Submitter Variables Constraints Density Status Group Objective MPS File
Emilie Danna 1226 335 7.62095e-03 easy app 212040.3571429 app2-2.mps.gz

The archive contains 5 instances coming from 3 applications.app1 is interesting because the continuous variables (w) drive the model.Some solvers have numerical problems on app2 models: some solutions found violate the constraints by a small amount.app2 and app3 models are easy to solve. But they don’t solve fast enough for the time limit I have in mind so I’d like to propose them for inclusion in MIPLIB.

Imported from the MIPLIB2010 submissions.

Instance Statistics

Detailed explanation of the following tables can be found here.

Size Related Properties
Original Presolved
Variables 1226 1226
Constraints 335 335
Binaries 1226 1226
Integers 0 0
Continuous 0 0
Implicit Integers 0 0
Fixed Variables 0 0
Nonzero Density 0.00762095 0.00762095
Nonzeroes 3130 3130
Constraint Classification Properties
Original Presolved
Total 335 335
Empty 0 0
Free 0 0
Singleton 0 0
Aggregations 0 0
Precedence 0 0
Variable Bound 321 321
Set Partitioning 0 0
Set Packing 12 12
Set Covering 0 0
Cardinality 0 0
Invariant Knapsack 0 0
Equation Knapsack 0 0
Bin Packing 0 0
Knapsack 0 0
Integer Knapsack 0 0
Mixed Binary 2 2
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 2.271842
Constraint % 0.298507 0.534425 0.597015 1.19403
Variable % 0.163132 0.227596 0.244698 0.40783
Score 0.991585

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 212040.4 1e+100 3.2e-06 0 0 - 2018-10-12 Solution found during MIPLIB2017 problem selection.

Similar instances in collection

The following instances are most similar to app2-2 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
app2-1 3283 3283 0 0 1038 8652 Emilie Danna app easy 19294.12
sp97ar 14101 14101 0 0 1761 290968 J. Goessens, S. v. Hoessel, L. Kroon sp9 easy 660705645.76
sp98ar 15085 15085 0 0 1435 426148 J. Goessens, S. v. Hoessel, L. Kroon sp9 easy 529740623.20
neos-5140963-mincio 196 183 0 13 184 834 Jeff Linderoth neos-pseudoapplication-109 easy 14393.00
sp97ic 12497 12497 0 0 1033 316629 J. Goessens, S. v. Hoessel, L. Kroon sp9 easy 427684487.68

Reference

No bibliographic information available

Last Update Nov 09, 2018 by Gregor Hendel
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