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New posts in matrix
Is there an efficient way to extract a slice of a 3d array?
Mar 12, 2026
r
arrays
performance
matrix
indexing
Dot-multiplying large dense matrices of different dtype (float x boolean)
Mar 11, 2026
python
numpy
matrix
type-conversion
sparse-matrix
Quickly calculate the number of shared neighbor between any pair of nodes from an adjacency matrix
Mar 12, 2026
r
matrix
igraph
adjacency-matrix
Writing a Householder QR factorization function in R code
Mar 11, 2026
r
matrix
qr-decomposition
Efficiently replicate matrix rows by group in R
Mar 12, 2026
r
performance
matrix
replication
(C++) Fastest way possible for reading in matrix files (arbitrary size)
Mar 12, 2026
c++
matrix
nanmean of matrix columns in NumPy
Mar 11, 2026
python
numpy
matrix
Save n matrix in loop R
Mar 10, 2026
r
loops
matrix
Neon 4x4 transpose
Mar 11, 2026
assembly
matrix
arm
transpose
Efficiently enumerate all possible matrices with given constraints
Mar 11, 2026
r
algorithm
performance
matrix
igraph
Matlab: multiplying rows of a matrix by vector elements
Mar 10, 2026
matlab
matrix
vectorization
bsxfun
R - change matrix values based on another matrix indices
Mar 11, 2026
r
matrix
Matrix Calculation that Matches Numbers Contained within the Row and Column Names
Mar 10, 2026
r
matrix
Neighbors in a 2D array python
Mar 10, 2026
python
arrays
algorithm
numpy
matrix
Get the indexes of the boundary cells of a subset of a matrix. Matlab
Mar 10, 2026
matlab
matrix
octave
subset
boundary
Why is it necessary pass the number of columns as a function argument?
Mar 08, 2026
c
function
gcc
matrix
parameters
Matlab: Adding 'convolving' row and colum to make a square matrix of each element combination?
Mar 09, 2026
arrays
matlab
matrix
In R, is there a tabular data structure that can have more than 2^31 cells and to which `apply` can be applied?
Mar 10, 2026
r
matrix
apply
Changing nonzeros in certain columns of a sparse matrix
Mar 09, 2026
arrays
matlab
matrix
sparse-matrix
Determinant of a (large) 1554 x 1554 matrix in Python
Mar 10, 2026
python
numpy
matrix
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