Question

Intuition of $D\leftarrow XC^{T}\text{diag}(C1_n)^{-1}$ update rule in matrix factorization

score 137 · Answer 1 · 2026-03-25 04:41:14

137

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Intuition of $D\leftarrow XC^{T}\text{diag}(C1_n)^{-1}$ update rule in matrix factorization

Published on 25 Mar 2026 - 4:41

score 57 · Answer 2 · 2026-03-25 10:54:19

57

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The proof for the Euler decomposition of the VaR

Published on 25 Mar 2026 - 10:54

score 40 · Answer 3 · 2023-03-20 13:34:40

40

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Matrix series question

Published on 20 Mar 2023 - 13:34

score 116 · Answer 4 · 2023-03-20 21:31:34

116

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If A and B are positive semidefinite matrices, then $\mathrm{tr}( A^3B + AB^3)\ge 2\mathrm{tr}( A^2B^2)$.

Published on 20 Mar 2023 - 21:31

score 32 · Answer 5 · 2023-03-22 15:56:48

How are a matrix, a result matrix of a couple of matrix multiplies, the inverse of that matrix, and doing the matrix multiplies backwards connected?

score 57 · Answer 6 · 2026-03-25 19:58:59

57

Views

Best inverse / minimization solution of ill conditioned matrix and underdetermined system

Published on 25 Mar 2026 - 19:58

score 110 · Answer 7 · 2023-03-28 15:16:12

110

Views

Square root of PSD matrix and unitary freedom

Published on 28 Mar 2023 - 15:16

score 33 · Answer 8 · 2026-03-27 13:47:18

33

Views

If the symmetric part of a matrix is PSD then the matrix is PSD

Published on 27 Mar 2026 - 13:47

score 58 · Answer 9 · 2023-03-29 14:25:06

58

Views

The matrix inverse of $\begin{pmatrix} a_{11} 10^{10}& a_{12} 10^{30} \newline a_{21} 10^{20}& a_{22} 10^{40} \end{pmatrix} $ and an algebra?

Published on 29 Mar 2023 - 14:25

score 410 · Answer 10 · 2026-03-28 08:50:03

410

Views

If $M\in M_{m \times n}(\mathbb{R})$ is a rank $r \geq 1$ matrix then it can be written as a sum of exactly $r$ rank 1 matrices

Published on 28 Mar 2026 - 8:50

score 34 · Answer 11 · 2023-04-03 08:23:53

34

Views

How to decomposition a Hermitian matrix subtracted from Identity?

Published on 03 Apr 2023 - 8:23

score 66 · Answer 12 · 2023-04-05 10:39:36

66

Views

Matrix Decomposition as $M=AA^\intercal$

Published on 05 Apr 2023 - 10:39

score 54 · Answer 13 · 2026-03-28 08:47:52

54

Views

Fast algorithm for incremental randomized SVD

Published on 28 Mar 2026 - 8:47

score 33 · Answer 14 · 2026-03-28 08:48:15

33

Views

Eigenvalue decompositin equal to singular value decomposition

Published on 28 Mar 2026 - 8:48

score 81 · Answer 15 · 2026-03-25 01:14:52

81

Views

Any quantitative methods of eigenvalues and matrix compression?

Published on 25 Mar 2026 - 1:14

List Question

Intuition of $D\leftarrow XC^{T}\text{diag}(C1_n)^{-1}$ update rule in matrix factorization

The proof for the Euler decomposition of the VaR

Matrix series question

If A and B are positive semidefinite matrices, then $\mathrm{tr}( A^3B + AB^3)\ge 2\mathrm{tr}( A^2B^2)$.

How are a matrix, a result matrix of a couple of matrix multiplies, the inverse of that matrix, and doing the matrix multiplies backwards connected?

Best inverse / minimization solution of ill conditioned matrix and underdetermined system

Square root of PSD matrix and unitary freedom

If the symmetric part of a matrix is PSD then the matrix is PSD

The matrix inverse of $\begin{pmatrix} a_{11} 10^{10}& a_{12} 10^{30} \newline a_{21} 10^{20}& a_{22} 10^{40} \end{pmatrix} $ and an algebra?

If $M\in M_{m \times n}(\mathbb{R})$ is a rank $r \geq 1$ matrix then it can be written as a sum of exactly $r$ rank 1 matrices

How to decomposition a Hermitian matrix subtracted from Identity?

Matrix Decomposition as $M=AA^\intercal$

Fast algorithm for incremental randomized SVD

Eigenvalue decompositin equal to singular value decomposition

Any quantitative methods of eigenvalues and matrix compression?

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