Submitter Variables Constraints Density Status Group Objective MPS File
Emilie Danna 2480 4926 1.49593e-03 easy app -3 app1-1.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 2480 2477
Constraints 4926 4873
Binaries 1225 1224
Integers 0 0
Continuous 1255 1253
Implicit Integers 0 0
Fixed Variables 0 0
Nonzero Density 0.00149593 0.00149332
Nonzeroes 18275 18025
Constraint Classification Properties
Original Presolved
Total 4926 4873
Empty 0 0
Free 0 0
Singleton 1 0
Aggregations 0 0
Precedence 1225 1176
Variable Bound 0 96
Set Partitioning 0 0
Set Packing 0 0
Set Covering 25 24
Cardinality 0 0
Invariant Knapsack 0 0
Equation Knapsack 0 0
Bin Packing 0 0
Knapsack 0 0
Integer Knapsack 0 0
Mixed Binary 3675 3577
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 1.869232
Constraint % 0.0205212 1.02578 0.0410425 3.03714
Variable % 0.0807103 1.36931 0.0807103 3.99516
Score 0.719682

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 -3 -3 0 0 0 - 2018-10-12 Solution found during MIPLIB2017 problem selection.

Similar instances in collection

The following instances are most similar to app1-1 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
app1-2 26871 13300 0 13571 53467 199175 Emilie Danna app easy -41
loopha13 19356 18150 0 1206 23758 41809 Hamideh easy 6.40233
rocII-5-11 11523 11341 0 182 26897 303291 Joerg Rambau rocI easy -6.675504731538
fhnw-schedule-pairb200 40200 40000 0 200 99554 298554 Simon Felix schedule open -17.508798775*
neos-1445532 14406 1999 0 12407 1924 27736 NEOS Server Submission neos-pseudoapplication-88 easy -17041

Reference

No bibliographic information available

Last Update Nov 09, 2018 by Gregor Hendel
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