?? b神經網絡建模及matlab中重要的bp網絡函數 - 清楓 - 岳樺 - 和訊博客.mht
字號:
<P><SPAN>=D2=FE=BA=AC=B2=E3=A3=BA</SPAN><SPAN lang=3DEN-US><SUB> =
</SUB></SPAN></P>
<P><SPAN =
lang=3DEN-US>3</SPAN><SPAN>=A3=AE=B7=FB=BA=C5=CB=B5=C3=F7</SPAN></P>
<P><SPAN>=A6=CC</SPAN><SPAN>=A3=BA</SPAN><SPAN>=B1=ED=CA=BE=D2=BB=B8=F6=C8=
=B7=B6=A8=B5=C4=D2=D1=D6=AA=D1=F9=C6=B7=B5=C4=B1=EA=BA=C5=A3=BB</SPAN></P=
>
<P><SPAN lang=3DEN-US>i, j, =
k</SPAN><SPAN>=A3=BA=B7=D6=B1=F0=B6=D4=D3=A6=D3=DA=CA=E4=B3=F6=B2=E3=A1=A2=
=D2=FE=BA=AC=B2=E3=A1=A2=CA=E4=C8=EB=B2=E3=B5=C4=CF=C2=B1=EA=A3=BB</SPAN>=
</P>
<P><SPAN=20
lang=3DEN-US><SUB></SUB></SPAN><SPAN>=BD=AB=B5=DA</SPAN><SPAN>=A6=CC</SPA=
N><SPAN>=B8=F6=D1=F9=C6=B7=B5=C4=D4=AD=CA=BC=CA=FD=BE=DD=CA=E4=C8=EB=CD=F8=
=C2=E7=CA=B1=A3=AC=CF=E0=D3=A6=CA=E4=B3=F6=B5=A5=D4=AA=D7=B4=CC=AC=A3=BB<=
/SPAN></P>
<P><SPAN=20
lang=3DEN-US><SUB></SUB></SPAN><SPAN>=BD=AB=B5=DA</SPAN><SPAN>=A6=CC</SPA=
N><SPAN>=B8=F6=D1=F9=C6=B7=B5=C4=D4=AD=CA=BC=CA=FD=BE=DD=CA=E4=C8=EB=CD=F8=
=C2=E7=CA=B1=A3=AC=CF=E0=D3=A6=D2=FE=BA=AC=B5=A5=D4=AA=D7=B4=CC=AC=A3=BB<=
/SPAN></P>
<P><SPAN=20
lang=3DEN-US><SUB></SUB></SPAN><SPAN>=BD=AB=B5=DA</SPAN><SPAN>=A6=CC</SPA=
N><SPAN>=B8=F6=D1=F9=C6=B7=B5=C4=D4=AD=CA=BC=CA=FD=BE=DD=CA=E4=C8=EB=CD=F8=
=C2=E7=CA=B1=A3=AC=CF=E0=D3=A6=CA=E4=C8=EB=B5=A5=D4=AA=CA=FD=BE=DD=A3=BB<=
/SPAN></P>
<P><SPAN =
lang=3DEN-US>w<SUB>ij</SUB></SPAN><SPAN>=A3=BA=B4=D3=D2=FE=BA=AC=B2=E3=B5=
=DA</SPAN><SPAN=20
lang=3DEN-US>j</SPAN><SPAN>=B8=F6=C9=F1=BE=AD=D4=AA=B5=BD=CA=E4=B3=F6=B2=E3=
=B5=DA</SPAN><SPAN=20
lang=3DEN-US>i</SPAN><SPAN>=B8=F6=C9=F1=BE=AD=D4=AA=B5=C4=C1=AA=BD=D3=C7=BF=
=B6=C8=A3=BB</SPAN></P>
<P><SPAN =
lang=3DEN-US>w<SUB>jk</SUB></SPAN><SPAN>=A3=BA=B4=D3=CA=E4=C8=EB=B2=E3=B5=
=DA</SPAN><SPAN=20
lang=3DEN-US>k</SPAN><SPAN>=B8=F6=C9=F1=BE=AD=D4=AA=B5=BD=D2=FE=BA=AC=B2=E3=
=B5=DA</SPAN><SPAN=20
lang=3DEN-US>j</SPAN><SPAN>=B8=F6=C9=F1=BE=AD=D4=AA=B5=C4=C1=AA=BD=D3=C7=BF=
=B6=C8=A3=BB</SPAN></P>
