基于模糊神经网络的嘉陵江水质预测

部分实验代码

 %输入层
        x=inputn(:,k);
        
        %输入层结算
        for i=1:I
            for j=1:M
                u(i,j)=exp(-(x(i)-c(j,i))^2/b(j,i));
            end
        end
        
        %模糊规则计算
        for i=1:M
            w(i)=u(1,i)*u(2,i)*u(3,i)*u(4,i)*u(5,i)*u(6,i);
        end    
        addw=sum(w);
        
        for i=1:M
            yi(i)=p0_1(i)+p1_1(i)*x(1)+p2_1(i)*x(2)+p3_1(i)*x(3)+p4_1(i)*x(4)+p5_1(i)*x(5)+p6_1(i)*x(6);
        end
        
        addyw=yi*w';
        %输出及误差函数计算
        yn(k)=addyw/addw;
        e(k)=outputn(k)-yn(k);
        
        %计算p的变化值
        d_p=zeros(M,1);
        d_p=xite*e(k)*w./addw;
        d_p=d_p';
        
        %计算b变化值
        d_b=0*b_1;
        for i=1:M
            for j=1:I
                d_b(i,j)=xite*e(k)*(yi(i)*addw-addyw)*(x(j)-c(i,j))^2*w(i)/(b(i,j)^2*addw^2);
            end
        end  
        
        %更新c变化值
        for i=1:M
            for j=1:I
                d_c(i,j)=xite*e(k)*(yi(i)*addw-addyw)*2*(x(j)-c(i,j))*w(i)/(b(i,j)*addw^2);
            end
        end

数据集采用的是水质检测的六个指标

其输出如下