matlab怎么实现基于广义神经网络GRNN网络入侵聚类

%% 清空环境文件

clear

clc

%% 提取攻击数据

%攻击样本数据

load netattack;

P1=netattack;

T1=P1(:,39)';

P1(:,39)=[];

%数据大小

[R1,C1]=size(P1);

csum=20; %提取训练数据多少

%% 模糊聚类

data=P1;

[center,U,obj_fcn] = fcm(data,5);

for i=1:R1

[value,idx]=max(U(:,i));

a1(i)=idx;

end

%% 模糊聚类结果分析

Confusion_Matrix_FCM=zeros(6,6);

Confusion_Matrix_FCM(1,:)=0:5;

Confusion_Matrix_FCM(:,1)=[0:5]';

for nf=1:5

for nc=1:5

Confusion_Matrix_FCM(nf+1,nc+1)=length(find(a1(T1==nf)==nc));

end

end

%% 网络训练样本提取

cent1=P1(a1==1,:);cent1=mean(cent1);

cent2=P1(a1==2,:);cent2=mean(cent2);

cent3=P1(a1==3,:);cent3=mean(cent3);

cent4=P1(a1==4,:);cent4=mean(cent4);

cent5=P1(a1==5,:);cent5=mean(cent5);

%提取范数最小为训练样本

for n=1:R1

ecent1(n)=norm(P1(n,:)-cent1);

ecent2(n)=norm(P1(n,:)-cent2);

ecent3(n)=norm(P1(n,:)-cent3);

ecent4(n)=norm(P1(n,:)-cent4);

ecent5(n)=norm(P1(n,:)-cent5);

end

for n=1:csum

[~, me1]=min(ecent1);

[~, me2]=min(ecent2);

[~, me3]=min(ecent3);

[~, me4]=min(ecent4);

[va, me5]=min(ecent5);

ecnt1(n,:)=P1(me1(1),:);ecent1(me1(1))=[];tcl(n)=1;

ecnt2(n,:)=P1(me2(1),:);ecent2(me2(1))=[];tc2(n)=2;

ecnt3(n,:)=P1(me3(1),:);ecent3(me3(1))=[];tc3(n)=3;

ecnt4(n,:)=P1(me4(1),:);ecent4(me4(1))=[];tc4(n)=4;

ecnt5(n,:)=P1(me5(1),:);ecent5(me5(1))=[];tc5(n)=5;

end

P2=[ecnt1;ecnt2;ecnt3;ecnt4;ecnt5];T2=[tcl,tc2,tc3,tc4,tc5];

k=0;

%% 迭代计算

for nit=1:10%开始迭代

%% 广义神经网络聚类

net = newgrnn(P2',T2,50);

%训练广义网络

a2=sim(net,P1') ;

%预测结果

%输出标准化（根据输出来分类）

a2(a2<=1.5)=1;

a2(a2>1.5&a2<=2.5)=2;

a2(a2>2.5&a2<=3.5)=3;

a2(a2>3.5&a2<=4.5)=4;

a2(a2>4.5)=5;

%% 网络训练数据再次提取

cent1=P1(a2==1,:);cent1=mean(cent1);

cent2=P1(a2==2,:);cent2=mean(cent2);

cent3=P1(a2==3,:);cent3=mean(cent3);

cent4=P1(a2==4,:);cent4=mean(cent4);

cent5=P1(a2==5,:);cent5=mean(cent5);

for n=1:R1%计算样本到各个中心的距离

ecent1(n)=norm(P1(n,:)-cent1);

ecent2(n)=norm(P1(n,:)-cent2);

ecent3(n)=norm(P1(n,:)-cent3);

ecent4(n)=norm(P1(n,:)-cent4);

ecent5(n)=norm(P1(n,:)-cent5);

end

%选择离每类中心最近的csum个样本

for n=1:csum

[~, me1]=min(ecent1);

[~, me2]=min(ecent2);

[~, me3]=min(ecent3);

[~, me4]=min(ecent4);

[va, me5]=min(ecent5);

ecnt1(n,:)=P1(me1(1),:);ecent1(me1(1))=[];tc1(n)=1;

ecnt2(n,:)=P1(me2(1),:);ecent2(me2(1))=[];tc2(n)=2;

ecnt3(n,:)=P1(me3(1),:);ecent3(me3(1))=[];tc3(n)=3;

ecnt4(n,:)=P1(me4(1),:);ecent4(me4(1))=[];tc4(n)=4;

ecnt5(n,:)=P1(me5(1),:);ecent5(me5(1))=[];tc5(n)=5;

end

p2=[ecnt1;ecnt2;ecnt3;ecnt4;ecnt5];

T2=[tc1,tc2,tc3,tc4,tc5];

%统计分类结果

Confusion_Matrix_GRNN=zeros(6,6);

Confusion_Matrix_GRNN(1,:)=0:5;

Confusion_Matrix_GRNN(:,1)=[0:5]';

for nf=1:5

for nc=1:5

Confusion_Matrix_GRNN(nf+1,nc+1)=length(find(a2(T1==nf)==nc));

end

end

pre2=0;

for n=2:6

pre2=pre2+max(Confusion_Matrix_GRNN(n,:));

end

pre2=pre2/R1*100;

end