brasil

decomposition benchmark_suitable variable_bound mixed_binary

Submitter	Variables	Constraints	Density	Status	Group	Objective	MPS File
MIPLIB submission pool	6612	3364	5.9453e-04	easy	–	13655	brasil.mps.gz

Imported from the MIPLIB2010 submissions.

Location of instance in collection

Instance Statistics

Detailed explanation of the following tables can be found here.

Size Related Properties
	Original	Presolved
Variables	6612	6612
Constraints	3364	3364
Binaries	3306	3306
Integers	0	0
Continuous	3306	3306
Implicit Integers	0	0
Fixed Variables	0	0
Nonzero Density	0.00059453	0.00059453
Nonzeroes	13224	13224

Constraint Classification Properties
	Original	Presolved
Total	3364	3364
Empty	0	0
Free	0	0
Singleton	0	0
Aggregations	0	0
Precedence	0	0
Variable Bound	3306	3306
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	58	58
General Linear	0	0
Indicator	0	0

Structure

Available nonzero structure and decomposition information. Further information can be found here.

Nonzero entries of original problem

Nonzero entries after trivial presolving

Decomposed structure of original problem (dec-file)

Decomposed structure after trivial presolving (dec-file)

	value	min	median	mean	max
Components	3.519434
Constraint %		0.0297265	0.0297265	0.0297265	0.0297265
Variable %		0.0302480	0.0302480	0.0302480	0.0302480
Score	0.982461

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	13655	13655	0	0	0	-	2018-10-11	Solution found during MIPLIB2017 problem selection.

Similar instances in collection

The following instances are most similar to brasil 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	Status	Variables	Binaries	Continuous	Constraints	Nonz.	Submitter	Group	Objective	Tags
berlin	easy	5304	2652	2652	2704	10608	MIPLIB submission pool	–	1043.999999997141	decomposition benchmark_suitable variable_bound mixed_binary
thor50dday	hard	106261	53131	53130	53360	212060	Daniel Rehfeldt	–	40417	benchmark decomposition benchmark_suitable variable_bound mixed_binary
mc7	easy	3040	1520	1520	1920	6080	F. Ortega, L. Wolsey	mc	3417	decomposition benchmark_suitable variable_bound mixed_binary
mc11	easy	3040	1520	1520	1920	6080	F. Ortega, L. Wolsey	mc	11688.99999999966	benchmark decomposition benchmark_suitable variable_bound mixed_binary
mc8	easy	3040	1520	1520	1920	6080	F. Ortega, L. Wolsey	mc	1566	decomposition benchmark_suitable variable_bound mixed_binary

Reference

No bibliographic information available