List of matrix groups in the UF Sparse Matrix Collection:
| Group | # matrices | details | description |
|---|---|---|---|
| ACUSIM | 1 | details | Computational fluid dynamics matrices from ACUSIM, Inc. |
| AG-Monien | 32 | details | AG-Monien Graph Collection, Ralf Diekmann and Robert Preis |
| AMD | 2 | details | Circuit simulation matrices from Ufuk Okuyucu, AMD, Inc. |
| ANSYS | 3 | details | Underdetermined systems needing well-conditioned bases to be found. |
| ATandT | 4 | details | Frequency domain analysis of large nonlinear analog circuits, AT&T. |
| Alemdar | 1 | details | A finite-element matrix from Bulent Alemdar, RAM International. |
| Andrews | 1 | details | Large eigenvalue problem from Stuart Andrews, Brown University, Rhode Island. |
| Andrianov | 16 | details | Matrices from Alexander Andrianov, SAS Institute Inc. |
| Arenas | 4 | details | Networks from Alex Arenas, Univeristy Rovira i Virgili, Tarragona, Spain |
| Averous | 4 | details | Matrices from David Averous, Institut National Polytechnique de Toulouse (INPT). |
| Bai | 78 | details | Matrices from Z. Bai, D. Day, J. Demmel, and J. Dongarra. |
| Barabasi | 3 | details | Notre Dame networks, A. Barabasi. |
| Bates | 3 | details | Statistical matrices, D. Bates, Univ. Wisconsin |
| Belcastro | 3 | details | Gene networks from V. Belcastro, TIGEM, Naples, Italy |
| BenElechi | 1 | details | Matrix from S. Ben Elechi, Arcelor, Inc. with many sparse right-hand sides. |
| Bindel | 6 | details | Coupled linear thermoeslasticity equations. D Bindel, UC Berkeley |
| Bodendiek | 5 | details | Curl-Curl operator of 2nd order Maxwell's equations, A. Bodendiek |
| Boeing | 32 | details | Structural engineering matrices from Roger Grimes, Boeing. |
| Bomhof | 4 | details | Matrices from circuit simulation problems. Wim Bomhof, Univ. Utrecht. |
| Botonakis | 6 | details | FEM thermal/mechanical problems from Ioannis Botonakis, Germany. |
| Bourchtein | 4 | details | Atmospheric modeling problems from Andrei Bourchtein |
| Bova | 1 | details | Model of Charleston Harbor. Steve Bova, Nichols Research Corporation. |
| Brethour | 2 | details | Numerical simulation of coating flows, from Jim Brethour. |
| Brogan | 1 | details | specular surface reconstruction problem, |
| Brunetiere | 1 | details | A matrix from Noel Brunetiere. Finite-element discretization of thermal problem. |
| Buss | 2 | details | Website recommendation system, Steven Buss, Univ. Florida |
| Bydder | 2 | details | MRI reconstruction matrices from Mark Bydder, UCSD. |
| CEMW | 4 | details | Electromagnetic problems from D. Isaak, Computational_EM_Works |
| CPM | 9 | details | Closest Point Method, Yujia Chen, Andy Wathen, Shengxin Zhu |
| Cannizzo | 1 | details | Structural engineering matrix (finite-element) from Fabio Cannizzo. |
| Castrillon | 1 | details | Counter-example matrix (denormal in A+alpha*I), J. Castrillon, Teledyne |
| Chen | 14 | details | Finite element matrices from Pu Chen, Peking University. |
| Chevron | 4 | details | 2D Helmholtz; Temporal freq. domain seismic modeling. J. Washbourne, Chevron |
| Clark | 1 | details | Tomographic reconstruction of a particle field in fluid flow, T. Clark |
| Cote | 2 | details | Vibroacoustic matrices from Andre Cote, Univ. Sherbrooke, Quebec. |
| Cunningham | 4 | details | Finite element matrices from Andrew Cunningham, Vibro-Acoustic Sciences, Inc. |
| Cylshell | 7 | details | Finite element analysis of cylindrical shells, R. Kouhia, Helsinki. |
| DIMACS10 | 152 | details | 10th DIMACS Implementation Challenge |
