Submitter Variables Constraints Density Status Group Objective MPS File
Emilie Danna 3283 1038 2.53892e-03 easy app 19294.125 app2-1.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 3283 3283
Constraints 1038 1038
Binaries 3283 3283
Integers 0 0
Continuous 0 0
Implicit Integers 0 0
Fixed Variables 0 0
Nonzero Density 0.00253892 0.00253892
Nonzeroes 8652 8652
Constraint Classification Properties
Original Presolved
Total 1038 1038
Empty 0 0
Free 0 0
Singleton 0 0
Aggregations 0 0
Precedence 0 0
Variable Bound 1022 1022
Set Partitioning 0 0
Set Packing 14 14
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 2.619093
Constraint % 0.0963391 0.2405 0.1926780 1.252410
Variable % 0.0609199 0.1065 0.0913798 0.426439
Score 0.996610

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 19294.12 1e+100 8.1e-06 0 0 - 2018-10-12 Solution found during MIPLIB2017 problem selection.

Similar instances in collection

The following instances are most similar to app2-1 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
app2-2 1226 1226 0 0 335 3130 Emilie Danna app easy 212040.4
sp97ar 14101 14101 0 0 1761 290968 J. Goessens, S. v. Hoessel, L. Kroon sp9 easy 660705645.8
sp98ar 15085 15085 0 0 1435 426148 J. Goessens, S. v. Hoessel, L. Kroon sp9 easy 529740623.2
sp97ic 12497 12497 0 0 1033 316629 J. Goessens, S. v. Hoessel, L. Kroon sp9 easy 427684487.7
neos-5140963-mincio 196 183 0 13 184 834 Jeff Linderoth neos-pseudoapplication-109 easy 14393.0

Reference

No bibliographic information available

Last Update Nov 09, 2018 by Gregor Hendel
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