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如何生成M这样的矩阵cov(M) = I(身份)。我使用matlab生成M。
M
cov(M) = I
如果M由列组成m1,m2,...mN,x1=(m1-mean(m1))/sqrt(N-1)然后cov(M)=X'*X
m1,m2,...mN
x1=(m1-mean(m1))/sqrt(N-1)
cov(M)=X'*X
这意味着cov(M)=IiffX是一个正交矩阵。你可以利用这个事实来设计X,然后用你的方式回到一个M
cov(M)=I
X