ngraph.sparse-collection/LPnetlib/lp_scagr7/index.js

Subset of the University of Florida sparse matrix collection

module.exports = 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matrix coordinate real general\n-------------------------------------------------------------------------------\n UF Sparse Matrix Collection, Tim Davis\n http://www.cise.ufl.edu/research/sparse/matrices/LPnetlib/lp_scagr7\n name: LPnetlib/lp_scagr7\n [Netlib LP problem scagr7: minimize c'*x, where Ax=b, lo<=x<=hi]\n id: 669\n date: 1981\n author: J. Ho, E. Loute\n ed: R. Fourer\n fields: title name A b id aux kind date author ed notes\n aux: c lo hi z0\n kind: linear programming problem\n-------------------------------------------------------------------------------\n notes:\n A Netlib LP problem, in lp/data.  For more information                    \n send email to netlib@ornl.gov with the message:                           \n                                                                           \n \t send index from lp                                                      \n \t send readme from lp/data                                                \n                                                                           \n The following are relevant excerpts from lp/data/readme (by David M. Gay):\n                                                                           \n The column and nonzero counts in the PROBLEM SUMMARY TABLE below exclude  \n slack and surplus columns and the right-hand side vector, but include     \n the cost row.  We have omitted other free rows and all but the first      \n right-hand side vector, as noted below.  The byte count is for the        \n MPS compressed file; it includes a newline character at the end of each   \n line.  These files start with a blank initial line intended to prevent    \n mail programs from discarding any of the data.  The BR column indicates   \n whether a problem has bounds or ranges:  B stands for \"has bounds\", R     \n for \"has ranges\".                                                         \n                                                                           \n The optimal value is from MINOS version 5.3 (of Sept. 1988)               \n running on a VAX with default options.                                    \n                                                                           \n                        PROBLEM SUMMARY TABLE                              \n                                                                           \n Name       Rows   Cols   Nonzeros    Bytes  BR      Optimal Value         \n SCAGR7      130    140      553       4953       -2.3313892548E+06        \n                                                                           \n Supplied by Bob Fourer.                                                   \n Source: J.K. Ho and E. Loute, \"A Set of Staircase Linear Programming      \n Test Problems\", Math. Prog. 20 (1981), pp. 245-250.                       \n                                                                           \n Bob Bixby reports that the CPLEX solver (running on a Sparc station)      \n finds slightly different optimal values for some of the problems.         \n On a MIPS processor, MINOS version 5.3 (with crash and scaling of         \n December 1989) also finds different optimal values for some of the        \n problems.  The following table shows the values that differ from those    \n shown above.  (Whether CPLEX finds different values on the recently       \n added problems remains to be seen.)                                       \n                                                                           \n Problem        CPLEX(Sparc)          MINOS(MIPS)                          \n SCAGR7      -2.3313898243E+06    -2.3313897524E+06                        \n                                                                           \n-------------------------------------------------------------------------------"};