sparse-matrix

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Matlab: a smart way to create a sparse matrix

I have to create a matlab matrix that is much bigger that my phisical memory, and i want to take advantage of the sparsity.[详细]

2023-03-08 17:43 分类：问答
Mex sparse matrix

I created a sparse matrix in MEX using mxCreateSparse. mxArray *W; W=mxCreateSparse(n*n,n*n,xsize,mxREAL);开发者_运维百科[详细]

2023-03-08 01:06 分类：问答
How to re-create a matrix from indices and values froma text file in matlab

I wish to do the following in matlab: -I have a text file with the following format: 110.242 120.332 ...[详细]

2023-03-07 08:00 分类：问答
Sparse matrix-vector multiplication in CUDA

I\'m trying to implement a matrix-vector Multiplication on GPU (using CUDA). In my C++ code (CPU), I load the matrix as a dense matrix, and then I perform the matrix-vector multiplication using CUDA.[详细]

2023-03-05 09:50 分类：问答
pseudo inverse of sparse matrix in python

I am working with data from neuroimaging and because of the large amount of data, I would like to use sparse matrices for my code (scipy.sparse.lil_matrix or csr_matrix).[详细]

2023-03-02 12:20 分类：问答
Sparse matrix conversion in C

I\'m trying to develop a program in C to convert a sparse matrix file into a dense matrix. From what I\'ve read, the best approach would be the开发者_运维问答 use of linked lists but I have no experie[详细]

2023-03-01 15:07 分类：问答
Sparse matrices in SciPy defined by a function

Is it possible to define a sparse matrix in scipy from a function rather than the laying out all the possible values? In the doc\'s I see that a sparse matrix can be created by[详细]

2023-03-01 10:57 分类：问答
Computing sparse pairwise distance matrix in R

I have a NxM matrix and I want to compute the NxN matrix of Euclidean distances between the M points.In my problem, N is about 100,000.As I plan to use this matrix for a k-nearest neighbor algorithm,[详细]

2023-02-22 14:12 分类：问答
linked representation of sparse matrices

for sparse matrices i had put a question about its linked representation. there were two lists to be implemented for a nine zero elements of a 5x8 matrix.....one is the coloumn list and another one is[详细]

2023-02-22 04:55 分类：问答
3D sparse matrix implementation?

I\'ve found a qui开发者_运维技巧te good sparse matrix implementation for c# over http://www.blackbeltcoder.com/Articles/algorithms/creating-a-sparse-matrix-in-net.[详细]

2023-02-21 17:34 分类：问答