<P><SPAN =
lang=3DEN-US>4</SPAN><SPAN>=A3=AE=CD=F8=C2=E7=CA=FD=BE=DD=C1=F7=B3=CC</SP=
AN></P>
<P><SPAN>=B6=D4=D3=A6=D3=DA=CA=E4=C8=EB=B2=E3=B5=C4=CA=E4=C8=EB=A3=BA</SP=
AN><SPAN lang=3DEN-US><SUB> </SUB></SPAN></P>
<P><SPAN>=D2=FE=B5=A5=D4=AA</SPAN><SPAN =
lang=3DEN-US>j</SPAN><SPAN>=B5=C4=CA=E4=C8=EB=CA=C7=A3=BA</SPAN><SPAN=20
lang=3DEN-US><SUB> </SUB></SPAN></P>
<P><SPAN>=B6=D4=D3=A6=B5=C4=CA=E4=B3=F6=CA=C7=A3=BA</SPAN><SPAN =
lang=3DEN-US><SUB> </SUB></SPAN></P>
<P><SPAN>=CA=E4=B3=F6=B5=A5=D4=AA</SPAN><SPAN =
lang=3DEN-US>i</SPAN><SPAN>=CA=D5=B5=BD=B5=C4=B5=FC=BC=D3=D0=C5=BA=C5=CA=C7=
=A3=BA</SPAN></P>
<P align=3Dcenter><SPAN lang=3DEN-US><SUB></SUB></SPAN></P>
<P><SPAN>=CA=E4=B3=F6=B5=A5=D4=AA</SPAN><SPAN =
lang=3DEN-US>i</SPAN><SPAN>=B5=C4=CA=E4=B3=F6=CA=C7=A3=BA</SPAN></P>
<P align=3Dcenter><SPAN lang=3DEN-US><SUB></SUB></SPAN></P>
<P><SPAN>=CF=D4=C8=BB=CA=E4=B3=F6=CA=C7=CB=F9=D3=D0=C8=A8</SPAN><SPAN=20
lang=3DEN-US>w=3D{w<SUB>ij</SUB>,w<SUB>jk</SUB>}</SPAN><SPAN>=B5=C4=BA=AF=
=CA=FD</SPAN></P>
<H2><SPAN>=CB=C4=A1=A2=CF=F2=BA=F3=B4=AB=B2=A5=CB=E3=B7=A8<SPAN =
lang=3DEN-US>(Back-Propagation)</SPAN></H2>
<P><SPAN>=C9=E8=D1=F9=C6=B7</SPAN><SPAN>=A6=CC=D4=DA=CA=E4=B3=F6=B5=A5=D4=
=AA<SPAN=20
lang=3DEN-US>i=C9=CF</SPAN><SPAN>=B5=C4=C0=ED=CF=EB=CA=E4=B3=F6=CE=AA</SP=
AN><SPAN lang=3DEN-US><SUB>=20
</SUB></SPAN><SPAN>=A3=AC=D4=F2=BA=AF=CA=FD=A3=BA</SPAN></P>
<P align=3Dcenter><SPAN lang=3DEN-US><SUB></SUB></SPAN></P>
<P><SPAN lang=3DEN-US></SPAN> </P>
<P><SPAN>=B1=ED=CA=BE=C1=CB=D4=DA=D2=BB=B6=A8=B5=C4=C8=A8=CF=C2=A3=AC=C0=ED=
=CF=EB=CA=E4=B3=F6=D3=EB=CA=B5=BC=CA=CA=E4=B3=F6=B5=C4=B2=EE=D2=EC=A1=A3=D2=
=F2=B4=CB=A3=AC=C8=B7=B6=A8=C8=A8</SPAN><SPAN=20
lang=3DEN-US>w</SPAN><SPAN>=B5=C4=CE=CA=CC=E2=BB=AF=CE=AA=C7=F3</SPAN><SP=
AN=20
lang=3DEN-US>E(w)</SPAN><SPAN>=B5=C4=BC=AB=D0=A1=D6=B5=CE=CA=CC=E2=A1=A3=BF=
=C9=D2=D4=B2=C9=D3=C3=D7=EE=CB=D9=CF=C2=BD=B5=CB=E3=B7=A8=A1=A3</SPAN></P=