| DNVS | 15 | details | Positive definite matrices from Christian Damhaug, DNV Software. |
| DRIVCAV | 26 | details | Driven cavity, finite element matrices from Yousef Saad (SPARSKIT2 collection). |
| Dattorro | 3 | details | Dattorro Convex Optimization of Eternity II, Jon Dattoro |
| Davis | 1 | details | Analysis of the MATLAB FileExchange, March 2010 |
| Dehghani | 1 | details | Light transport in soft tissue, Hamid Dehghani, Univ. of Exeter, UK |
| Dziekonski | 5 | details | High order vector finite element method in electromagnetics |
| Engwirda | 1 | details | Unstructured 2D mesh (an airfoil) from Darren Engwirda. |
| FEMLAB | 9 | details | Test matrices from FEMLAB, a finite-element method toolbox for MATLAB. |
| FIDAP | 35 | details | Fluid dynamics, finite element matrices from Yousef Saad (SPARSKIT2 collection). |
| Fluorem | 5 | details | CFD matrices from Francois Pacull, FLUOREM, in Lyon, France |
| FreeFieldTechnologies | 1 | details | 3D vibro-acoustic problem, aircraft engine nacelle, from M. Gontier |
| Freescale | 7 | details | Circuit simulation matrices K. Gullapalli, Freescale Semiconductor |
| GHS_indef | 60 | details | Indefinite matrices collected by Nick Gould, Yifan Hu, and Jennifer Scott. |
| GHS_psdef | 32 | details | Positive definite matrices collected by Nick Gould, Yifan Hu, & Jennifer Scott. |
| Gaertner | 3 | details | Matrices from Dr. Klaus Gaertner, Weierstrass Institute Berlin. |
| Garon | 2 | details | Matrices from Andre Garon, Univ. of Montreal. 2D Navier-Stokes. |
| Gleich | 10 | details | Web matrices and wikipedia matrices from David Gleich, Stanford. |
| Goodwin | 2 | details | Fluide mechanics matrices from Ralph Goodwin, Univ. Illinois. |
| Graham | 1 | details | Finite element matrix from Dave Graham, Univ. of Illinois. |
| Grund | 22 | details | Matrices from Friedrich Grund, WIAS Berlin. Chemical process simulation. |
| Gset | 67 | details | Random graphs from Yinyu Ye, Univ. of Iowa. |
| Gupta | 3 | details | Linear programming matrices from Anshul Gupta, IBM T. J. Watson Research Center. |
| HB | 292 | details | The original Harwell-Boeing collection. Iain Duff, Roger Grimes, and John Lewis. |
| HVDC | 2 | details | Power simulation matrices from Alex Wang, Manitoba HVDC, Canada. |
| Hamm | 6 | details | Semiconductor simulation matrices from Steve Hamm, Motorola, Inc. |
| Hamrle | 3 | details | Circuit simulation matrices from Jaroslav Hamrle, RIKEN, Japan. |
| Harvard_Seismology | 1 | details | Earth's crust underneath Japan, Harvard Seismology Group. |
| Hohn | 6 | details | Single-material crack problem, Michael Hohn, Univ. of Utah. |
| Hollinger | 49 | details | Economic models from Peter Holinger, Intex Solutions, Inc. |
| IBM_Austin | 1 | details | Circuit simulation matrix from Emrah Acar, IBM Austin. High degree of coupling. |
| IBM_EDA | 7 | details | Circuit simulation matrices from Tim Lehner, IBM EDA. |
| INPRO | 1 | details | Parasol matrices, collected by Jacko Koster |
| IPSO | 7 | details | Power simulation matrices, Li Peijie, Inst. of Power Systems, Guangxi Univ. |
| JGD_BIBD | 21 | details | Balanced Incomplete Block Design from Mark Giesbrecht, Univ. of Waterloo |
| JGD_CAG | 3 | details | CAG matrix set from Michael Monagan, Simon Fraser Univ., Canada |
| JGD_Forest | 10 | details | Forests and Trees from Nicolas Thiery |
| JGD_Franz | 11 | details | Cohomology of various rings, from Matthias Franz, Univ. Konstanz, Germany |
