vector spaces - What is the mathematical meaning of $xx^T ...
2014年10月28日 · Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
linear algebra - A square matrix (XX^T) made from column vector …
2021年5月22日 · Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
matrices - Show that $\det(I-xx{^T})=0$ if $x{^T}x=1
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Relation between eigenvectors of matrix $X^TX$ and $XX^T$
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Finding the covariance of $X$ from $XX^T$ and from its mean.
2019年6月27日 · Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
What are the eigenvalues of $X = xx^{T}, x\\in\\mathbb{R}^{d}$?
2019年8月13日 · Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Eigenvectors and eigenvalues from $X^TX$ to $XX^T$?
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linear algebra - Eigenvalue decomposition of $A = I - xx^T ...
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Differentiation of $xx^T$ where $x$ is a vector
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Expected value of $xx^{T}$ for multidimensional Gaussian
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