Submitter Variables Constraints Density Status Group Objective MPS File
F. Ortega, L. Wolsey 2500 1750 1.14286e-03 easy beasley 85 beasleyC1.mps.gz

Fixed cost network flow problems

Imported from the MIPLIB2010 submissions.

Instance Statistics

Detailed explanation of the following tables can be found here.

Size Related Properties
Original Presolved
Variables 2500 2498
Constraints 1750 1748
Binaries 1250 1248
Integers 0 0
Continuous 1250 1250
Implicit Integers 0 0
Fixed Variables 0 0
Nonzero Density 0.00114286 0.00114416
Nonzeroes 5000 4996
Constraint Classification Properties
Original Presolved
Total 1750 1748
Empty 0 0
Free 0 0
Singleton 0 0
Aggregations 145 145
Precedence 0 0
Variable Bound 1250 1248
Set Partitioning 0 0
Set Packing 0 0
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 355 355
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 2.535294
Constraint % 0.0572738 0.281847 0.171821 8.36197
Variable % 0.0800000 0.291930 0.160000 8.80000
Score 0.946756

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 85 85 0 0 0 - 2018-10-11 Solution found during MIPLIB2017 problem selection.

Similar instances in collection

The following instances are most similar to beasleyC1 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
beasleyC2 2500 1250 0 1250 1750 5000 F. Ortega, L. Wolsey beasley easy 144
beasleyC3 2500 1250 0 1250 1750 5000 F. Ortega, L. Wolsey beasley easy 754
berlin 5304 2652 0 2652 2704 10608 MIPLIB submission pool easy 62
brasil 6612 3306 0 3306 3364 13224 MIPLIB submission pool easy 13655
mc7 3040 1520 0 1520 1920 6080 F. Ortega, L. Wolsey mc easy 3417

Reference

No bibliographic information available

Last Update Nov 17, 2018 by Gregor Hendel
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