>
<P><SPAN>=D7=EE=CB=D9=CF=C2=BD=B5=CB=E3=B7=A8=B2=BD=D6=E8=A3=BA</SPAN></P=
>
<P><SPAN =
lang=3DEN-US>1</SPAN><SPAN>=A3=A9=C8=CE=C8=A1=B3=F5=CA=BC=B5=E3</SPAN><SP=
AN=20
lang=3DEN-US>w<SUB>0</SUB></SPAN><SPAN>=A3=AC=BC=C6=CB=E3=B3=F6</SPAN><SP=
AN=20
lang=3DEN-US>w<SUB>0</SUB></SPAN><SPAN>=B5=C4=B8=BA=CC=DD=B6=C8=B7=BD=CF=F2=
=A3=BA</SPAN><SPAN=20
lang=3DEN-US>-</SPAN><SPAN>=A8=8C</SPAN><SPAN =
lang=3DEN-US>E(w<SUB>0</SUB>)</SPAN></P>
<P><SPAN lang=3DEN-US>2</SPAN><SPAN>=A3=A9=C8=A1=D0=C2=B5=E3</SPAN><SPAN =
lang=3DEN-US>w<SUB>1</SUB>=3Dw<SUB>0</SUB>+</SPAN><SPAN>=A1=F7</SPAN><SPA=
N=20
lang=3DEN-US>w=3Dw<SUB>0</SUB>-</SPAN><SPAN>=A6=C7=A8=8C</SPAN><SPAN=20
lang=3DEN-US>E(w<SUB>0</SUB>),</SPAN><SPAN>=CA=B9</SPAN><SPAN=20
lang=3DEN-US>E</SPAN><SPAN>=A3=A8</SPAN><SPAN=20
lang=3DEN-US>w<SUB>1</SUB></SPAN><SPAN>=A3=A9</SPAN><SPAN=20
lang=3DEN-US><E(w<SUB>0</SUB>)</SPAN></P>
<P><SPAN lang=3DEN-US>3</SPAN><SPAN>=A3=A9=C5=D0=B6=CF</SPAN></P>
<P><SPAN>=C6=E4=D6=D0</SPAN><SPAN>=A1=F7</SPAN><SPAN =
lang=3DEN-US>w</SPAN><SPAN>=B5=C4=BC=C6=CB=E3=C8=E7=CF=C2=A3=BA</SPAN></P=
>
<P><SPAN>=B6=D4=D3=DA=D2=FE=B5=A5=D4=AA=B5=BD=CA=E4=B3=F6=B5=A5=D4=AA=B5=C4=
=C8=A8=B5=C4=D0=DE=D5=FD=C1=BF=CE=AA</SPAN></P>
<P><SPAN lang=3DEN-US><SUB></SUB></SPAN></P>
<P><SPAN>=C6=E4=D6=D0</SPAN><SPAN lang=3DEN-US><SUB> </SUB></SPAN></P>
<P><SPAN>=B6=D4=D3=DA=CA=E4=C8=EB=B5=A5=D4=AA=B5=BD=D2=FE=B5=A5=D4=AA=B5=C4=
=C8=A8=B5=C4=D0=DE=D5=FD=C1=BF=CE=AA</SPAN></P>
<P><SPAN lang=3DEN-US><SUB></SUB></SPAN></P>
<P><SPAN>=C6=E4=D6=D0</SPAN><SPAN lang=3DEN-US><SUB> </SUB></SPAN></P>
<H2><SPAN>=CE=E5=A1=A2<SPAN lang=3DEN-US>Matlab=D6=D0 =
BP=C9=F1=BE=AD=CD=F8=C2=E7=B5=C4=CA=B5=CF=D6</SPAN></H2>
<P><SPAN =
lang=3DEN-US>1=A3=AE<B>BP=C9=F1=BE=AD=CD=F8=C2=E7=B5=C4=B3=F5=CA=BC=BB=AF=
</B></SPAN></P>
<P><B><SPAN lang=3DEN-US><SPAN> =
</SPAN></B><SPAN>=B8=F7=B2=E3=C9=F1=BE=AD=D4=AA=B8=F6=CA=FD<SPAN=20
