• UF Sparse Matrix Collection

    UF Sparse Matrix Collection: Williams group.

  • Click here for a description of the Williams group.
  • Click here for a list of all matrix groups.
  • Click here for a list of all matrices.

    matrix graph Group/Name id download # rows # cols nonzeros type sym spd?
    Williams/cant Williams/cant Williams/cant 2375 MAT, MM, RB 62,451 62,451 4,007,383 real symmetric yes yes
    Williams/consph Williams/consph Williams/consph 2374 MAT, MM, RB 83,334 83,334 6,010,480 real symmetric yes yes
    Williams/cop20k_A Williams/cop20k_A Williams/cop20k_A 2378 MAT, MM, RB 121,192 121,192 2,624,331 real symmetric yes no
    Williams/mac_econ_fwd500 Williams/mac_econ_fwd500 Williams/mac_econ_fwd500 2376 MAT, MM, RB 206,500 206,500 1,273,389 real unsymmetric 0.56% no
    Williams/mc2depi Williams/mc2depi Williams/mc2depi 2377 MAT, MM, RB 525,825 525,825 2,100,225 integer unsymmetric 0% no
    Williams/pdb1HYS Williams/pdb1HYS Williams/pdb1HYS 2373 MAT, MM, RB 36,417 36,417 4,344,765 real symmetric yes yes
    Williams/webbase-1M Williams/webbase-1M Williams/webbase-1M 2379 MAT, MM, RB 1,000,005 1,000,005 3,105,536 real unsymmetric 2% no

    Maintained by Tim Davis, last updated 10-Jun-2015.
    Matrix pictures by cspy, a MATLAB function in the CSparse package.
    See UFget to download directly into MATLAB.