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Sparse Matrix @sparsematrix.bsky.social · 4h

Wikipedia pages, A(i,j)=1 if page i links to page j (Nov 4, 2006) Size: 3148440x3148440 Nonzeros: 39383235 Kind: Directed Graph Author: D. Gleich Date: 2006 Link: sparse.tamu.edu/Gleich/wikipedia-20…

Sparse Matrix of size 3148440x3148440 by D. Gleich.

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Sparse Matrix @sparsematrix.bsky.social · 10h

Combinatorial optimization as polynomial eqns, Susan Margulies, UC Davis Size: 625x513 Nonzeros: 1538 Kind: Combinatorial Problem Author: S. Margulies Date: 2008 Link: sparse.tamu.edu/JGD_Margulies/flowe…

Sparse Matrix of size 625x513 by S. Margulies.

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Sparse Matrix @sparsematrix.bsky.social · 16h

Random matrix, nodes 1..n descreasing average degree.G37=pattern of G41 Size: 2000x2000 Nonzeros: 23570 Kind: Duplicate Undirected Random Graph Author: C. Helmberg Date: 1996 Link: sparse.tamu.edu/Gset/G37

Sparse Matrix of size 2000x2000 by C. Helmberg.

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Sparse Matrix @sparsematrix.bsky.social · 22h

Random matrix, nodes 1..n descreasing average degree.G58=pattern of G59 Size: 5000x5000 Nonzeros: 59140 Kind: Duplicate Undirected Random Graph Author: C. Helmberg Date: 1996 Link: sparse.tamu.edu/Gset/G58

Sparse Matrix of size 5000x5000 by C. Helmberg.

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Sparse Matrix @sparsematrix.bsky.social · 29/09/2026

linear programming problem, C. Meszaros test set Size: 4050x61521 Nonzeros: 264627 Kind: Linear Programming Problem Author: N/A Date: 2004 Link: sparse.tamu.edu/Meszaros/rlfddd

Sparse Matrix of size 4050x61521 by N/A.

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Sparse Matrix @sparsematrix.bsky.social · 29/09/2026

DIMACS10 set: redistrict/ca2010 and ca2010a Size: 710145x710145 Nonzeros: 3489366 Kind: Undirected Weighted Graph Author: W. Zhao Date: 2010 Link: sparse.tamu.edu/DIMACS10/ca2010

Sparse Matrix of size 710145x710145 by W. Zhao.

001

Sparse Matrix @sparsematrix.bsky.social · 29/09/2026

freeFlyingRobot optimal control problem (matrix 15 of 16) Size: 6038x6038 Nonzeros: 43378 Kind: Optimal Control Problem Author: B. Senses, A. Rao Date: 2015 Link: sparse.tamu.edu/VDOL/freeFlyingRobo…

Sparse Matrix of size 6038x6038 by B. Senses, A. Rao.

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Sparse Matrix @sparsematrix.bsky.social · 28/09/2026

UNSYMMETRIC - 3D STEAM MODEL OF OIL RES. - 4 X 4 X 5 - 3 DOF MAY 1983 Size: 240x240 Nonzeros: 2248 Kind: Computational Fluid Dynamics Problem Author: R. Grimes Date: 1983 Link: sparse.tamu.edu/HB/steam1

Sparse Matrix of size 240x240 by R. Grimes.

020

Sparse Matrix @sparsematrix.bsky.social · 28/09/2026

webbase: Web connectivity matrix. Williams et al. Size: 1000005x1000005 Nonzeros: 3105536 Kind: Weighted Directed Graph Author: unknown Date: 2008 Link: sparse.tamu.edu/Williams/webbase-1M

Sparse Matrix of size 1000005x1000005 by unknown.

022

Sparse Matrix @sparsematrix.bsky.social · 28/09/2026

Finite element, Navier-Stokes & other transport eqns Size: 100037x100037 Nonzeros: 3226066 Kind: Computational Fluid Dynamics Author: R. Goodwin Date: 2018 Link: sparse.tamu.edu/Goodwin/Goodwin_095

Sparse Matrix of size 100037x100037 by R. Goodwin.

