bp神经网络算法是解决最优化问题的先进算法之一,本论文讨论了神经网络中使用最为广泛的前馈神经网络。其网络权值学习算法中影响最大的就是误差反向传播算法(back-propagation简称BP算法)。BP算法存在局部极小点,收敛速度慢等缺点。基于优化理论的Levenberg-Marquardt算法忽略了二阶项。该文讨论当误差不为零或者不为线性函数即二阶项S(W)不能忽略时的Hesse矩阵的近似计算,进而训练网络。
上传时间: 2015-12-31
上传用户:wendy15
13th Israeli Symposium of AI, CV, and NN, Tel Aviv University, Tel Aviv, Israel, Feb. 2-4, 1997 D. Dori, D. Hubunk and Liu W, “Improving the Arc Detection
标签: D. Aviv University Symposium
上传时间: 2013-12-23
上传用户:水口鸿胜电器
/*** *** *** *** *** *** *** *** *** *** *** *** * File: whyt1_lib.c * * Library for accessing WHYT1 devices. * The code accesses hardware using WinDriver s WDC library. * Code was generated by DriverWizard v9.01. *
标签: accessing Library File whyt
上传时间: 2013-12-12
上传用户:qiao8960
*--- --- --- --声明--- --- --- -----*/ /* VC6.0下运行通过 此程序为本人苦心所做,请您在阅读的时候,尊重本人的 劳动。可以修改,但当做的每一处矫正或改进时,请将改进 方案,及修改部分发给本人 (修改部分请注名明:修改字样) Email: jink2005@sina.com QQ: 272576320 ——初稿完成:06-5-27 jink2005 补充: 程序存在问题: (1) follow集不能处理:U->xVyVz的情况 (2) 因本人偷懒,本程序为加入文法判断,故 输入的文法必须为LL(1)文法 (3) 您可以帮忙扩充:消除左递归,提取公因子等函数 (4) …… */ /*-----------------------------------------------*/ /*参考书《计算机编译原理——编译程序构造实践》 LL(1)语法分析,例1: ERTWF# +*()i# 文法G[E]:(按此格式输入) 1 E -> TR 2 R -> +TR 3 R -> 4 T -> FW 5 W -> * FW 6 W -> 7 F -> (E) 8 F -> i 分析例句:i*(i)# , i+i# 例2: 编译书5.6例题1 SHMA# adbe# S->aH H->aMd H->d M->Ab M-> A->aM A->e 分析例句:aaabd# */
上传时间: 2016-02-08
上传用户:ayfeixiao
auxilary files for the Crypt Breakers Workbench (cbw). CBW is a multi-window integrated workbench of tools that help a cryptanalist read files encrypted with the BSD4.2 crypt command. Anyone may copy, modify, use, or redistribute this system. It was originally written by Robert W. Baldwin at MIT
标签: multi-window integrated Workbench workbench
上传时间: 2013-12-10
上传用户:cjl42111
This document is an operation guide for the MPC8XXFADS board. It contains operational, functional and general information about the FADS. The MPC8XXFADS is meant to serve as a platform for s/ w and h/w development around the MPC8XX family processors. Using its on-board resources and its associated debugger, a developer is able to download his code, run it, set breakpoints, display memory and registers and connect his own proprietary h/w via the expansion connectors, to be incorporated to a desired system with the MPC8XX processor.
标签: operational MPC8XXFADS functional operation
上传时间: 2014-03-10
上传用户:zsjinju
Floyd-Warshall算法描述 1)适用范围: a)APSP(All Pairs Shortest Paths) b)稠密图效果最佳 c)边权可正可负 2)算法描述: a)初始化:dis[u,v]=w[u,v] b)For k:=1 to n For i:=1 to n For j:=1 to n If dis[i,j]>dis[i,k]+dis[k,j] Then Dis[I,j]:=dis[I,k]+dis[k,j] c)算法结束:dis即为所有点对的最短路径矩阵 3)算法小结:此算法简单有效,由于三重循环结构紧凑,对于稠密图,效率要高于执行|V|次Dijkstra算法。时间复杂度O(n^3)。 考虑下列变形:如(I,j)∈E则dis[I,j]初始为1,else初始为0,这样的Floyd算法最后的最短路径矩阵即成为一个判断I,j是否有通路的矩阵。更简单的,我们可以把dis设成boolean类型,则每次可以用“dis[I,j]:=dis[I,j]or(dis[I,k]and dis[k,j])”来代替算法描述中的蓝色部分,可以更直观地得到I,j的连通情况。
标签: Floyd-Warshall Shortest Pairs Paths
上传时间: 2013-12-01
上传用户:dyctj
This program is copyrighted by it s author and you are granted a free license to use the program for non-commercial purposes. If you are interested in using the program for commercial purposes please contact Kevin W. Russell at CIS 71551,253 for licensing information.
标签: program copyrighted granted license
上传时间: 2016-02-18
上传用户:wangzhen1990
unix环境高级编程英文版,很经典的一本书 Advanced Programming in the UNIX® Environment: Second Edition By W. Richard Stevens, Stephen A. Rago Publisher: Addison Wesley Professional Pub Date: June 17, 2005 ISBN: 0201433079 Pages: 960
上传时间: 2013-12-22
上传用户:qiao8960
编写一个用SOR法解方程组Ax=b的计算机程序,其中 要求程序中不存系数A,分别对不同的阶数(例如n=15,80)取w=1.7,1.8,1.9,进行迭代,记录近似解 达到 时所用迭代次数k,观察松弛因子对收敛速度的影响。
上传时间: 2013-12-25
上传用户:wcl168881111111