Submitter Variables Constraints Density Status Group Objective MPS File
F. Ortega, L. Wolsey 2500 1750 1.14286e-03 easy beasley 144 beasleyC2.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 2499
Constraints 1750 1749
Binaries 1250 1249
Integers 0 0
Continuous 1250 1250
Implicit Integers 0 0
Fixed Variables 0 0
Nonzero Density 0.00114286 0.00114351
Nonzeroes 5000 4998
Constraint Classification Properties
Original Presolved
Total 1750 1749
Empty 0 0
Free 0 0
Singleton 0 0
Aggregations 148 148
Precedence 0 0
Variable Bound 1250 1249
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 352 352
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 2.691965
Constraint % 0.0571755 0.190042 0.171527 2.51572
Variable % 0.0800000 0.203585 0.160000 2.72000
Score 0.927723

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
1 144 144 0 0 0 - 2018-10-11 Solution found during MIPLIB2017 problem selection.

Similar instances in collection

The following instances are most similar to beasleyC2 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
beasleyC1 2500 1250 0 1250 1750 5000 F. Ortega, L. Wolsey beasley easy 85
beasleyC3 2500 1250 0 1250 1750 5000 F. Ortega, L. Wolsey beasley easy 754
mc7 3040 1520 0 1520 1920 6080 F. Ortega, L. Wolsey mc easy 3417
berlin 5304 2652 0 2652 2704 10608 MIPLIB submission pool easy 62
mc8 3040 1520 0 1520 1920 6080 F. Ortega, L. Wolsey mc easy 1566

Reference

No bibliographic information available

Last Update Nov 19, 2018 by Gregor Hendel
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