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Sparse Matrix @sparsematrix.bsky.social · 27/09/2026

Sandia/adder_dcop_56 circuit simulation matrix. Sandia National Lab. Size: 1813x1813 Nonzeros: 11246 Kind: Subsequent Circuit Simulation Problem Author: R. Hoekstra Date: 2003 Link: sparse.tamu.edu/Sandia/adder_dcop_56

Sparse Matrix of size 1813x1813 by R. Hoekstra.

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Sparse Matrix @sparsematrix.bsky.social · 27/09/2026

Deterministic equiv. of stochastic linear programming problem Size: 6095x17313 Nonzeros: 35731 Kind: Linear Programming Problem Author: N/A Date: 2004 Link: sparse.tamu.edu/Meszaros/deter2

Sparse Matrix of size 6095x17313 by N/A.

000

Sparse Matrix @sparsematrix.bsky.social · 26/09/2026

Simplicial complexes from Homology from Volkmar Welker. Size: 20058x5970 Nonzeros: 100290 Kind: Combinatorial Problem Author: V. Welker Date: 2008 Link: sparse.tamu.edu/JGD_Homology/cis-n4…

Sparse Matrix of size 20058x5970 by V. Welker.

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Sparse Matrix @sparsematrix.bsky.social · 26/09/2026

transient optimal power flow, Full-Space. Guangchao Geng, Zhejiang Univ Size: 28216x28216 Nonzeros: 730080 Kind: Power Network Problem Author: G. Geng Date: 2009 Link: sparse.tamu.edu/TSOPF/TSOPF_FS_b39_…

Sparse Matrix of size 28216x28216 by G. Geng.

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Sparse Matrix @sparsematrix.bsky.social · 26/09/2026

U RIGOROUS FLASH UNIT ( CHEM. ENG. FROM A. WESTERBERG ) Size: 132x132 Nonzeros: 413 Kind: Chemical Process Simulation Problem Author: A. Westerberg Date: 1983 Link: sparse.tamu.edu/HB/west0132

Sparse Matrix of size 132x132 by A. Westerberg.

000

Sparse Matrix @sparsematrix.bsky.social · 26/09/2026

net50 matrix from Alexander Andrianov, SAS Institute Inc. Size: 16320x16320 Nonzeros: 945200 Kind: Optimization Problem Author: A. Andrianov Date: 2006 Link: sparse.tamu.edu/Andrianov/net50

Sparse Matrix of size 16320x16320 by A. Andrianov.

011

Sparse Matrix @sparsematrix.bsky.social · 25/09/2026

lowThrust optimal control problem (matrix 9 of 13) Size: 18044x18044 Nonzeros: 219589 Kind: Optimal Control Problem Author: B. Senses, A. Rao Date: 2015 Link: sparse.tamu.edu/VDOL/lowThrust_9

Sparse Matrix of size 18044x18044 by B. Senses, A. Rao.

000

Sparse Matrix @sparsematrix.bsky.social · 25/09/2026

DIMACS10 set: star-mixtures/vsp_bcsstk30_500sep_10in_1Kout Size: 58348x58348 Nonzeros: 4033156 Kind: Random Unweighted Graph Author: C. Schultz Date: 2011 Link: sparse.tamu.edu/DIMACS10/vsp_bcsstk…

Sparse Matrix of size 58348x58348 by C. Schultz.

000

Sparse Matrix @sparsematrix.bsky.social · 25/09/2026

machine learning graph: kmnist_norm_10NN Size: 10000x10000 Nonzeros: 156932 Kind: Undirected Weighted Graph Author: D. Pasadakis, C.L. Alappat, O. Schenk, G. Wellein Date: 2020 Link: sparse.tamu.edu/ML_Graph/kmnist_nor…

Sparse Matrix of size 10000x10000 by D. Pasadakis, C.L. Alappat, O. Schenk, G. Wellein.

