{
    matrix_id: '273',
    name: 'will199',
    group: 'HB',
    description: 'UNSYMMETRIC PATTERN OF ORDER 199 GIVEN BY WILLOUGHBY IN REID, 1970',
    author: 'R. Willoughby',
    editor: 'I. Duff, R. Grimes, J. Lewis',
    date: '1979',
    kind: 'structural problem',
    problem_2D_or_3D: '1',
    num_rows: '199',
    num_cols: '199',
    nonzeros: '701',
    num_explicit_zeros: '0',
    num_strongly_connected_components: '1',
    num_dmperm_blocks: '10',
    structural_full_rank: 'true',
    structural_rank: '199',
    pattern_symmetry: '0.056',
    numeric_symmetry: '0.056',
    rb_type: 'binary',
    structure: 'unsymmetric',
    cholesky_candidate: 'no',
    positive_definite: 'no',
    norm: '4.388079e+00',
    min_singular_value: '7.399593e-18',
    condition_number: '593016336941552640',
    svd_rank: '191',
    sprank_minus_rank: '8',
    null_space_dimension: '8',
    full_numerical_rank: 'no',
    svd_gap: '49095484169321.828125',
    image_files: 'will199.png,will199_dmperm.png,will199_svd.png,will199_APlusAT_graph.gif,will199_graph.gif,',
}