| JGD_G5 | 13 | details | Decomposable subspaces at degree d of the invariant ring of G5, Nicolas Thiery. |
| JGD_GL6 | 5 | details | Differentials of the Voronoi complex of perfect forms of rank 6 mod GL_6(Z), |
| JGD_GL7d | 17 | details | Differentials of the Voronoi complex of perfect forms of rank 7 mod GL_7(Z) |
| JGD_Groebner | 8 | details | Gro"bner basis from Jean-Charles Fauge`res, |
| JGD_Homology | 128 | details | Simplicial complexes from Homology from Volkmar Welker. |
| JGD_Kocay | 12 | details | Brute force disjoint product matrices in tree algebra on n nodes, Nicolas Thiery |
| JGD_Margulies | 23 | details | Combinatorial optimization as polynomial eqns, Susan Margulies, UC Davis |
| JGD_Relat | 15 | details | Relations from Florent Hiver, Univ. Paris-Est Marne-La-Valle'e |
| JGD_SL6 | 7 | details | Differentials of the Voronoi complex of perfect forms |
| JGD_SPG | 7 | details | Symmetric powers of graphs from Gordon Royle, Univ Western Australia |
| JGD_Taha | 2 | details | Taha matrix set from Abdul Salam Jarrah, New Mexico State Univ. |
| JGD_Trefethen | 11 | details | Diagonal matrices with primes, Nick Trefethen, Oxford Univ. |
| Janna | 18 | details | Finite element simulations: gas reservoir and structural problems. Univ Padova. |
| Kamvar | 2 | details | Web matrices from Sep Kamvar, Stanford University. |
| Kemelmacher | 1 | details | Computer vision problem from Ira Kemelmacher, Weizmann Inst., Israel. |
| Kim | 2 | details | 2D complex meshes, from Wonsik Kim, Korea. |
| Koutsovasilis | 2 | details | Symmetric indefinite matrix from P. Koutsovasilis, Tech. Univ. Dresden |
| LAW | 15 | details | Laboratory for Web Algorithmics (LAW), Università degli Studi di Milano |
| LPnetlib | 138 | details | NETLIB Linear Programming problems, www.netlib.org. |
| Langemyr | 1 | details | FEM structural mechanics matrix from Lars Langemyr, COMSOL. |
| LeGresley | 3 | details | Power flow analyses of electrical grids. |
| Lee | 2 | details | FEM, Electromagnetics, Center for Computational Electromagnetics, UIUC |
| Li | 2 | details | 3D magnetohydrodynamics finite element matrix from Ben Li, Washington State Univ. |
| Lin | 1 | details | Large sparse eigenvalue problem from Chun-hung (Martin) Lin. NCHC, Taiwan. |
| LiuWenzhuo | 1 | details | Power system simulation matrix from Wenzhou Liu, EPRI, China. |
| Lourakis | 1 | details | 3D vision matrices, M. Lourakis, Foundation for Research & Technology - Hellas. |
| Lucifora | 2 | details | GSM cell traffic matrices from Salvatore Lucifora, Telecom Italia Mobile. |
| Luong | 2 | details | Photogrammetry problem from Bruno Luong, FOGALE nanotech, France. |
| MKS | 1 | details | 2-D Fokker Planck equations, electron dynamics. Dan Smith, MKS Inst. |
| Mallya | 18 | details | Chemical process simulation matrices, J. Mallya, S. Zitney, M. Stadtherr. |
| Mancktelow | 1 | details | FEM viscoelastic behavior of rocks, Neil Mancktelow, ETH-Zentrum |
| Marini | 1 | details | Economic Time Series, T. Di Fonzo (Univ Padua) and M. Marini, (ISTAT, Italy) |
| MathWorks | 11 | details | Matrices contributed by The Mathworks, Inc. |
| MaxPlanck | 2 | details | Weather shallow water equations, Max-Planck Institute of Meteoroloy |
| Mazaheri | 1 | details | Sparse bundle adjustment problem from Mehdi Mazaheri, University of Calgary |
| McRae | 2 | details | circuitscape: circuit theory applied to animal/gene flow. B. McRae, UCSB |
| Meng | 1 | details | Jacobian matrix from a computational chemistry problem, iChem, China' |
| Meszaros | 166 | details | Linear programming problems from C. Me'sza'ros |