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Sparse Matrix @sparsematrix.bsky.social · 25/09/2026

2002 web crawl of .uk domain Size: 18520486x18520486 Nonzeros: 298113762 Kind: Directed Graph Author: Laboratory for Web Algorithmics (LAW), Universita degli Studi di Milano, law.di.unimi.it/index.php Date: 2002 Link: sparse.tamu.edu/LAW/uk-2002

Sparse Matrix of size 18520486x18520486 by Laboratory for Web Algorithmics (LAW), Universita degli Studi di Milano, http://law.di.unimi.it/index.php.

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Sparse Matrix @sparsematrix.bsky.social · 24/09/2026

IBM TJ Watson, non-linear optimization Size: 4598x4598 Nonzeros: 30590 Kind: Optimization Problem Author: IBM Date: 2006 Link: sparse.tamu.edu/Schenk_IBMNA/c-28

000

Sparse Matrix @sparsematrix.bsky.social · 24/09/2026

S AIR-TRAFFIC CONTROL MODEL BY STAVROS A. ZENIOS Size: 2873x2873 Nonzeros: 1314 Kind: Optimization Problem Author: S. Zenios Date: 1985 Link: sparse.tamu.edu/HB/zenios

Sparse Matrix of size 2873x2873 by S. Zenios.

000

Sparse Matrix @sparsematrix.bsky.social · 24/09/2026

Power simulation matrix, Li Peijie, Inst. of Power Systems, Guangxi Univ. Size: 8140x8140 Nonzeros: 2012833 Kind: Power Network Problem Author: L. Peijie Date: 2011 Link: sparse.tamu.edu/IPSO/TSC_OPF_1047

Sparse Matrix of size 8140x8140 by L. Peijie.

000

Sparse Matrix @sparsematrix.bsky.social · 23/09/2026

Netlib LP problem bore3d: minimize c'*x, where Ax=b, lo<=x<=hi Size: 233x334 Nonzeros: 1448 Kind: Linear Programming Problem Author: R. Fourer Date: N/A Link: sparse.tamu.edu/LPnetlib/lp_bore3d

Sparse Matrix of size 233x334 by R. Fourer.

000

Sparse Matrix @sparsematrix.bsky.social · 23/09/2026

Simplicial complexes from Homology from Volkmar Welker. Size: 4935x6435 Nonzeros: 44415 Kind: Combinatorial Problem Author: V. Welker Date: 2008 Link: sparse.tamu.edu/JGD_Homology/n3c6-b8

Sparse Matrix of size 4935x6435 by V. Welker.

000

Sparse Matrix @sparsematrix.bsky.social · 23/09/2026

DNA electrophoresis, 5 monomers in polymer. A. van Heukelum, Utrecht U. Size: 37x37 Nonzeros: 233 Kind: Directed Weighted Graph Author: A. van Heukelum Date: 2003 Link: sparse.tamu.edu/vanHeukelum/cage5

Sparse Matrix of size 37x37 by A. van Heukelum.

010

Sparse Matrix @sparsematrix.bsky.social · 23/09/2026

Tube problem from R. Kouhia Size: 21498x21498 Nonzeros: 897056 Kind: Structural Problem Author: R. Kouhia Date: 2008 Link: sparse.tamu.edu/TKK/tube2

Sparse Matrix of size 21498x21498 by R. Kouhia.

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Sparse Matrix @sparsematrix.bsky.social · 22/09/2026

linear programming problem, C. Meszaros test set Size: 400x1200 Nonzeros: 152800 Kind: Linear Programming Problem Author: N/A Date: 2004 Link: sparse.tamu.edu/Meszaros/cari

000

Sparse Matrix @sparsematrix.bsky.social · 22/09/2026

Wei Shyy, Univ. Florida. CFD/Navier-Stokes,viscous flow, fully coupled Size: 4720x4720 Nonzeros: 20042 Kind: Computational Fluid Dynamics Problem Author: W. Shyy Date: 1994 Link: sparse.tamu.edu/Shyy/shyy41

Sparse Matrix of size 4720x4720 by W. Shyy.

