Submitter Variables Constraints Density Status Group Objective MPS File
J. Aronson 504 285 7.01754e-03 easy ran 3664 ran12x21.mps.gz

Fixed charge transportation problem

Imported from the MIPLIB2010 submissions.

Instance Statistics

Detailed explanation of the following tables can be found here.

Size Related Properties
Original Presolved
Variables 504 504
Constraints 285 285
Binaries 252 252
Integers 0 0
Continuous 252 252
Implicit Integers 0 0
Fixed Variables 0 0
Nonzero Density 0.00701754 0.00701754
Nonzeroes 1008 1008
Constraint Classification Properties
Original Presolved
Total 285 285
Empty 0 0
Free 0 0
Singleton 0 0
Aggregations 0 0
Precedence 0 0
Variable Bound 252 252
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 33 33
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 1.342423
Constraint % 4.5614 4.5614 4.5614 4.5614
Variable % 4.7619 4.7619 4.7619 4.7619
Score 0.912281

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 3664 3664 0 0 0 - 2018-10-11 Solution found during MIPLIB2017 problem selection.

Similar instances in collection

The following instances are most similar to ran12x21 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
ran13x13 338 169 0 169 195 676 J. Aronson ran easy 3252.00
aflow30a 842 421 0 421 479 2091 T. Achterberg aflow easy 1158.00
gr4x6 48 24 0 24 34 96 MIPLIB submission pool easy 202.35
aflow40b 2728 1364 0 1364 1442 6783 T. Achterberg aflow easy 1168.00
h50x2450 4900 2450 0 2450 2549 12152 MIPLIB submission pool fixed-cost-network-flow easy 32906.88

Reference

No bibliographic information available

Last Update Nov 19, 2018 by Gregor Hendel
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