irish-electricity

benchmark benchmark_suitable precedence variable_bound invariant_knapsack binpacking knapsack mixed_binary

Submitter	Variables	Constraints	Density	Status	Group	Objective	MPS File
Paula Carroll	61728	104259	8.13054e-05	easy	–	3723497.591396	irish-electricity.mps.gz

Unit Commitment - Irish Test systems We submit a sample Unit Commitment test instance based on an Irish case study. We include a readme file, a solution file, and additional data so that users may generate further UC test instances.

Location of instance in collection

Instance Statistics

Detailed explanation of the following tables can be found here.

Size Related Properties
	Original	Presolved
Variables	61728	52735
Constraints	104259	82917
Binaries	9888	9286
Integers	0	0
Continuous	51840	43449
Implicit Integers	0	0
Fixed Variables	0	0
Nonzero Density	8.13054e-05	1.07359e-04
Nonzeroes	523257	469443

Constraint Classification Properties
	Original	Presolved
Total	104259	82917
Empty	0	0
Free	0	0
Singleton	16041	0
Aggregations	0	0
Precedence	5216	8119
Variable Bound	20624	18144
Set Partitioning	0	0
Set Packing	0	0
Set Covering	9114	0
Cardinality	4	0
Invariant Knapsack	0	9527
Equation Knapsack	0	0
Bin Packing	279	1220
Knapsack	0	5483
Integer Knapsack	0	0
Mixed Binary	52981	40424
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	2.429752
Constraint %		0.00121	0.191223	0.00362	2.069540
Variable %		0.00379	0.145639	0.00569	0.910039
Score	0.508349

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	3723498	3723498	0	0	0	-	2018-10-13	Solution found during MIPLIB2017 problem selection.

Similar instances in collection

The following instances are most similar to irish-electricity 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
uccase7	hard	33020	7224	25796	47132	335644	Daniel Espinoza	uccase	26834.28427331005	aggregations precedence variable_bound set_partitioning invariant_knapsack binpacking knapsack mixed_binary
uccase9	easy	33242	8064	25178	49565	332316	Daniel Espinoza	uccase	10993.131409	benchmark benchmark_suitable aggregations precedence variable_bound set_partitioning invariant_knapsack binpacking knapsack mixed_binary
uccase8	easy	37413	9576	27837	53709	214625	Daniel Espinoza	uccase	11167.74532	benchmark_suitable aggregations variable_bound set_partitioning invariant_knapsack binpacking knapsack mixed_binary
uccase10	open	110818	16800	94018	196498	787045	Daniel Espinoza	uccase	39133.6229762502*	aggregations precedence variable_bound mixed_binary
neos-4264598-oueme	open	54550	13370	41180	54714	191146	Jeff Linderoth	neos-pseudoapplication-57	6038453.676499*	numerics aggregations precedence variable_bound invariant_knapsack mixed_binary general_linear

Reference

@CONFERENCE{Carroll_UC,
  author =       {Paula Carroll and Damian Flynn and Bernard Fortz and Alex Melhorn},
  title =        {{Sub-hour Unit Commitment MILP Model with Benchmark Problem Instances}},
  booktitle =    {Computational Science and Its Applications – ICCSA 2017},
  year =         {2017},
  editor =       {Osvaldo Gervasi and Beniamino Murgante and Sanjay Misra and Giuseppe Borruso and Carmelo M. Torre and Ana Maria A.C. Rocha
and  David Taniar and Bernady O. Apduhan and Elena Stankova and Alfredo Cuzzocrea },
  volume =       {10405},
  pages  =       {--},
  address =      {Trieste, Italy},
  month =        {July},
  publisher =    {Lecture Notes in Computer Science (LNCS)},
  doi = {10.1007/978-3-319-62395-5},
  note = { to appear},
}