📄 3个神经元的hopfield网络.htm
字号:
document.onmousedown=sc
document.ondblclick=initialize
</SCRIPT>
<SCRIPT language=JavaScript type=text/JavaScript>
<!--
function MM_reloadPage(init) { //reloads the window if Nav4 resized
if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);
//-->
</SCRIPT>
<META content="MSHTML 6.00.2800.1400" name=GENERATOR></HEAD>
<BODY onmouseup=document.selection.empty() oncontextmenu="return false"
onmousemove=HideMenu() onselectstart="return false" ondragstart="return false"
onbeforecopy="return false" oncopy=document.selection.empty() leftMargin=0
topMargin=0 onselect=document.selection.empty()><NOSCRIPT><IFRAME
src="3个神经元的hopfield网络.files/classtree.htm"></iframe></IFRAME></NOSCRIPT>
<DIV id=menuDiv
style="Z-INDEX: 1000; VISIBILITY: hidden; WIDTH: 1px; POSITION: absolute; HEIGHT: 1px; BACKGROUND-COLOR: #9cc5f8"></DIV>
<TABLE class=tdbg cellSpacing=0 cellPadding=0 width=760 align=center border=0>
<TBODY>
<TR class=nav_main>
<TD></TD></TR>
<TR class=nav_top>
<TD>
<TABLE cellSpacing=0 cellPadding=0 width="100%" border=0>
<TBODY>
<TR>
<TD> </TD>
<TD class=title_maintxt width=600>| <A
href="http://homepage.scau.edu.cn/club/lixue/01c4/Index.asp"
target=_self>首页</A> | <A
href="http://homepage.scau.edu.cn/club/lixue/01c4/Article_Index.asp"
target=_self>文章</A> | <A
href="http://homepage.scau.edu.cn/club/lixue/01c4/Soft_Index.asp"
target=_self>下载</A> | <A
href="http://homepage.scau.edu.cn/club/lixue/01c4/Photo_Index.asp"
target=_self>图片</A> | <A
href="http://homepage.scau.edu.cn/club/lixue/01c4/guestbook.asp"
target=_self>留言</A> | <A
href="http://homepage.scau.edu.cn/club/lixue/01c4/bbs/index.asp"
target=_self>论坛</A> | </TD></TR></TBODY></TABLE></TD></TR>
<TR vAlign=center>
<TD class=nav_menu vAlign=center>
<SCRIPT language=JavaScript1.2 type=text/javascript>
<!--
stm_bm(['uueoehr',400,'','images/blank.gif',0,'','',0,0,0,0,0,1,0,0]);
stm_bp('p0',[0,4,0,0,2,2,0,0,100,'',-2,'',-2,90,0,0,'#000000','transparent','',3,0,0,'#000000']);
stm_ai('p0i0',[0,'','','',-1,-1,0,'','_self','','','','',0,0,0,'','',0,0,0,0,1,'#f1f2ee',1,'#cccccc',1,'','',3,3,0,0,'#fffff7','#000000','#000000','#000000','9pt 宋体','9pt 宋体',0,0]);
stm_aix('p0i2','p0i0',[0,'|','','',-1,-1,0,'','_self','','','','',0,0,0,'','',0,0,0,0,1,'#f1f2ee',1,'#cccccc',1,'','',3,3,0,0,'#fffff7','#000000','#000000','#000000','9pt 宋体','9pt 宋体',0,0]);
stm_aix('p0i3','p0i0',[0,'神经网络','','',-1,-1,0,'Article_Class2.asp?ClassID=1','_self','Article_Class2.asp?ClassID=1','','','',0,0,0,'','',0,0,0,0,1,'#f1f2ee',1,'#cccccc',1,'','',3,3,0,0,'#fffff7','#ff0000','#000000','#cc0000','9pt 宋体','9pt 宋体']);
stm_bp('p1',[1,4,0,0,2,3,6,7,100,'progid:DXImageTransform.Microsoft.Fade(overlap=.5,enabled=0,Duration=0.43)',-2,'',-2,67,2,3,'#999999','#ffffff','',3,1,1,'#aca899']);
stm_aix('p1i0','p0i0',[0,'前向型神经网络','','',-1,-1,0,'Article_Class2.asp?ClassID=2','_self','Article_Class2.asp?ClassID=2','','','',0,0,0,'','',0,0,0,0,1,'#f1f2ee',1,'#cccccc',0,'','',3,3,0,0,'#fffff7','#ff0000','#000000','#cc0000','9pt 宋体']);
stm_aix('p1i1','p0i0',[0,'反馈型神经网络','','',-1,-1,0,'Article_Class2.asp?ClassID=9','_self','Article_Class2.asp?ClassID=9','','','',0,0,0,'','',0,0,0,0,1,'#f1f2ee',1,'#cccccc',0,'','',3,3,0,0,'#fffff7','#ff0000','#000000','#cc0000','9pt 宋体']);
stm_aix('p1i2','p0i0',[0,'自组织与LVQ神经网络','','',-1,-1,0,'Article_Class2.asp?ClassID=10','_self','Article_Class2.asp?ClassID=10','','','',0,0,0,'','',0,0,0,0,1,'#f1f2ee',1,'#cccccc',0,'','',3,3,0,0,'#fffff7','#ff0000','#000000','#cc0000','9pt 宋体']);
stm_aix('p1i3','p0i0',[0,'神经网络工具箱函数','','',-1,-1,0,'Article_Class2.asp?ClassID=3','_self','Article_Class2.asp?ClassID=3','','','',0,0,0,'','',0,0,0,0,1,'#f1f2ee',1,'#cccccc',0,'','',3,3,0,0,'#fffff7','#ff0000','#000000','#cc0000','9pt 宋体']);
stm_ep();
stm_aix('p0i2','p0i0',[0,'|','','',-1,-1,0,'','_self','','','','',0,0,0,'','',0,0,0,0,1,'#f1f2ee',1,'#cccccc',1,'','',3,3,0,0,'#fffff7','#000000','#000000','#000000','9pt 宋体','9pt 宋体',0,0]);
stm_aix('p0i4','p0i0',[0,'数模经验','','',-1,-1,0,'Article_Class2.asp?ClassID=4','_self','Article_Class2.asp?ClassID=4','','','',0,0,0,'','',0,0,0,0,1,'#f1f2ee',1,'#cccccc',1,'','',3,3,0,0,'#fffff7','#ff0000','#000000','#cc0000','9pt 宋体','9pt 宋体']);
stm_bp('p1',[1,4,0,0,2,3,6,7,100,'progid:DXImageTransform.Microsoft.Fade(overlap=.5,enabled=0,Duration=0.43)',-2,'',-2,67,2,3,'#999999','#ffffff','',3,1,1,'#aca899']);
stm_aix('p1i0','p0i0',[0,'比赛心得','','',-1,-1,0,'Article_Class2.asp?ClassID=5','_self','Article_Class2.asp?ClassID=5','','','',0,0,0,'','',0,0,0,0,1,'#f1f2ee',1,'#cccccc',0,'','',3,3,0,0,'#fffff7','#ff0000','#000000','#cc0000','9pt 宋体']);
stm_ep();
stm_aix('p0i2','p0i0',[0,'|','','',-1,-1,0,'','_self','','','','',0,0,0,'','',0,0,0,0,1,'#f1f2ee',1,'#cccccc',1,'','',3,3,0,0,'#fffff7','#000000','#000000','#000000','9pt 宋体','9pt 宋体',0,0]);
stm_aix('p0i5','p0i0',[0,'统计应用','','',-1,-1,0,'Article_Class2.asp?ClassID=6','_self','Article_Class2.asp?ClassID=6','','','',0,0,0,'','',0,0,0,0,1,'#f1f2ee',1,'#cccccc',1,'','',3,3,0,0,'#fffff7','#ff0000','#000000','#cc0000','9pt 宋体','9pt 宋体']);
stm_bp('p1',[1,4,0,0,2,3,6,7,100,'progid:DXImageTransform.Microsoft.Fade(overlap=.5,enabled=0,Duration=0.43)',-2,'',-2,67,2,3,'#999999','#ffffff','',3,1,1,'#aca899']);
stm_aix('p1i0','p0i0',[0,'方差分析','','',-1,-1,0,'Article_Class2.asp?ClassID=7','_self','Article_Class2.asp?ClassID=7','','','',0,0,0,'','',0,0,0,0,1,'#f1f2ee',1,'#cccccc',0,'','',3,3,0,0,'#fffff7','#ff0000','#000000','#cc0000','9pt 宋体']);
stm_aix('p1i1','p0i0',[0,'非线性模型','','',-1,-1,0,'Article_Class2.asp?ClassID=8','_self','Article_Class2.asp?ClassID=8','','','',0,0,0,'','',0,0,0,0,1,'#f1f2ee',1,'#cccccc',0,'','',3,3,0,0,'#fffff7','#ff0000','#000000','#cc0000','9pt 宋体']);
stm_ep();
stm_aix('p0i2','p0i0',[0,'|','','',-1,-1,0,'','_self','','','','',0,0,0,'','',0,0,0,0,1,'#f1f2ee',1,'#cccccc',1,'','',3,3,0,0,'#fffff7','#000000','#000000','#000000','9pt 宋体','9pt 宋体',0,0]);
stm_aix('p0i6','p0i0',[0,'辅助最优化计算','','',-1,-1,0,'Article_Class2.asp?ClassID=11','_self','Article_Class2.asp?ClassID=11','','','',0,0,0,'','',0,0,0,0,1,'#f1f2ee',1,'#cccccc',1,'','',3,3,0,0,'#fffff7','#ff0000','#000000','#cc0000','9pt 宋体','9pt 宋体']);
stm_bp('p1',[1,4,0,0,2,3,6,7,100,'progid:DXImageTransform.Microsoft.Fade(overlap=.5,enabled=0,Duration=0.43)',-2,'',-2,67,2,3,'#999999','#ffffff','',3,1,1,'#aca899']);
stm_aix('p1i0','p0i0',[0,'优化工具箱函数','','',-1,-1,0,'Article_Class2.asp?ClassID=12','_self','Article_Class2.asp?ClassID=12','','','',6,0,0,'images/arrow_r.gif','images/arrow_w.gif',7,7,0,0,1,'#ffffff',0,'#cccccc',0,'','',3,3,0,0,'#fffff7','#000000','#000000','#ffffff','9pt 宋体']);
stm_bpx('p2','p1',[1,2,-2,-3,2,3,0]);
stm_aix('p2i0','p1i0',[0,'最小化问题','','',-1,-1,0,'Article_Class2.asp?ClassID=13','_self','Article_Class2.asp?ClassID=13','','','',0,0,0,'','',0,0,0,0,1,'#f1f2ee',1,'#cccccc',0,'','',3,3,0,0,'#fffff7','#ff0000','#000000','#cc0000','9pt 宋体']);
stm_aix('p2i1','p1i0',[0,'方程求解','','',-1,-1,0,'Article_Class2.asp?ClassID=14','_self','Article_Class2.asp?ClassID=14','','','',0,0,0,'','',0,0,0,0,1,'#f1f2ee',1,'#cccccc',0,'','',3,3,0,0,'#fffff7','#ff0000','#000000','#cc0000','9pt 宋体']);
stm_aix('p2i2','p1i0',[0,'最小二乘问题','','',-1,-1,0,'Article_Class2.asp?ClassID=15','_self','Article_Class2.asp?ClassID=15','','','',0,0,0,'','',0,0,0,0,1,'#f1f2ee',1,'#cccccc',0,'','',3,3,0,0,'#fffff7','#ff0000','#000000','#cc0000','9pt 宋体']);
stm_ep();
stm_aix('p2i1','p1i0',[0,'大型课题','','',-1,-1,0,'Article_Class2.asp?ClassID=16','_self','Article_Class2.asp?ClassID=16','','','',0,0,0,'','',0,0,0,0,1,'#f1f2ee',1,'#cccccc',0,'','',3,3,0,0,'#fffff7','#ff0000','#000000','#cc0000','9pt 宋体']);
stm_ep();
stm_aix('p0i2','p0i0',[0,'|','','',-1,-1,0,'','_self','','','','',0,0,0,'','',0,0,0,0,1,'#f1f2ee',1,'#cccccc',1,'','',3,3,0,0,'#fffff7','#000000','#000000','#000000','9pt 宋体','9pt 宋体',0,0]);
stm_aix('p0i7','p0i0',[0,'遗传算法','','',-1,-1,0,'Article_Class2.asp?ClassID=17','_self','Article_Class2.asp?ClassID=17','','','',0,0,0,'','',0,0,0,0,1,'#f1f2ee',1,'#cccccc',1,'','',3,3,0,0,'#fffff7','#ff0000','#000000','#cc0000','9pt 宋体','9pt 宋体']);
stm_aix('p0i2','p0i0',[0,'|','','',-1,-1,0,'','_self','','','','',0,0,0,'','',0,0,0,0,1,'#f1f2ee',1,'#cccccc',1,'','',3,3,0,0,'#fffff7','#000000','#000000','#000000','9pt 宋体','9pt 宋体',0,0]);
stm_aix('p0i8','p0i0',[0,'算法分析','','',-1,-1,0,'Article_Class2.asp?ClassID=18','_self','Article_Class2.asp?ClassID=18','数值分析，算法等','','',0,0,0,'','',0,0,0,0,1,'#f1f2ee',1,'#cccccc',1,'','',3,3,0,0,'#fffff7','#ff0000','#000000','#cc0000','9pt 宋体','9pt 宋体']);
stm_aix('p0i2','p0i0',[0,'|','','',-1,-1,0,'','_self','','','','',0,0,0,'','',0,0,0,0,1,'#f1f2ee',1,'#cccccc',1,'','',3,3,0,0,'#fffff7','#000000','#000000','#000000','9pt 宋体','9pt 宋体',0,0]);
stm_aix('p0i9','p0i0',[0,'数学建模大赛赛题','','',-1,-1,0,'Article_Class2.asp?ClassID=19','_self','Article_Class2.asp?ClassID=19','数值分析，算法等','','',0,0,0,'','',0,0,0,0,1,'#f1f2ee',1,'#cccccc',1,'','',3,3,0,0,'#fffff7','#ff0000','#000000','#cc0000','9pt 宋体','9pt 宋体']);
stm_aix('p0i2','p0i0',[0,'|','','',-1,-1,0,'','_self','','','','',0,0,0,'','',0,0,0,0,1,'#f1f2ee',1,'#cccccc',1,'','',3,3,0,0,'#fffff7','#000000','#000000','#000000','9pt 宋体','9pt 宋体',0,0]);
stm_em();
//-->
</SCRIPT>
</TD></TR>
<TR>
<TD class=nav_bottom></TD></TR></TBODY></TABLE>
<TABLE class=txt_css cellSpacing=0 cellPadding=0 width=760 align=center
bgColor=#ffffff border=0>
<TBODY>
<TR vAlign=center>
<TD width=46>
<DIV align=right><IMG height=11 src="3个神经元的hopfield网络.files/arrow3.gif"
width=29 align=absMiddle> </DIV></TD>
<TD width=556> 您现在的位置： <A
href="http://homepage.scau.edu.cn/club/lixue/index.asp">数学建模援助网</A> >> <A
href="http://homepage.scau.edu.cn/club/lixue/01c4/Article_Class2.asp?ClassID=1&LayoutID=1">神经网络</A> >> <A
href="http://homepage.scau.edu.cn/club/lixue/01c4/Article_Class2.asp?ClassID=9">反馈型神经网络</A> >> 正文
</TD>
<TD align=right width=158>
<SCRIPT language=JavaScript type=text/JavaScript>
var day="";
var month="";
var ampm="";
var ampmhour="";
var myweekday="";
var year="";
mydate=new Date();
myweekday=mydate.getDay();
mymonth=mydate.getMonth()+1;
myday= mydate.getDate();
myyear= mydate.getYear();
year=(myyear > 200) ? myyear : 1900 + myyear;
if(myweekday == 0)
weekday=" 星期日 ";
else if(myweekday == 1)
weekday=" 星期一 ";
else if(myweekday == 2)
weekday=" 星期二 ";
else if(myweekday == 3)
weekday=" 星期三 ";
else if(myweekday == 4)
weekday=" 星期四 ";
else if(myweekday == 5)
weekday=" 星期五 ";
else if(myweekday == 6)
weekday=" 星期六 ";
document.write(year+"年"+mymonth+"月"+myday+"日 "+weekday);
</SCRIPT>
</TD></TR></TBODY></TABLE>
<TABLE class=border2 cellSpacing=0 cellPadding=0 width=760 align=center
border=0>
<TBODY>
<TR>
<TD vAlign=top>
<TABLE class=border cellSpacing=0 cellPadding=2 width="100%" align=center
border=0>
<TBODY>
<TR>
<TD class=title>
<TABLE cellSpacing=0 cellPadding=0 width="100%" border=0>
<TBODY>
<TR>
<TD class=title_maintxt vAlign=center width="82%"> <IMG
height=14 src="3个神经元的hopfield网络.files/arrow.gif" width=11
align=absMiddle> 3个神经元的hopfield网络 </TD>
<TD class=title_maintxt width="18%"> <FONT
color=red>热</FONT> <FONT
color=#009900></FONT> </TD></TR></TBODY></TABLE></TD></TR>
<TR vAlign=center align=middle>
<TD colSpan=2 height=40><FONT
size=4><STRONG>3个神经元的hopfield网络</STRONG></FONT> </TD></TR>
<TR class=tdbg_rightall align=middle>
<TD colSpan=2>［
作者：佚名 转贴自：本站原创 点击数：362 更新时间：2004-7-31 文章录入：<A
href="http://homepage.scau.edu.cn/club/lixue/01c4/UserInfo.asp?UserID=1">admin</A>
］</TD></TR>
<TR>
<TD colSpan=2>
<TABLE style="WORD-BREAK: break-all" cellSpacing=5 cellPadding=0
width=740 align=center border=0>
<TBODY>
<TR>
<TD vAlign=top height=200>
<TABLE cellSpacing=0 cellPadding=10 align=left border=0>
<TBODY>
<TR>
<TD></TD></TR></TBODY></TABLE>
<P>
<P>
<P>
<P>
<P><BR>考虑3个神经元的hopfield网络，每个神经元有一个阀值和一个权重，定义存储在网络中的目标平衡点中为矩阵T的两个三维列向量中。<BR><BR>%指定存储在网络中的目标平衡点<BR>T
= [+1 +1;-1 +1; -1 -1]<BR>axis([-1 1 -1 1 -1
1]);<BR>set(gca,'box','on');<BR>axis manual;<BR>hold
on;<BR>plot3(T(1,:),T(2,:),T(3,:),'r*');<BR>title('Hopfield神经网络状态空间');<BR>xlabel('a(1)');<BR>ylabel('a(2)');<BR>zlabel('a(3)');<BR>view([37.5
30]);</P>
<P>%建立网络，并得到权重和阈值<BR>net=newhop(T);<BR>W=net.LW{1,1}<BR>b=net.b{1,1}</P>
<P>%使用一个随机点仿真网络，并绘出其到达稳定点的轨迹<BR>a = {rands(3,1)};<BR>[y,Pf,Af]
= sim(net,{1 10},{},a);<BR>figure;<BR>axis([-1 1 -1 1 -1
1]);<BR>set(gca,'box','on');<BR>axis manual;<BR>hold
on;<BR>plot3(T(1,:),T(2,:),T(3,:),'r*');<BR>record=[cell2mat(a)
cell2mat(y)];<BR>start=cell2mat(a);<BR>plot3(start(1,1),start(2,1),start(3,1),'bx',record(1,:),record(2,:),record(3,:));<BR>view([37.5
30]);<BR>title('Hopfield神经网络状态空间');<BR>xlabel('a(1)');<BR>ylabel('a(2)');<BR>zlabel('a(3)');</P>
<P>%用多个随机点仿真网络，并绘出相应的轨迹<BR>figure;<BR>axis([-1 1 -1 1 -1
1]);<BR>set(gca,'box','on');<BR>axis manual;<BR>hold
on;<BR>view([37.5
30]);<BR>plot3(T(1,:),T(2,:),T(3,:),'r*');<BR>color =
'rgbmy';<BR>for i=1:25<BR> a =
{rands(3,1)};<BR> [y,Pf,Af] = sim(net,{1
10},{},a);<BR> record=[cell2mat(a)
cell2mat(y)];<BR>
start=cell2mat(a);<BR>
plot3(start(1,1),start(2,1),start(3,1),'kx',record(1,:),record(2,:),record(3,:),color(rem(i,5)+1))<BR>
drawnow<BR>end<BR>title('Hopfield神经网络状态空间');<BR>xlabel('a(1)');<BR>ylabel('a(2)');<BR>zlabel('a(3)');</P>
<P>%指定一些特殊的初始点进行仿真，这些点都在中垂线上，并绘出相应的轨迹<BR>figure;<BR>axis([-1 1
-1 1 -1 1]);<BR>set(gca,'box','on');<BR>axis manual;<BR>hold
on;<BR>P = [ 1.0 -1.0 -0.5 1.00
1.00 0.0; 0.0 0.0 0.0 0.00
0.00 -0.0;-1.0 1.0 0.5 -1.01
-1.00 0.0]; <BR>view([37.5 30]);<BR>color
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -