Submitter Variables Constraints Density Status Group Objective MPS File
Andrew Stamps 10752 27169 6.86222e-04 easy gasprod 983.039488258 gasprod1-2.mps.gz

Production planning model for an industrial gas process. Three instances of the model included.

Instance Statistics

Detailed explanation of the following tables can be found here.

Size Related Properties
Original Presolved
Variables 10752 6890
Constraints 27169 13577
Binaries 3716 1592
Integers 0 0
Continuous 7036 5298
Implicit Integers 0 0
Fixed Variables 988 0
Nonzero Density 0.000686222 0.000731344
Nonzeroes 200460 68414
Constraint Classification Properties
Original Presolved
Total 27169 13577
Empty 626 0
Free 0 0
Singleton 861 0
Aggregations 1172 461
Precedence 3126 2483
Variable Bound 3894 2263
Set Partitioning 0 0
Set Packing 0 0
Set Covering 0 0
Cardinality 0 0
Invariant Knapsack 3360 1689
Equation Knapsack 0 0
Bin Packing 2664 1007
Knapsack 333 319
Integer Knapsack 0 0
Mixed Binary 11133 5355
General Linear 0 0
Indicator 0 0

Structure

Available nonzero structure and decomposition information. Further information can be found here.

value min median mean max
Components 2.513218
Constraint % 0.0074000 0.185795 0.0074000 32.1891
Variable % 0.0224215 0.151225 0.0224215 18.7668
Score 0.524123

Best Known Solution(s)

Find solutions below. Download the archive containing all solutions from the Download page.

ID Objective Exact Int. Viol Cons. Viol Obj. Viol Submitter Date Description
1 983.0395 983.041 0 9e-07 0 - 2018-10-10 Solution found during MIPLIB2017 problem selection.

Similar instances in collection

The following instances are most similar to gasprod1-2 in the collection. This similarity analysis is based on 100 scaled instance features describing properties of the variables, objective function, bounds, constraints, and right hand sides.

Instance Variables Binaries Integers Continuous Constraints Nonz. Submitter Group Status Objective
gasprod1-3 10752 3717 0 7035 27169 200463 Andrew Stamps gasprod easy 2310.0993127
gasprod1-1 10920 4053 0 6867 27695 201348 Andrew Stamps gasprod open 291.5247315909*
gasprod2-2 29568 6826 0 22742 72728 280740 Andrew Stamps gasprod easy 1375631.6625
neos-4358725-tagus 11494 4898 0 6596 22777 59925 Jeff Linderoth neos-pseudoapplication-57 open 4206.140099965*
unitcal_7 25755 2856 0 22899 48939 127595 R. O’Neill easy 19635558.244

Reference

No bibliographic information available

Last Update Nov 17, 2018 by Gregor Hendel
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