Results for tag:"sparse-matrix" (159 results)

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Most efficient way to enter values into pre-allocated sparse matrix?

Asked by Tudor on 6 Dec 2019
Latest activity Edited by Matt J on 6 Dec 2019
Accepted Answer by Matt J
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How to take PCA of large sparse matrices without losing a row

Asked by Amigo on 29 Oct 2019
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How to fastly construct a sparse matrix with each column equal to some sparse vector

Asked by yu wen on 26 Sep 2019
Latest activity Commented on by yu wen on 26 Sep 2019
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sparse matrix operations to gain efficiency

Asked by AM on 15 Jul 2019
Latest activity Edited by Cedric on 16 Jul 2019
Accepted Answer by John D'Errico
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Create block sparse matrix

Asked by KSMAT21 on 23 Jun 2019
Latest activity Commented on by John D'Errico on 26 Jun 2019
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Sparse Matrix with Non-positive Indices

Asked by David Mwangi on 11 Jun 2019
Latest activity Edited by John D'Errico on 11 Jun 2019
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Different matrix multiplication results from the sparse and full version of the same matrix

Asked by pages larry on 11 Jun 2019
Latest activity Answered by Alex Mcaulley on 11 Jun 2019
Accepted Answer by Alex Mcaulley
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How to do binary linear algebra on a sparse matrix in Matlab?

Asked by Srivatsa Tata on 10 Jun 2019
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How to find the last nonzero entry in all rows of a sparse matrix?

Asked by Benson Gou on 8 Apr 2019
Latest activity Commented on by Benson Gou on 8 Apr 2019
Accepted Answer by Akira Agata
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In sparse matrix eigs(A,k,sigma), how to specify both shift and direction

Asked by Haining Pan on 3 Apr 2019
Latest activity Answered by Christine Tobler on 3 Apr 2019
Accepted Answer by Christine Tobler
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Which is more efficient: iteratively filling in a sparse matrix vs. creating a new sparse matrix every time i need to update the matrix?

Asked by James Heald on 15 Mar 2019
Latest activity Edited by James Tursa on 16 Mar 2019
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Vectorized operation of sparse matrix

Asked by Esegboria Osarhemen on 5 Mar 2019
Latest activity Commented on by Esegboria Osarhemen on 6 Mar 2019
Accepted Answer by Matt J
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How parallelize the solution of sparse matrices using mldivide

Asked by Emil Partsch on 28 Feb 2019
Latest activity Edited by Emil Partsch on 5 Mar 2019
Accepted Answer by Matt J
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Efficient sparse matrix operation

Asked by Esegboria Osarhemen on 5 Mar 2019
Latest activity Answered by Stephan on 5 Mar 2019
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How can I make this code run faster with a sparse matrix

Asked by Esegboria Osarhemen on 2 Mar 2019
Latest activity Commented on by John D'Errico on 2 Mar 2019
Accepted Answer by John D'Errico
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Solving large sparse linear system of equations

Asked by Meet Sanghvi on 28 Feb 2019
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Creating a Sparse Matrix

Asked by Ahmad Hasnain on 26 Feb 2019
Latest activity Commented on by Ahmad Hasnain on 26 Feb 2019
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How to find out the location difference of nonzero entries in two sparse matrices?

Asked by Benson Gou on 23 Feb 2019
Latest activity Commented on by Stephan on 24 Feb 2019
Accepted Answer by Stephan
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How to do a quick division between a column array and a matrix?

Asked by Benson Gou on 28 Jan 2019
Latest activity Commented on by Benson Gou on 28 Jan 2019
Accepted Answer by Omer Yasin Birey
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Collapsing preallocated memory of sparse matrix

Asked by Hyeokjin Jho on 22 Jan 2019
Latest activity Commented on by Bjorn Gustavsson on 23 Jan 2019
Accepted Answer by Bjorn Gustavsson
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Fast way to modify values in big sparse matrix?

Asked by Heo Suwoong on 18 Jan 2019
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Sparse matrix in OLS , sparse matrix transpose and multiply

Asked by Nooshin Mahmoodi on 9 Dec 2018
Latest activity Edited by Bruno Luong on 11 Dec 2018
Accepted Answer by Star Strider
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eigen value problem for sparse matrices

Asked by amirhossein amirabadi on 22 Aug 2018
Latest activity Commented on by Andrew Knyazev on 21 Sep 2018
Accepted Answer by Matt J
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How to directly construct a sparse transition probability matrix

Asked by Martine van den Boomen on 24 Aug 2018
Latest activity Edited by Martine van den Boomen on 25 Aug 2018
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Creating a sparse tridiagonal matrix (for 2D finite difference second order Laplacian)

Asked by Raphaël on 16 Aug 2018
Latest activity Answered by msaitta on 16 Aug 2018
Accepted Answer by msaitta
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Use Pardiso from Intel MKL

Asked by Lester on 8 May 2014
Latest activity Commented on by Royi Avital on 13 Aug 2018
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How to change values of elements in a sparse matrix

Asked by Ismaeel on 9 Aug 2018
Latest activity Edited by James Tursa on 9 Aug 2018
Accepted Answer by James Tursa
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What can I do to reduce sparse system solve time for a finite element analysis?

