matlab神經(jīng)網(wǎng)絡(luò)30個(gè)案例分析源代碼demochapter

遺傳算法的優(yōu)化計(jì)算——輸入自變量降該案例作者申明 案例為案例，請(qǐng)注明出處（《神經(jīng)網(wǎng)絡(luò)30個(gè)案例分析》）。5：若此案例碰巧與您的研究有關(guān)聯(lián)，我們提意見，要求等，我們考慮后可以加在案例里仿真測(cè)試單BP訓(xùn)練優(yōu)化BP仿真測(cè)試優(yōu)化BP結(jié)果顯示（優(yōu)化BP網(wǎng)絡(luò)clearclearallwarningglobalglobalP_trainT_trainP_testT_testmintmaxtSs1S=30;s1=loadloada=Train=Test=%訓(xùn)練P_train=Train(:,3:end)';T_train=Train(:,2)';%測(cè)試P_test=T_test=%顯示實(shí)驗(yàn)total_Blength(find(data(:,21));total_Mlength(find(data(:,22));count_B=length(find(T_train==1));count_M=length(find(T_train==2));number_B=length(find(T_test==1));number_M=length(find(T_test==2));disp([disp(['病例總數(shù)：''良性：num2str(total_B)...'惡性：'disp(['訓(xùn)練集病例總數(shù)：num2str(500)...'良性：'num2str(count_B)...'惡性：'num2str(count_M)]);disp(['測(cè)試集病例總數(shù)：num2str(69)...'良性：num2str(number_B)...'惡性：num2str(number_M)]);病例總數(shù)：569良性：357訓(xùn)練集病例總數(shù)：500良性：311惡性：189測(cè)試集病例總數(shù)：69良性：46惡性：23[P_train,minp,maxp,T_train,mint,maxt][P_train,minp,maxp,T_train,mint,maxt]=premnmx(P_train,T_train);P_test=tramnmx(P_test,minp,maxp);創(chuàng)建單BPtt=net_bp=%設(shè)置訓(xùn)練net_bp.trainParam.epochs=net_bp.trainParam.show=net_bp.trainParam.goal=net_bp.trainParam.lr=net_bp.trainParam.showwindow=訓(xùn)練單BPnet_bpnet_bp=仿真測(cè)試單BP網(wǎng)絡(luò)tn_bp_simtn_bp_sim=%反歸T_bp_sim=postmnmx(tn_bp_sim,mint,maxt);e=cputime-t;T_bp_sim(T_bp_sim>1.5)=T_bp_sim(T_bp_sim<1.5)=1;result_bp=[T_bp_sim'T_test'];結(jié)果顯示（單BP網(wǎng)絡(luò)number_B_simnumber_B_simlength(find(T_bp_sim1&T_test1));number_M_sim=length(find(T_bp_sim==2&T_test==2));disp(['良性乳腺腫瘤確診：''誤診：'num2str(number_B-'確診率p1num2str(number_B_sim/number_B*100'%']);disp(['惡性乳腺腫瘤確診：'num2str(number_M_sim)...'誤診：'num2str(number_M-'確診率p2num2str(number_M_sim/number_M*100'%']);disp(['建模時(shí)間為：'num2str(e)'s']);BP網(wǎng)絡(luò)的為良性乳腺腫瘤確診：46誤診：0確診率p1=惡性乳腺腫瘤確診：19誤診：4確診率p2=popupopu=bounds=%initPop=randint(popu,S,[0%計(jì)算初始種群適應(yīng)度initFit=zeros(popu,1);fori1:size(initPop,1)initFit(i)=initPop=[initPopinitFit];gen=100;%[X,EndPop,BPop,Trace]=ga(bounds,'fitness',[],initPop,[1e-610],'maxGenTerm',...gen,'normGeomSelect',0.09,'simpleXover',2,'boundaryMutation',[2gen3]);[m,n]=find(X==disp(['優(yōu)化篩選后的輸入自變量編號(hào)為:'%holdonxlim([1gen])優(yōu)化篩選后的輸入自變量編號(hào)為 9101316172021262829新訓(xùn)練集/p_trainp_train=zeros(size(n,2),size(T_train,2));p_test=zeros(size(n,2),size(T_test,2));fori=1:length(n)p_train(i,:)=p_test(i,:)=t_train=創(chuàng)建優(yōu)化BPtt=net_ga=%訓(xùn)練參數(shù)net_ga.trainParam.epochs=net_ga.trainParam.show=net_ga.trainParam.goal=net_ga.trainParam.lr=net_ga.trainParam.showwindow=訓(xùn)練優(yōu)化BPnet_ganet_ga=仿真測(cè)試優(yōu)化BPtn_ga_simtn_ga_sim=%反歸T_ga_sim=postmnmx(tn_ga_sim,mint,maxt);e=cputime-t;T_ga_sim(T_ga_sim>1.5)=T_ga_sim(T_ga_sim<1.5)=1;result_ga=[T_ga_sim'T_test'];結(jié)果顯示（優(yōu)化BP網(wǎng)絡(luò)number_b_simnumber_b_sim=length(find(T_ga_sim==1&T_test==1));number_m_sim=length(find(T_ga_sim==2&T_test==2)); disp(['良性乳腺腫瘤確診：''誤診：'num2str(number_B-'確診率p1=num2str(number_b_sim/number_B*100'%']);disp(['惡性乳腺腫瘤確診：'num2str(number_m_sim)...'誤診：'num2str(number_M-'確診率p2=num2st