LPnetlib/lp_bore3d
Netlib LP problem bore3d: minimize c'*x, where Ax=b, lo<=x<=hi
Name 
lp_bore3d 
Group 
LPnetlib 
Matrix ID 
606 
Num Rows

233 
Num Cols

334 
Nonzeros

1,448 
Pattern Entries

1,448 
Kind

Linear Programming Problem 
Symmetric

No 
Date


Author

R. Fourer 
Editor

R. Fourer 
Structural Rank 
232 
Structural Rank Full 
false 
Num Dmperm Blocks

42 
Strongly Connect Components

21 
Num Explicit Zeros

0 
Pattern Symmetry

0% 
Numeric Symmetry

0% 
Cholesky Candidate

no 
Positive Definite

no 
Type

real 
SVD Statistics 
Matrix Norm 
1.727325e+03 
Minimum Singular Value 
7.384565e16 
Condition Number 
2.339102e+18

Rank 
231 
sprank(A)rank(A) 
1 
Null Space Dimension 
2 
Full Numerical Rank? 
no 
Download Singular Values 
MATLAB

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MATLAB
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Notes 
A Netlib LP problem, in lp/data. For more information
send email to netlib@ornl.gov with the message:
send index from lp
send readme from lp/data
The following are relevant excerpts from lp/data/readme (by David M. Gay):
The column and nonzero counts in the PROBLEM SUMMARY TABLE below exclude
slack and surplus columns and the righthand side vector, but include
the cost row. We have omitted other free rows and all but the first
righthand side vector, as noted below. The byte count is for the
MPS compressed file; it includes a newline character at the end of each
line. These files start with a blank initial line intended to prevent
mail programs from discarding any of the data. The BR column indicates
whether a problem has bounds or ranges: B stands for "has bounds", R
for "has ranges". The BOUNDTYPE TABLE below shows the bound types
present in those problems that have bounds.
The optimal value is from MINOS version 5.3 (of Sept. 1988)
running on a VAX with default options.
PROBLEM SUMMARY TABLE
Name Rows Cols Nonzeros Bytes BR Optimal Value
BORE3D 234 315 1525 13160 B 1.3730803942E+03
BOUNDTYPE TABLE
BORE3D UP LO FX
Supplied by Bob Fourer.
Source: consulting.
Empty RHS section.
When included in Netlib: Extra free rows omitted.