| Mittelmann | 30 | details | Linear programming problems from H. Mittelmann |
| Moqri | 1 | details | Document similarity graph for MIS articles, including metadata |
| Morandini | 3 | details | Multibody simulation problems from Marco Morandini. |
| Muite | 4 | details | Ill-conditioned Chebyshev integration matrices from Benson Muite, Oxford. |
| Mulvey | 2 | details | Multistage stochastic financial modelling. J. Mulvey, Princeton. |
| ND | 4 | details | ND problem set. 3D mesh problems. |
| NYPA | 8 | details | Rank-deficient least squares problems. D. Maragal, New York Power Authority |
| Nasa | 11 | details | NASA matrices obtained from Alex Pothen, ICASE and Old Dominion Univ. |
| Nemeth | 26 | details | A set of matrices from Karoly Nemeth, theoretical chemistry. |
| Newman | 16 | details | Network graph collection from Mark Newman, University of Michigan |
| Norris | 12 | details | Finite element modelling of human body parts. Stuart Norris, Univ. Aukland. |
| Oberwolfach | 38 | details | Oberwolfach model reduction benchmark collection |
| Okunbor | 2 | details | Acoustic radiation around aft duct fan. Walter Eversman and Daniel Okunbor. |
| PARSEC | 21 | details | PARSEC matrices, density functional theory. Zhou, Saad, Tiago, Chelikowsky, UMN. |
| POLYFLOW | 2 | details | Parasol matrices, collected by Jacko Koster |
| Pajek | 76 | details | Pajek data sets, V. Batagelj and A. Mrvar. |
| Pereyra | 1 | details | From Victor Pereyra, Stanford University. |
| Pothen | 22 | details | Structrual engineering matrices from NASA, collected by Alex Pothen. |
| Priebel | 6 | details | Quadratic sieve matrices from David Priebel, Tenn. Tech. Univ. |
| Puri | 4 | details | ABAQUS benchmarks: pt.loaded fluid-filled shell. Srinivasan Puri |
| QCD | 14 | details | Quantum Chromodynamics, B. Medeke, Univ. Wuppertal, Germany |
| QLi | 3 | details | Mixed complementarity optimization problems from Qaun Li and Michael Ferris. |
| QY | 2 | details | Transient stabilty constrained interior pt. optimal power flow, J. Quanyuan |
| Qaplib | 8 | details | Linear programming, lower bounds for quadratic assignment problem, M. Resende. |
| Quaglino | 2 | details | FEM discretization of a viscoplastic collision problem, Alessio Quaglino. |
| Rajat | 32 | details | Circuit simulation matrices from Rajat and Raj. |
| Raju | 1 | details | 3D laminar flow, M. Raju, Case Western Univ. |
| Rommes | 35 | details | Power system models from Joost Rommes, Nelson Martins, Francisco Freitas |
| Ronis | 2 | details | Crystalline compounds (zeolites,sodalites), D. Ronis, Univ. of McGill. |
| Rost | 1 | details | semiconductor device simulation, Johann Rost, Politechnia Univ., Bucharest. |
| Rothberg | 6 | details | Structural engineering matrices from Ed Rothberg, Silicon Graphics, Inc. |
| Rucci | 1 | details | ill-conditioned least-squares problem, A. Rucci |
| Rudnyi | 1 | details | 3D fluid flow: water in a tank. Evgenii Rudnyi, IMTEK |
| SNAP | 45 | details | Networks from SNAP (Stanford Network Analysis Platform) Network Data Sets, |
| Sandia | 192 | details | Circuit simulation matrices from Sandia National Laboratory. |
| Sanghavi | 1 | details | ECL32, a semiconductor device simulation matrix. Jagesh Sanghavi, UC Berkeley. |
| Schenk | 5 | details | Symmetric indefinite KKT matrices, O. Schenk, Univ. of Basel, Switzerland |
| Schenk_AFE | 16 | details | Sheet metal forming matrices, Olaf Schenk, Univ. of Basel. |
| Schenk_IBMNA | 52 | details | Non-linear optimization matrices, Olaf Schenk, Univ. of Basel. |