lang=3DEN-US>,=B8=F7=B2=E3=C9=F1=BE=AD=D4=AA=D6=AE=BC=E4=B5=C4=C1=AC=BD=D3=
=C7=BF=B6=C8, =
=B8=F7=B2=E3=C9=F1=BE=AD=D4=AA=B5=C4=B4=AB=B5=DD=BA=AF=CA=FD</SPAN></P>
<P><B><SPAN =
lang=3DEN-US>1=A3=A9.=C8=CB=B9=A4=B3=F5=CA=BC=BB=AF</SPAN></B><SPAN> =
=C8=E7=CF=C2=C0=FD</SPAN></P>
<P><SPAN>=C0=FD</SPAN><SPAN =
lang=3DEN-US>1.</SPAN><SPAN>=D3=D0=D2=BB=B8=F6=C8=FD=CA=E4=C8=EB=C1=BD=B2=
=E3=C9=F1=BE=AD=CD=F8=C2=E7</SPAN><SPAN=20
lang=3DEN-US>,</SPAN><SPAN>=D2=FE=B2=E3=D3=D0=C1=BD=B8=F6=B6=D4=CA=FD</SP=
AN><SPAN=20
lang=3DEN-US>S</SPAN><SPAN>=D0=CE=C9=F1=BE=AD=D4=AA</SPAN><SPAN =
lang=3DEN-US>,</SPAN><SPAN>=CA=E4=B3=F6=B2=E3=D3=D0=D2=BB=B8=F6=D5=FD=C7=D0=
<SPAN=20
lang=3DEN-US>S=D0=CE=C9=F1=BE=AD=D4=AA,=D3=C3=D3=DA=D4=A4=B2=E2=C1=BD=B8=F6=
=D2=BB=D4=AA=C4=BF=B1=EA=CA=B8=C1=BF.</SPAN></P>
<P><SPAN lang=3DEN-US>p=3D[0 0.5 -0.2;1 0.2 =
0.3]';%=CA=E4=C8=EB</SPAN></P>
<P><SPAN =
lang=3DEN-US>t=3D[0.5,-0.5];%=C0=ED=CF=EB=CA=E4=B3=F6</SPAN></P>
<P><SPAN =
lang=3DEN-US>r=3D3;s1=3D2;s2=3D1;%</SPAN><SPAN>=CA=E4=C8=EB=B2=E3=A1=A2=D2=
=FE=B2=E3=A1=A2=CA=E4=B3=F6=B2=E3=B5=C4=C9=F1=BE=AD=D4=AA=B8=F6=CA=FD</SP=
AN></P>
<P><SPAN =
lang=3DEN-US>w1=3Drands(s1,r);=A3=A5=CA=E4=C8=EB=B2=E3=B5=BD=D2=FE=B2=E3=B5=
=C4=C1=AC=BD=D3=C7=BF=B6=C8</SPAN></P>
<P><SPAN lang=3DEN-US>b1=3Drands(s1,1); =
=A3=A5=D2=FE=B2=E3=B5=C4=E3=D0=D6=B5</SPAN></P>
<P><SPAN lang=3DEN-US>w2=3Drands(s2,s1); =
=A3=A5=D2=FE=B2=E3=B5=BD=CA=E4=B3=F6=B2=E3=B5=C4=C1=AC=BD=D3=C7=BF=B6=C8<=
/SPAN></P>
<P><SPAN =
lang=3DEN-US>b2=3Drands(s2,1);=A3=A5=CA=E4=B3=F6=B2=E3=B5=C4=E3=D0=D6=B5<=
/SPAN></P>
<P><SPAN lang=3DEN-US>lr=3D1;=A3=A5=D1=A7=CF=B0=CB=D9=C2=CA</SPAN></P>
<P><SPAN lang=3DEN-US>for epoch=3D1:40<SPAN> =20
</SPAN>=A3=A5=D1=B5=C1=B7=CD=F8=C2=E740=B4=CE</SPAN></P>
<P><SPAN lang=3DEN-US><SPAN> =20
</SPAN>a1=3Dlogsig(w1*p,b1);<SPAN> =20
</SPAN>=A3=A5=D2=FE=B2=E3=B5=C4=CA=E4=B3=F6</SPAN></P>
<P><SPAN lang=3DEN-US><SPAN> =
