Submitter Variables Constraints Density Status Group Objective MPS File
Andrew Stamps 29568 72728 1.30551e-04 easy gasprod 1375631.6625 gasprod2-2.mps.gz

Production planning model of a second industrial gas system. Two model instances included.

Instance Statistics

Detailed explanation of the following tables can be found here.

Size Related Properties
Original Presolved
Variables 29568 24096
Constraints 72728 48339
Binaries 6826 5461
Integers 0 0
Continuous 22742 18635
Implicit Integers 0 0
Fixed Variables 1911 0
Nonzero Density 0.000130551 0.000139580
Nonzeroes 280740 162580
Constraint Classification Properties
Original Presolved
Total 72728 48339
Empty 116 0
Free 0 0
Singleton 680 0
Aggregations 3591 3149
Precedence 16970 13677
Variable Bound 16303 9320
Set Partitioning 0 0
Set Packing 316 272
Set Covering 0 0
Cardinality 0 0
Invariant Knapsack 3361 2889
Equation Knapsack 0 0
Bin Packing 850 787
Knapsack 0 0
Integer Knapsack 0 0
Mixed Binary 30541 18245
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 2.697229
Constraint % 0.00214 0.125188 0.006420 33.4581
Variable % 0.00763 0.103155 0.011443 21.2877
Score 0.538988

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 1375632 9e-07 3.71e-05 3.72e-05 - 2018-10-13 Solution found during MIPLIB2017 problem selection.

Similar instances in collection

The following instances are most similar to gasprod2-2 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
gasprod1-2 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
gasprod1-1 10920 4053 0 6867 27695 201348 Andrew Stamps gasprod open 291.5247315909*
unitcal_7 25755 2856 0 22899 48939 127595 R. O’Neill easy 19635558.244
gasprod2-1 29568 7389 0 22179 73448 282846 Andrew Stamps gasprod easy 1628548.2968

Reference

No bibliographic information available

Last Update Nov 19, 2018 by Gregor Hendel
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