ngraph.sparse-collection
Version:
Subset of the University of Florida sparse matrix collection
1 lines • 9.97 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_stocfor1\n name: LPnetlib/lp_stocfor1\n [Netlib LP problem stocfor1: minimize c'*x, where Ax=b, lo<=x<=hi]\n id: 695\n date: 1988\n author: G. Gassmann\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 STOCFOR1 118 111 474 4247 -4.1131976219E+04 \n \n STOCFOR1,2,3 are stochastic forestry problems from Gus Gassmann. To \n quote Gus, \"All of them are seven-period descriptions of a forestry \n problem with a random occurrence of forest fires, and the size varies \n according to the number of realizations you use in each period.\" \n STOCFOR1 \"is the deterministic version, STOCFOR2 has 2 realizations \n each in periods 2 to 7, and the monster STOCFOR3 has 4,4,4,2,2, and 2 \n realizations, respectively.\" The compressed form of STOCFOR3 would be \n 652846 bytes long, so requesting STOCFOR3 will instead get you a bundle \n of about 174 kilobytes that includes source for Gus's program, the \n data files for generating STOCFOR3 and a summary of \"A Standard \n Input Format for Multistage Stochastic Linear Programs\" by J.R. Birge, \n M.A.H. Dempster, H.I. Gassmann, E.A. Gunn, A.J. King, and S.W. Wallace \n [COAL Newsletter No. 17 (Dec. 1987), pp. 1-19]. Data files are also \n included for generating versions of STOCFOR1,2 that have more decimal \n places than the versions in lp/data. \n \n Added to Netlib on 25 June 1988 \n \n-------------------------------------------------------------------------------"};