sparse-matrix
boost compressed matrix basics
I am confused on how the boost::compressed_matrix works. Suppose I declare the compressed_matrix like this:[详细]
2023-01-16 21:55 分类：问答boost compressed matrix storage
The boost ublas::compressed_matrix should only allocate space for non-zero elements. But in the below example, I am getting strange results.[详细]
2023-01-16 16:28 分类：问答Efficient way to create a diagonal sparse matrix
I have the following code in Python using Numpy: p = np.diag(1.0 / np.array(x)) How can I transform it to get the sparse matrix p2 with the same values as开发者_如何转开发 p without creating p firs[详细]
2023-01-15 15:44 分类：问答Java Matrix processing time
I need sim开发者_JAVA技巧ple opinion from all Guru! I developed a program to do some matrix calculations. It work all fine with[详细]
2023-01-13 04:59 分类：问答Sparse array support in HDF5
I need to store a 512^3 array on disk in some way and I\'m currently using HDF5. Since the array is sparse a lot of d开发者_如何学Pythonisk space gets wasted.[详细]
2023-01-13 03:54 分类：问答Is there any effective implement of the solution for sparse matrix linear equation using CUDA?
Is the开发者_StackOverflow中文版re any effective implement of the solution for sparse matrix linear equation using CUDA?With the new 3.2 Toolkit (I think it\'s being released on 2010-09-22, though the[详细]
2023-01-12 22:38 分类：问答Visiting all entries of Sparse Matrix in the org.apache.commons.math.linear package
I see 2 implementations of sparse matrix in this package. OpenMapRealMatrix SparseFieldMatrix Both are documented as \"Sparse matrix implementation based on an open addressed map\".[详细]
2023-01-12 08:11 分类：问答Records with extra properties: sparse table or EAV?
I have a model that already has a couple dozen of columns that will be filled most of the time. Now I need to add fields that might be different each time.[详细]
2023-01-11 09:21 分类：问答Sparse Matrix Multiplication on GPU or CPU?
What do you think? What would be faster and how much faster: Doing sparse matrix (CSR) multiplication (with a vector) on the GPU or the CPU开发者_运维知识库 (multithreaded)?It depends upon the size of[详细]
2023-01-10 15:02 分类：问答Writing binary data to middle of a sparse file
I need to compile a binary file in pieces with pieces arriving in random order (yes, its a P2P project)[详细]
2023-01-10 10:07 分类：问答
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