ngraph.sparse-collection
Version:
Subset of the University of Florida sparse matrix collection
1 lines • 9.15 kB
JavaScript
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_blend\n name: LPnetlib/lp_blend\n [Netlib LP problem blend: minimize c'*x, where Ax=b, lo<=x<=hi]\n id: 603\n date: 1989\n author: N. Gould\n ed: D. Gay\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 BLEND 75 83 521 3227 -3.0812149846E+01 \n \n Nick Gould supplied BLEND from the Harwell collection of LP test problems. \n \n Concerning the problems he supplied, Nick Gould says that BLEND \"is \n a variant of the [oil refinery] problem in Murtagh's book (the \n coefficients are different) which I understand John Reid obtained \n from the people at NPL (Gill and Murray?); they were also the original \n sources for the SC problems\" \n \n Added to Netlib on 6 April 1989 \n \n-------------------------------------------------------------------------------"};