{
    matrix_id: '2653',
    name: 'Delor338K',
    group: 'ANSYS',
    description: 'underdetermined system from ANSYS',
    author: 'E. Delor',
    editor: 'T. Davis',
    date: '2011',
    kind: 'least squares problem',
    problem_2D_or_3D: '0',
    num_rows: '343236',
    num_cols: '887058',
    nonzeros: '4211599',
    num_explicit_zeros: '0',
    num_strongly_connected_components: '437423',
    num_dmperm_blocks: '1',
    structural_full_rank: 'true',
    structural_rank: '343236',
    pattern_symmetry: '0.000',
    numeric_symmetry: '0.000',
    rb_type: 'real',
    structure: 'rectangular',
    cholesky_candidate: 'no',
    positive_definite: 'no',
    notes: 'Goal is to find a permutation or factorization        
that places A in upper trapezoidal form, [R1 R2] where
R1 is well-conditioned, square, and upper triangular, 
and where R1\R2 is as sparse as possible.             
',
    image_files: 'Delor338K.png,Delor338K_scc.png,Delor338K_graph.gif,',
}
