pigeon-20

benchmark_suitable set_partitioning cardinality invariant_knapsack mixed_binary

Submitter	Variables	Constraints	Density	Status	Group	Objective	MPS File
Sam Allen	1580	3661	5.72231e-03	easy	pigeon	-19000	pigeon-20.mps.gz

Instance of 3D packing (container loading) problem 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	1580	1400
Constraints	3661	3660
Binaries	1400	1340
Integers	0	0
Continuous	180	60
Implicit Integers	0	0
Fixed Variables	0	0
Nonzero Density	0.00572231	0.00645589
Nonzeroes	33100	33080

Constraint Classification Properties
	Original	Presolved
Total	3661	3660
Empty	0	0
Free	0	0
Singleton	0	0
Aggregations	0	0
Precedence	0	0
Variable Bound	0	0
Set Partitioning	0	20
Set Packing	0	0
Set Covering	0	0
Cardinality	120	100
Invariant Knapsack	1140	1140
Equation Knapsack	0	0
Bin Packing	0	0
Knapsack	1	0
Integer Knapsack	0	0
Mixed Binary	2400	2400
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	0.602060
Constraint %		21.8579	21.8579	21.8579	21.8579
Variable %		32.8571	32.8571	32.8571	32.8571
Score	0.440281

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	-19000	-19000	0	0	0	-	2018-10-13	Solution found during MIPLIB2017 problem selection.

Similar instances in collection

The following instances are most similar to pigeon-20 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
pigeon-16	easy	1072	928	144	2353	21104	Sam Allen	pigeon	-15000	benchmark_suitable set_partitioning cardinality invariant_knapsack mixed_binary
pigeon-13	easy	754	637	117	1561	13871	Sam Allen	pigeon	-12000	benchmark_suitable set_partitioning cardinality invariant_knapsack mixed_binary
pigeon-10	easy	490	400	90	931	8150	Sam Allen	pigeon	-9000	benchmark_suitable set_partitioning cardinality invariant_knapsack mixed_binary
pigeon-08	easy	344	272	72	601	5176	Sam Allen	pigeon	-7000	benchmark_suitable set_partitioning cardinality invariant_knapsack mixed_binary
supportcase41	open	4725	2000	2725	28923	221321	Domenico Salvagnin	–	32.00076832127569*	precedence variable_bound mixed_binary

Reference

No bibliographic information available