Asked by jjp11 on 17 Jan 2017
Latest activity Answered by Paulo Ribeiro on 11 Jun 2018
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Extracting sub matrix from sparse matrix

Asked by Daniel Mckenzie on 20 Apr 2018
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convert sparse matrix form matlab format into ijv coordinate format

Asked by othello nag on 31 Mar 2018
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Squaring a sparse upper-triangular matrix results in more non-zero elements than its original self??

Asked by matt labber on 7 Mar 2018
Latest activity Commented on by matt labber on 8 Mar 2018
Accepted Answer by John D'Errico
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Average distance of nonzero diagonal to the main diagonal for sparse matrix

Asked by Kanika Sood on 6 Mar 2018
Latest activity Commented on by Kanika Sood on 8 Mar 2018
Accepted Answer by Jos (10584)
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Problem finding minimal spanning tree from a graph

Asked by Matias Micheletto on 26 Feb 2018
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How to efficiently use sparse function for assembling huge matrices

Asked by Ahmad Gad on 19 Nov 2017
Latest activity Edited by Stephen23 on 20 Nov 2017
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Find if two sparse matrix have 1 in same position

Asked by Lorenzo Lasagni on 1 Nov 2017
Latest activity Commented on by Cedric on 1 Nov 2017
Accepted Answer by Cedric
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Making a diagonally dominant matrix sparse

Asked by Ioannis Nemparis on 16 Oct 2017
Latest activity Edited by Walter Roberson on 16 Oct 2017
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Sparse matrices and memory

Asked by Hook on 4 Oct 2017
Latest activity Commented on by James Tursa on 4 Oct 2017
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Multiplying large matrices in Simulink and calling constant values only once

Asked by Charikleia Stoura on 27 Sep 2017
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Can I reduce computation time for the matrix computation (sparse matrices)

Asked by Abi Waqas on 23 Aug 2017
Latest activity Commented on by Matt J on 28 Aug 2017
Accepted Answer by Matt J
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The most efficient way to add a new column or new row to a sparse matrix

Asked by Ming on 13 Jul 2017
Latest activity Answered by James Tursa on 14 Jul 2017
Accepted Answer by James Tursa
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Extract data from sparse matrix in a parfor loop

Asked by d on 29 May 2017
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How to easily solve an equation of the form AX =B where A is a large sparse matrix???

Asked by ASHIK A S on 24 May 2017
Latest activity Commented on by Stephen23 on 24 May 2017
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I'm trying to create a n by n sparse matrix with 3*xi-xi^2 on the main diagonal of K, and with with 6*xi on the sup-diagonal of K , where i starts from 1 to n. And everywhere else 0. Can anyone please tell me how to get that ?

Asked by kingsley on 17 Apr 2017
Latest activity Answered by Steven Lord on 17 Apr 2017
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memory requirement for a complex sparse matrix

Asked by pfb on 21 Oct 2014
Latest activity Edited by James Tursa on 14 Feb 2017
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Trying to vectorize double for loop(updating pieces of sparse matrix over many iterations)

Asked by josh l on 2 Feb 2017
Latest activity Edited by josh l on 2 Feb 2017
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MATLAB Sparse Matrix Multiplication Time Complexity

Asked by Sina Sj on 25 Jan 2017
Latest activity Edited by John D'Errico on 25 Jan 2017
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Weird!!!! Extremely simple question!! Can't assign values to first row of a sparse matrix, please help.

Asked by Albert on 1 Dec 2016
Latest activity Answered by Albert on 1 Dec 2016
Accepted Answer by James Tursa
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How to find the median of nonzero elements in each row of sparse matrix

Asked by Albert on 29 Nov 2016
Latest activity Edited by James Tursa on 30 Nov 2016
Accepted Answer by Guillaume
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Upgrading PC, tips to finding bottlenecks?

Asked by Joshua Lauzier on 28 Nov 2016
Latest activity Commented on by Walter Roberson on 29 Nov 2016
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Sparse matrix inversion in parallel

Asked by Alex on 7 Jun 2012
Latest activity Commented on by Remington Reid on 12 Oct 2016
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