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New posts in matrix
Compressed Sparse Row Transpose
Sep 22, 2025
matrix
compression
row
sparse-matrix
transpose
Subtract all vector pairs
Sep 22, 2025
r
matrix
bigdata
R - Corrplot() correlation matrix has question marks in the grid. How to understand the matrix?
Sep 21, 2025
r
matrix
plot
correlation
r-corrplot
Matrix inversion or Cholesky?
Sep 21, 2025
math
matrix
matrix-inverse
Scala Breeze Cartesian product of vectors
Sep 21, 2025
scala
matrix
scala-breeze
built-in matrices _Object2World, UNITY_MATRIX_MVP... row-major or column-major?
Sep 21, 2025
matrix
unity-game-engine
shader
Convert position confidence ellipse to covariance matrix
Sep 20, 2025
matrix
ellipse
uncertainty
Octave - out of memory or dimension too large for Octave's index type
Sep 20, 2025
windows
matrix
memory
out-of-memory
octave
NumPy - Sum of the elements on the secondary diagnoal of a 2D matrix
Sep 19, 2025
python
numpy
matrix
diagonal
Counting sub matrix with all prime numbers
Sep 20, 2025
java
algorithm
matrix
dynamic-programming
How to replace NAs based on preceding and following numbers are zero
Sep 18, 2025
r
matrix
na
error: sigma must be positive definite
Sep 20, 2025
r
matrix
What's wrong with Strassen's method to compute square of a matrix?
Sep 18, 2025
algorithm
matrix
strassen
In R how would you replace values in a matrix that have a certain condition with values from another vector?
Sep 18, 2025
r
matrix
vector
Numpy: create a matrix from a cartesian product of two vectors (or one with itself) while applying a function to all pairs
Sep 17, 2025
python
numpy
matrix
Why matrices are [rows, columns] and not [columns, rows]?
Sep 17, 2025
math
matrix
conventions
notation
Biggest non-contiguous submatrix with all ones
Sep 18, 2025
algorithm
matrix
optimization
boolean
linear-programming
Filling matrices with NA to meet desired dimensions
Sep 17, 2025
r
list
matrix
How to check if all rows of a matrix are equal [duplicate]
Sep 17, 2025
matlab
matrix
vectorization
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