Submitter Variables Constraints Density Status Group Objective MPS File
Andrew Stamps 10920 27695 6.65769e-04 open gasprod 291.5247315909 gasprod1-1.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 10920 7594
Constraints 27695 15684
Binaries 4053 2174
Integers 0 0
Continuous 6867 5420
Implicit Integers 0 0
Fixed Variables 819 0
Nonzero Density 0.000665769 0.000835486
Nonzeroes 201348 99510
Constraint Classification Properties
Original Presolved
Total 27695 15684
Empty 626 0
Free 0 0
Singleton 860 0
Aggregations 1360 688
Precedence 3298 2624
Variable Bound 4226 2837
Set Partitioning 0 0
Set Packing 0 0
Set Covering 0 0
Cardinality 0 0
Invariant Knapsack 4067 2336
Equation Knapsack 0 0
Bin Packing 3191 1560
Knapsack 346 317
Integer Knapsack 0 0
Mixed Binary 9721 5322
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 2.517196
Constraint % 0.0064900 0.199558 0.0064900 27.5217
Variable % 0.0207727 0.166277 0.0207727 16.1197
Score 0.581327

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
1 291.5247 0 1e-06 0 - 2018-10-10 Solution found during MIPLIB2017 problem selection.

Similar instances in collection

The following instances are most similar to gasprod1-1 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
gasprod1-3 10752 3717 0 7035 27169 200463 Andrew Stamps gasprod easy 2310.0993127
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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