Questions tagged [matrix]

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Reinforcement learning algorithm: Q-Table

I have been studying RL and started with Q-learning. Q-learning uses a big state x action matrix, where each entry is a possible reward. I use python implementation, and in python, matrix indexing ...
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Software for quadtree-based boolean matrix manipulation on GPGPU

Is there a GPGPU library for quadtree-based sparse boolean matrices processing: multiplication, elementwise addition, etc. Open-source solutions are preferred.
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C++ library for matrix calculations and potential distribution calculations

Good morning everyone. I need to create a matrix. It should be a "map" on which I'll be able to present a distribution of a potential field. After that I want to create a vector field (so calculate a ...
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Is there a tool to convert a flowchart to a matrix of combinations?

Looking for an open source tool to accomplish this goal. Given a flowchart file, I would like to convert the flowchart "data" into a file with a set of action paths to test the system represented by ...
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Render 3D graphic based on x,y,z vertex coordinates

I am looking for a library in C++ to render my 3D object that is consisting out of vertices (x,y,z coordinates). I found a couple of different render libraries, however, most of them don't take a x,...
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Store for number arrays

I am looking for a way to store a sparse, symmetrical n x n matrix. Each cell is by default float32 (I can change it to int8 / int16 / int32 if that improves the situation). I need to get complete ...
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Calculation of Eigenvalues

I hope this is an easy question: can you recommend an online calculator of Eigenvalues accepting variable coefficients of the matrix? I am not able up to now to find one... I would also consider an ...
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1answer
430 views

Sparse matrix library for Java

I am looking for a sparse matrix library in Java that can do multiplications on sparse integer matrices, where the matrices represent the adjacency relations of a graph. The requirement is roughly the ...
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36 views

extended precision sparse matrix solver

I am looking for a sparse matrix direct solver using extended precision (128-bit floating point). Is anyone aware of a package (SuperLU, UMFPACK, etc.) that supports extended precision?
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1answer
291 views

quad precision blas/lapack

What is the best blas/lapack library for quad precision (128 bit floating point)? I supposes that the reference fortran versions can be compiled as quad precision? This library would need to be ...
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307 views

Fast matrix operation library for Android App

I am working on an android app which needs to do some quick matrix operations (inverse transpose matrix multiplications etc) As I understand there are already many fast libraries for doing such ...
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97 views

Component Dependency Matrix for JavaScript

To get an overview of the complexity of my JavaScript application I want to get something like a Dependency Structure Matrix. I found a tool for Java code (junkdog/ecs-matrix) but not for JavaScript ...
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C++ matrix library with skip elements, skip rows and median operations

I'm looking for a C++ matrix (array) library, which can: Create a new matrix using only every Nth row of source matrix. Create a new matrix using only every Nth element of source matrix. Compute ...
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667 views

Library for computing pseudo-inverse of sparse matrix (C++)?

I have a very big matrix (hundreds of milions of entries) that holds a little number of values, and lots of zeros; that's why I thought to use a sparse matrix. There are plenty of libraries that save ...
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Platform independent library for graphics-related matrix calculations in C#

For a platform independent C# phone application (built using Xamarin), I am searching for a small matrix library which supports 3D graphics related operations. Required operations are: ...
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Looking for (for the lack of a better word) Matrix Databases

Is there a database engine where I can store matrices (like in math) and then perform operations. So these would be large matrices sometimes sparse other times not. I would basically like to perform ...
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147 views

What efficient matrix implementations are there for Java

From time to time I need a library which can perform matrix multiplication for me. I think I have most recently used EJML, but that isn't necessarily the easiest package to use when I am working with ...