</SPAN>a2=3Dtansig(w2*a1,b2);<SPAN>=20
</SPAN><SPAN> =
</SPAN>=A3=A5=CA=E4=B3=F6=B2=E3=B5=C4=CA=E4=B3=F6</SPAN></P>
<P><SPAN lang=3DEN-US><SPAN> =20
</SPAN>e=3Dt-a2;<SPAN> &nb=
sp; =20
</SPAN>=A3=A5=D3=EB=C0=ED=CF=EB=CA=E4=B3=F6=B5=C4=CE=F3=B2=EE</SPAN></P>
<P><SPAN lang=3DEN-US><SPAN> =20
</SPAN>d2=3Ddeltatan(a2,e);<SPAN> =20
</SPAN>=A3=A5=CA=E4=B3=F6=B2=E3=B5=C4=A6=C4=D6=B5</SPAN></P>
<P><SPAN lang=3DEN-US><SPAN> =20
</SPAN>d1=3Ddeltalog(a1,d2,w2);<SPAN> =
</SPAN>=A3=A5=D2=FE=B2=E3=B5=C4=A6=C4=D6=B5</SPAN></P>
<P><SPAN lang=3DEN-US><SPAN> =
</SPAN>[dw1,db1]=3Dlearnbp(p,d1,lr);<SPAN>=20
</SPAN>=A3=A5=BD=F8=D0=D0=D1=A7=CF=B0=A3=AC=BB=F1=C8=A1=D2=FE=B2=E3=C1=AC=
=BD=D3=C7=BF=B6=C8=A1=A2=E3=D0=D6=B5=B5=C4=B5=F7=D5=FB=D6=B5</SPAN></P>
<P><SPAN lang=3DEN-US><SPAN> =20
</SPAN>w1=3Dw1+dw1;<SPAN> =
=20
</SPAN>=A3=A5=B5=F7=D5=FB=D2=FE=B2=E3=B5=C4=C1=AC=BD=D3=C7=BF=B6=C8</SPAN=
></P>
<P><SPAN lang=3DEN-US><SPAN> =20
</SPAN>b1=3Db1+db1;<SPAN> =
=20
</SPAN>=A3=A5=B5=F7=D5=FB=D2=FE=B2=E3=B5=C4=E3=D0=D6=B5</SPAN></P>
<P><SPAN lang=3DEN-US><SPAN> =20
</SPAN>[dw2,db2]=3Dlearnbp(a1,d2,lr);<SPAN> =20
</SPAN>=A3=A5=BD=F8=D0=D0=D1=A7=CF=B0=A3=AC=BB=F1=C8=A1=CA=E4=B3=F6=B2=E3=
=C1=AC=BD=D3=C7=BF=B6=C8=A1=A2=E3=D0=D6=B5=B5=C4=B5=F7=D5=FB=D6=B5</SPAN>=
</P>
<P><SPAN lang=3DEN-US><SPAN> =20
</SPAN>w2=3Dw2+dw2;<SPAN> =
=20
</SPAN>=A3=A5=B5=F7=D5=FB=CA=E4=B3=F6=B2=E3=B5=C4=C1=AC=BD=D3=C7=BF=B6=C8=
</SPAN></P>
<P><SPAN lang=3DEN-US><SPAN> =20
</SPAN>b2=3Db2+db2;<SPAN> =
=20
</SPAN>=A3=A5=B5=F7=D5=FB=CA=E4=B3=F6=B2=E3=E3=D0=D6=B5</SPAN></P>
<P><SPAN lang=3DEN-US>end;</SPAN></P>
<P><SPAN lang=3DEN-US>a1=3Dlogsig(w1*p,b1);<SPAN> =20
</SPAN>=A3=A5=D1=A7=CF=B0=BA=F3=A3=AC=B6=D4=CD=F8=C2=E7=BD=F8=D0=D0=D1=E9=
=D6=A4</SPAN></P>
<P><SPAN lang=3DEN-US>a2=3Dtansig(w2*a1,b2)</SPAN></P>
<H3><SPAN =
lang=3DEN-US>2)=A3=AE=B5=F7=D3=C3=CF=B5=CD=B3=CC=E1=B9=A9=B5=C4=BA=AF=CA=FD=
</SPAN></H3>
<P><SPAN lang=3DEN-US>Ø<SPAN> =