| Schenk_IBMSDS | 7 | details | Semiconductor device simulation matrices, Olaf Schenk, Univ. of Basel. |
| Schenk_ISEI | 18 | details | Semiconductor device simulation matrices, Olaf Schenk, Univ. of Basel. |
| Schmid | 2 | details | Unstructured FEM, steady state thermal problem. D. Schmid, Univ. Oslo |
| Schulthess | 3 | details | Biochemical networks from Pascal Schulthess, Inst. Pathology, Berlin |
| Shen | 4 | details | Matrices from Kai Shen, UCSB (now at Univ. of Rochester, NY). |
| Shyy | 2 | details | Computational fluid dynamics, viscous flow, Wei Shyy, Univ. Florida. |
| Simon | 12 | details | Structural engineering, computational fluid dynamics. Horst Simon. |
| Sinclair | 2 | details | 3-D spectral-element elastic wave modelling in freq. domain, C. Sinclair, |
| Sorensen | 1 | details | Call graph of the Linux kernel. |
| Springer | 1 | details | Tim Springer, Solenix (www.solenix.ch), Navigation Support Office, |
| Stevenson | 1 | details | Circuit optimization for digital circuits. John Peter Stevenson, Stanford. |
| Sumner | 1 | details | A computer graphics problem from Bob Sumner, PhD student at MIT (as of 2003). |
| Szczerba | 1 | details | Ill-conditioned CFD matrix from D. Szczerba, ETH Computer Vision Lab, Zurich. |
| TKK | 12 | details | Matrices from Reijo Kouhia, Structural Mechanics, Helsinki Univ. of Technology |
| TOKAMAK | 4 | details | TOKAMAK test matrices from the SPARSKIT2 collection, Yousef Saad, Univ. MN. |
| TSOPF | 27 | details | Transient stability-constrained optimal power flow, G. Geng, Zhejiang Univ. |
| Toledo | 1 | details | Null space problem, computer graphics domain. Matrices from Sivan Toledo. |
| Tromble | 1 | details | Finite-state machine model for natural language processing. Roy Tromble. |
| UTEP | 3 | details | Matrices from Lenka Dubcova, Jakub Cerveny, and Pavel Solin |
| Um | 2 | details | FEM, electromagnetics, 2 cubes in a sphere. Evan Um, Geophysics, Stanford |
| VDOL | 91 | details | Optimal control problems, Vehicle Dynamics & Optimization Lab, UF |
| VanVelzen | 10 | details | Chemical process simulation matrices from Nils van Velzen, VORtech Computing. |
| Vavasis | 1 | details | Irregular finite-element matrix from Steve Vavasis, Cornell. |
| Wang | 6 | details | 3D semiconductor device, 2D incompressible flow. S. Wang, Univ. New South Wales. |
| Watson | 2 | details | Chemical reaction simulation matrices from Layne Watson and Jingwei Zhang. |
| Williams | 7 | details | Matrices used by S. Williams et al for sparse matrix multiplication on GPUs. |
| Wissgott | 1 | details | Parabolic FEM problem from Phillip Wissgott, TU Vienna. |
| YCheng | 3 | details | Power system state simulation matrices Yunzhi Cheng, UT Arlington. |
| YZhou | 1 | details | Circuit simulation problem, Y. Zhou, Carleton Univ, Canada |
| Yoshiyasu | 2 | details | Image editting and mesh deformation problem from Y. Yoshiyasu, Keio Univ., Japan |
| Zaoui | 1 | details | Optimal power flow, nonlinear optimization (KKT), Fabrice Zaoui, RTE, France |
| Zhao | 2 | details | Reduced-order modeling, electromagnetics. A. Cangellaris and L. Zhao. |
| Zitney | 8 | details | Chemical engineering applications. S. Zitney, Cray Research. |
| vanHeukelum | 13 | details | DNA electrophoresis model. Alexander van Heukelum, Utrect Univ, The Netherlands. |
Total number of matrices in UF Sparse Matrix Collection: 2758
Maintained by Tim Davis, last updated 10-Jun-2015.
Matrix pictures by cspy, a MATLAB function in the CSparse package.