000

Sparse Matrix @sparsematrix.bsky.social · 22/09/2026

Infeasible linear programming problem, C. Meszaros test set Size: 714x1071 Nonzeros: 2607 Kind: Linear Programming Problem Author: N/A Date: 2004 Link: sparse.tamu.edu/Meszaros/gams60am

000

Sparse Matrix @sparsematrix.bsky.social · 22/09/2026

linear programming problem, C. Meszaros test set Size: 1023x1408 Nonzeros: 46463 Kind: Linear Programming Problem Author: N/A Date: 2004 Link: sparse.tamu.edu/Meszaros/complex

000

Sparse Matrix @sparsematrix.bsky.social · 21/09/2026

DIMACS10 set: star-mixtures/vsp_south31_slptsk Size: 39668x39668 Nonzeros: 379828 Kind: Random Unweighted Graph Author: C. Schultz Date: 2011 Link: sparse.tamu.edu/DIMACS10/vsp_south3…

Sparse Matrix of size 39668x39668 by C. Schultz.

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Sparse Matrix @sparsematrix.bsky.social · 21/09/2026

PLATZMAN SKEW-SYMMETRIC FINITE DIFFERENCE THREE OCEAN MODEL Size: 1919x1919 Nonzeros: 9662 Kind: 2D/3D Problem Author: J. Lewis Date: 1975 Link: sparse.tamu.edu/HB/plsk1919

Sparse Matrix of size 1919x1919 by J. Lewis.

000

Sparse Matrix @sparsematrix.bsky.social · 21/09/2026

MATRIX FOR WHICH EARLY VERSION OF MA57 FAILS Size: 10001x10001 Nonzeros: 49999 Kind: Materials Problem Author: J. Blowey Date: 1992 Link: sparse.tamu.edu/GHS_indef/bloweybq

Sparse Matrix of size 10001x10001 by J. Blowey.

000

Sparse Matrix @sparsematrix.bsky.social · 21/09/2026

SPD matrix (finite difference 3D) from APACHE small Size: 715176x715176 Nonzeros: 4817870 Kind: Structural Problem Author: N/A Date: 2006 Link: sparse.tamu.edu/GHS_psdef/apache2

Sparse Matrix of size 715176x715176 by N/A.

000

Sparse Matrix @sparsematrix.bsky.social · 20/09/2026

Sandia/adder_dcop_65 circuit simulation matrix. Sandia National Lab. Size: 1813x1813 Nonzeros: 11246 Kind: Subsequent Circuit Simulation Problem Author: R. Hoekstra Date: 2003 Link: sparse.tamu.edu/Sandia/adder_dcop_65

000

Sparse Matrix @sparsematrix.bsky.social · 20/09/2026

AUDI engine piston rod; Panos Koutsovasilis, Technische Univ. Dresden Size: 71505x71505 Nonzeros: 5294285 Kind: Structural Problem Author: P. Koutsovasilis Date: 2007 Link: sparse.tamu.edu/Koutsovasilis/F2

Sparse Matrix of size 71505x71505 by P. Koutsovasilis.

001

Sparse Matrix @sparsematrix.bsky.social · 20/09/2026

Chemical process separation, Steve Zitney, Cray Research Size: 5308x5308 Nonzeros: 22680 Kind: Chemical Process Simulation Problem Author: S. Zitney Date: 1997 Link: sparse.tamu.edu/Zitney/hydr1

Sparse Matrix of size 5308x5308 by S. Zitney.

000

Sparse Matrix @sparsematrix.bsky.social · 20/09/2026

Transmission line, 10 sections, MIMO, index-2 DAE (CEPEL, Brazil) Size: 682x682 Nonzeros: 1633 Kind: Eigenvalue/Model Reduction Problem Author: F. Freitas Date: 2010 Link: sparse.tamu.edu/Rommes/M10PI_n

Sparse Matrix of size 682x682 by F. Freitas.

000

Sparse Matrix @sparsematrix.bsky.social · 19/09/2026

LP sequence: scsd8-2b-4, 16, 64 Size: 5130x35910 Nonzeros: 112770 Kind: Linear Programming Problem Sequence Author: N/A Date: 2004 Link: sparse.tamu.edu/Meszaros/scsd8-2b

Sparse Matrix of size 5130x35910 by N/A.

