Top "Sparse-matrix" questions

A sparse matrix is a data structure in which not every entry is explicitly represented.

sparse matrix library for C++

Is there any sparse matrix library that can do these: solve linear algebraic equations support operations like matrix-matrix/number multiplication/…

matrix sparse-matrix numerical-methods numerical-analysis
Dot product sparse matrices

I have two sparse matrices (a and b) in python of the following dimensions: a = <240760x2177930 sparse matrix of …

python python-3.x numpy sparse-matrix dot-product
Add column to a sparse matrix

When I execute the following code I get a spares matrix: import numpy as np from scipy.sparse import csr_…

python python-3.x numpy scipy sparse-matrix
How to convert sparse matrix to dense matrix in Eigen

Is there some easy and fast way to convert a sparse matrix to a dense matrix of doubles? Because my …

c++ matrix sparse-matrix eigen
Scipy.sparse.csr_matrix: How to get top ten values and indices?

I have a large csr_matrix and I am interested in the top ten values and their indices each row. …

python scipy sparse-matrix
Fortran 90/95 library for sparse matrices?

I am looking for a library for dealing with sparse matrices in fortran 90/95. I only need very basic operations like …

fortran sparse-matrix fortran90 blas fortran95
R: sparse matrix conversion

I have a matrix of factors in R and want to convert it to a matrix of dummy variables 0-1 …

r sparse-matrix
Mongodb unique sparse index

I have created a sparse and unique index on my mongodb collection. var Account = new Schema({ email: { type: String, index: {…

mongodb indexing mongoose unique sparse-matrix
Determining the byte size of a scipy.sparse matrix?

Is it possible to determine the byte size of a scipy.sparse matrix? In NumPy you can determine the size …

python scipy sparse-matrix
large-scale regression in R with a sparse feature matrix

I'd like to do large-scale regression (linear/logistic) in R with many (e.g. 100k) features, where each example is …

r sparse-matrix regression