y=sinx 函数的 CMAC 拟合
要求实现 y=sinx 函数的 CMAC 拟合%%%%%%%%
%%%%%%%%%%%%%%%%%% 初始化
clear
max=50000;%%%%最大循环次数
c=5;%%%%%重复覆盖的区域的内存个数
data=360;%%%%需要输入的数据个数
error=0.00001;%%%误差精确度
alpha=0.3;%%%%调整步长
A=uint8(zeros(data,c));%%%用于存储每个数据所激活的内存空间地址
w=rand(1,80);%%%%初始化权值
%%%%%%%%求出训练数据的预测值%%%%%%%%
for i=1:data
x(i)=i/360*pi;
d(i)=sin(i/360*pi);
end
%%%%%%%%%%%%%hash 编码%%%%%%%%%%%%%%%%%%%%%%
for i=1:c
for j=1:data
temp=0;
for k=1:i-1
temp=ceil(k/c+1)+temp;
end
A(j,i)=temp+(j-i)/c+1;
end
end
for m=1:max
for i=1:data
out=0;
for j=1:c
out=w(A(i,j))+out;
end
y(i)=out;
e(i)=d(i)-y(i);
if(abs(e(i)/d(i))<error)
continue;
else
for k=1:c
w(A(i,k))=w(A(i,k))+alpha/3*e(i);
end
end
