Submitter Variables Constraints Density Status Group Objective MPS File
Andrew Stamps 10752 27169 6.86233e-04 easy gasprod 2310.0993127 gasprod1-3.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 6896
Constraints 27169 13608
Binaries 3717 1596
Integers 0 0
Continuous 7035 5300
Implicit Integers 0 0
Fixed Variables 987 0
Nonzero Density 0.000686233 0.000731835
Nonzeroes 200463 68676
Constraint Classification Properties
Original Presolved
Total 27169 13608
Empty 626 0
Free 0 0
Singleton 858 0
Aggregations 1175 462
Precedence 3130 2487
Variable Bound 3890 2274
Set Partitioning 0 0
Set Packing 0 0
Set Covering 0 0
Cardinality 0 0
Invariant Knapsack 3374 1692
Equation Knapsack 0 0
Bin Packing 2665 1008
Knapsack 346 317
Integer Knapsack 0 0
Mixed Binary 11105 5368
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 % 0.0073800 0.185778 0.0073800 31.3847
Variable % 0.0224014 0.151296 0.0224014 17.5627
Score 0.529249

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 2310.099 6.2e-06 7e-07 2.9e-06 - 2018-10-10 Solution found during MIPLIB2017 problem selection.

Similar instances in collection

The following instances are most similar to gasprod1-3 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
gasprod1-2 10752 3716 0 7036 27169 200460 Andrew Stamps gasprod easy 983.039488258
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
unitcal_7 25755 2856 0 22899 48939 127595 R. O’Neill easy 19635558.244
neos-4358725-tagus 11494 4898 0 6596 22777 59925 Jeff Linderoth neos-pseudoapplication-57 open 4206.140099965*

Reference

No bibliographic information available

Last Update Nov 17, 2018 by Gregor Hendel
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