000

Sparse Matrix @sparsematrix.bsky.social · 19/09/2026

U 16 STAGE COLUMN SECTION, SOME STAGES SIMPLIFIED ( CHEM. ENG. ) Size: 655x655 Nonzeros: 2808 Kind: Chemical Process Simulation Problem Author: A. Westerberg Date: 1983 Link: sparse.tamu.edu/HB/west0655

Sparse Matrix of size 655x655 by A. Westerberg.

011

Sparse Matrix @sparsematrix.bsky.social · 19/09/2026

Pajek network: Kleinberg, pages linking to www.epa.gov Size: 4772x4772 Nonzeros: 8965 Kind: Directed Graph Author: J. Kleinberg Date: 2006 Link: sparse.tamu.edu/Pajek/EPA

Sparse Matrix of size 4772x4772 by J. Kleinberg.

000

Sparse Matrix @sparsematrix.bsky.social · 19/09/2026

2D finite element problem Size: 3296x3296 Nonzeros: 12864 Kind: 2D/3D Problem Author: R. Diekmann, R. Preis Date: 1998 Link: sparse.tamu.edu/AG-Monien/grid2

Sparse Matrix of size 3296x3296 by R. Diekmann, R. Preis.

000

Sparse Matrix @sparsematrix.bsky.social · 18/09/2026

M. Hohn, Univ Utah. Single-material crack problem, sinc basis log grid Size: 11532x11532 Nonzeros: 551184 Kind: Materials Problem Author: M. Hohn Date: 2003 Link: sparse.tamu.edu/Hohn/sinc15

Sparse Matrix of size 11532x11532 by M. Hohn.

000

Sparse Matrix @sparsematrix.bsky.social · 18/09/2026

Sandia/adder_dcop_40 circuit simulation matrix. Sandia National Lab. Size: 1813x1813 Nonzeros: 11246 Kind: Subsequent Circuit Simulation Problem Author: R. Hoekstra Date: 2003 Link: sparse.tamu.edu/Sandia/adder_dcop_40

001

Sparse Matrix @sparsematrix.bsky.social · 18/09/2026

Decomposable subspaces at degree d of the invariant ring of G5, Nicolas Thiery. Size: 2296x2875 Nonzeros: 46260 Kind: Combinatorial Problem Author: N. Thiery Date: 2008 Link: sparse.tamu.edu/JGD_G5/IG5-12

Sparse Matrix of size 2296x2875 by N. Thiery.

000

Sparse Matrix @sparsematrix.bsky.social · 18/09/2026

MAWI Working Group Traffic Archive: graph 201512020000 Size: 35991342x35991342 Nonzeros: 74485420 Kind: Undirected Weighted Graph Author: MAWI Date: 2015 Link: sparse.tamu.edu/MAWI/mawi_201512020…

Sparse Matrix of size 35991342x35991342 by MAWI.

000

Sparse Matrix @sparsematrix.bsky.social · 17/09/2026

Jacobian from CEPII's 'G7marmotte' OLG model, oldstack 200 Size: 59310x59310 Nonzeros: 717620 Kind: Economic Problem Author: P. Hollinger Date: 2001 Link: sparse.tamu.edu/Hollinger/g7jac200

Sparse Matrix of size 59310x59310 by P. Hollinger.

000

Sparse Matrix @sparsematrix.bsky.social · 17/09/2026

machine learning graph: Glass_10NN Size: 214x214 Nonzeros: 2986 Kind: Undirected Weighted Graph Author: D. Pasadakis, C.L. Alappat, O. Schenk, G. Wellein Date: 2020 Link: sparse.tamu.edu/ML_Graph/Glass_10NN

Sparse Matrix of size 214x214 by D. Pasadakis, C.L. Alappat, O. Schenk, G. Wellein.

000

Sparse Matrix @sparsematrix.bsky.social · 17/09/2026

Discretized electron continuity, 3d diode, nonuniform 14-14-16 mesh Size: 2903x2903 Nonzeros: 19093 Kind: Semiconductor Device Problem Sequence Author: S. Wang Date: 1994 Link: sparse.tamu.edu/Wang/wang1

Sparse Matrix of size 2903x2903 by S. Wang.

000