</SPAN><SPAN>=B8=F1=CA=BD=A3=BA<SPAN=20
lang=3DEN-US><SPAN> =
</SPAN>[w1,b1,w2,b2]=3Dinitff(p,s1,f1,s2,f2)</SPAN></P>
<P><SPAN lang=3DEN-US><SPAN> </SPAN><SPAN> =20
</SPAN>[w1,b1,w2,b2]=3Dinitff(p,s1,f1,t,f2)</SPAN></P>
<P><SPAN lang=3DEN-US>Ø<SPAN> =
</SPAN><SPAN>=B9=A6=C4=DC=A3=BA=D6=C1=B6=E0=C8=FD=B2=E3=B5=C4<SPAN=20
lang=3DEN-US>BP=CD=F8=C2=E7=B3=F5=CA=BC=BB=AF=A3=AC=B5=C3=B5=BD=C3=BF=B2=E3=
=B5=C4=C8=A8=D6=B5=BA=CD=E3=D0=D6=B5=A1=A3</SPAN></P>
<P><SPAN lang=3DEN-US>Ø<SPAN> =
</SPAN><SPAN>=CB=B5=C3=F7=A3=BA<SPAN=20
lang=3DEN-US><SPAN> =20
</SPAN>1=A3=A9P=CE=AA=CA=E4=C8=EB=CF=F2=C1=BF=A3=ACP=D6=D0=C3=BF=D2=BB=D0=
=D0=B1=D8=D0=EB=B0=FC=BA=AC=CD=F8=C2=E7=C6=DA=CD=FB=CA=E4=C8=EB=B5=C4=D7=EE=
=B4=F3=D6=B5=BA=CD=D7=EE=D0=A1=D6=B5=A3=AC=D5=E2=D1=F9=B2=C5=C4=DC=BA=CF=C0=
=ED=B5=D8=B3=F5=CA=BC=BB=AF=C1=AC=BD=D3=C7=BF=B6=C8=D3=EB=E3=D0=D6=B5=A1=A3=
</SPAN></P>
<P><SPAN lang=3DEN-US><SPAN> =
</SPAN>2=A3=A9T=CE=AA=C0=ED=CF=EB=CA=E4=B3=F6=CF=F2=C1=BF</SPAN></P>
<P><SPAN lang=3DEN-US><SPAN> =20
</SPAN>3=A3=A9S1=CE=AA=D2=FE=B2=E3=B5=C4=C9=F1=BE=AD=D4=AA=CA=FD=A3=ACS2=CE=
=AA=CA=E4=B3=F6=B2=E3=B5=C4=C9=F1=BE=AD=D4=AA=CA=FD=A3=AC=BF=C9=D3=C3=C0=ED=
=CF=EB=CA=E4=B3=F6=CF=F2=C1=BFT=B4=FA=CC=E6S2=A3=AC=B4=CB=CA=B1S2=A3=BDT=CF=
=F2=C1=BF=B5=C4=D0=D0=CA=FD</SPAN></P>
<P><SPAN lang=3DEN-US><SPAN> =20
</SPAN>4=A3=A9F1=CE=AA=D2=FE=B2=E3=B4=AB=B5=DD=BA=AF=CA=FD=C3=FB=A3=ACF2=CE=
=AA=CA=E4=B3=F6=B2=E3=B4=AB=B5=DD=BA=AF=CA=FD=C3=FB</SPAN></P>
<P><SPAN lang=3DEN-US>=C0=FD2<SPAN> </SPAN><SPAN=20
lang=3DEN-US><SPAN> </SPAN>=D3=A6=D3=C3=C1=BD=B2=E3BP=CD=F8=C2=
=E7=BD=F8=D0=D0=BA=AF=CA=FD=B1=C6=BD=FC=A3=AC=C6=E4=D6=D0=D2=FE=B2=E3=C9=F1=
=BE=AD=D4=AA=B8=F6=CA=FD=C9=E8=CE=AA5=B8=F6</SPAN></P>
<P><SPAN lang=3DEN-US>clf reset;</SPAN></P>
<P><SPAN lang=3DEN-US>figure(gcf)</SPAN></P>
<P><SPAN lang=3DEN-US>colordef(gcf,'none')</SPAN></P>
<P><SPAN lang=3DEN-US>setfsize(500,200);</SPAN></P>
