算法得到的残差都在一个很小的范围内,应用神经网络技术解复杂X射线谱具有良好的优越性;而LM算法收敛更快,为我们节约了大量的解谱时间.还对解谱的残差进行了分析,提出了神经网络解谱的过程中需要注意的问题及其缺陷.
|
| 关 键 词： | BP神经网络 LM算法 X射线谱 解谱 |
Application of New L-M Method in X-Ray Fluorescence Analysis |
| |
| LI Wen-zhong,XIE Tao,CAO Li-guo.Application of New L-M Method in X-Ray Fluorescence Analysis[J].Science Technology and Engineering,2009,9(4). |
| |
| Authors: | LI Wen-zhong XIE Tao CAO Li-guo |
| |
| Institution: | Department of Nuclear Engineering and Nuclear Technology;Engineering & Technical College;Chengdu University of Technology1;Leshan 614007;P.R.China;Southwestern Institute of Physics2;Chengdu 610041;P.R.China |
| |
| Abstract: | A back-propagation neutral network of three layers structure is presented,and updating of weighting and bias of network is induced via LM(Levenberg-Marquardt)algorithm.By use of LM algorithm and gradient descent algorithm with momentum term,network training indicates the residual error of those is limited in a small extent,and it is a great advantage of analyzing complex X-Ray spectrum using neutral network,and LM algorithm saves us lots working time because of its faster convergence.At last,residual error ... |
| |
| Keywords: | BP neutral network LM algorithm X-ray spectrum analyzing complex spectrum |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