<P><SPAN lang=3DEN-US>echo on</SPAN></P>
<P><SPAN lang=3DEN-US>clc</SPAN></P>
<P><SPAN lang=3DEN-US>%INITFF<SPAN> </SPAN>- Initializes a=20
feed-forware network.</SPAN></P>
<P><SPAN lang=3DEN-US>%TRAINBP <SPAN> </SPAN><SPAN lang=3DEN-US>- =
Trains a=20
feed-forward network with backpropagation.</SPAN></P>
<P><SPAN lang=3DEN-US>% SIMUFF<SPAN> </SPAN>- =
Simulates a=20
feed-forward network.</SPAN></P>
<P><SPAN lang=3DEN-US>% FUNCTION APPROXIMATION WITH TANSIG/PURELIN=20
NETWORK:</SPAN></P>
<P><SPAN lang=3DEN-US>%Using the above functions two-layer network is=20
trained</SPAN></P>
<P><SPAN lang=3DEN-US>%to respond to specific inputs with target=20
outputs.</SPAN></P>
<P><SPAN lang=3DEN-US>%<SPAN> </SPAN>DEFINING A VECTOR =
ASSOCATION PROBLEM</SPAN></P>
<P><SPAN lang=3DEN-US>%<SPAN> =20
</SPAN>=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D</SPAN></P>
<P><SPAN lang=3DEN-US>%</SPAN><SPAN lang=3DEN-US>P defines twenty-one =
1-element=20
input vectors (column vectors):</SPAN></P>
<P><SPAN lang=3DEN-US>P =3D -1:.1:1;</SPAN></P>
<P><SPAN lang=3DEN-US>%<SPAN> </SPAN>T defines the =
associated=20
1-element targets (column vectors):</SPAN></P>
<P><SPAN lang=3DEN-US>T=3D[</SPAN><SPAN lang=3DEN-US>-.9602 -.5770 =
-.0729<SPAN> =20
</SPAN>.3771<SPAN> </SPAN>.6405<SPAN> =
</SPAN>.6600<SPAN> =20
</SPAN>.4609 ...</SPAN></P>
<P><SPAN lang=3DEN-US><SPAN> </SPAN>.1336 =
-.2013=20
-.4344 -.5000 -.3930 -.1647<SPAN> </SPAN>.0988 ...</SPAN></P>
<P><SPAN lang=3DEN-US><SPAN> =20
</SPAN>.3072<SPAN> </SPAN>.3960<SPAN> =
</SPAN>.3449<SPAN> =20
</SPAN>.1816 -.0312 -.2189 -.3201];</SPAN></P>
<P><SPAN lang=3DEN-US>%<SPAN> </SPAN>PLOTTING THE DATA =
POINTS</SPAN></P>
<P><SPAN lang=3DEN-US>%<SPAN> =20
</SPAN>=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D</SPAN></P>
<P><SPAN lang=3DEN-US>%<SPAN> </SPAN>Here the data =
points are=20
plotted:</SPAN></P>
?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -