ofi

numerics aggregations precedence variable_bound set_partitioning mixed_binary

Submitter Variables Constraints Density Status Group Objective MPS File
Luigi Poderico 420434 422587 9.99499e-06 easy 6155380000 ofi.mps.gz

Natural gas supply portfolio optimization

Imported from MIPLIB2010.

Instance Statistics

Detailed explanation of the following tables can be found here.

Size Related Properties
Original Presolved
Variables 420434 319430
Constraints 422587 161201
Binaries 29705 8546
Integers 0 0
Continuous 390729 310884
Implicit Integers 0 0
Fixed Variables 11073 0
Nonzero Density 9.99499e-06 2.03990e-05
Nonzeroes 1775810 1050390
Constraint Classification Properties
Original Presolved
Total 422587 161201
Empty 0 0
Free 0 0
Singleton 195016 0
Aggregations 40676 36742
Precedence 9014 5899
Variable Bound 51175 34395
Set Partitioning 3836 140
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 122870 84025
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
Constraint %
Variable %
Score

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 6155384460 2e-07 0.0019489 5.3e-06 - 2018-10-10 Solution found during MIPLIB2017 problem selection.

Similar instances in collection

The following instances are most similar to ofi 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 Integers Continuous Constraints Nonz. Submitter Group Objective Tags
ofi2 open 420434 18632 11073 390729 422587 1775810 Luigi Poderico 6153920483.9* numerics aggregations precedence variable_bound set_partitioning set_covering binpacking knapsack mixed_binary
ta2-UUE easy 9241 1188 0 8053 2687 26533 MIPLIB submission pool network_design 37871728.59 numerics aggregations set_packing mixed_binary
neos-3355120-tarago open 7800 4700 3100 0 86633 265500 Hans Mittelmann neos-pseudoapplication-52 -11016684.60923* decomposition numerics aggregations precedence variable_bound set_partitioning set_packing cardinality binpacking integer_knapsack mixed_binary general_linear
neos-799711 easy 41998 910 0 41088 59218 147164 NEOS Server Submission neos-pseudoapplication-25 -11170211.734 numerics aggregations precedence variable_bound set_partitioning set_packing cardinality mixed_binary
ta1-UUM easy 2288 0 605 1683 439 5654 MIPLIB submission pool network_design 7518328.2 decomposition numerics aggregations mixed_binary general_linear

Reference

No bibliographic information available

Last Update Okt 02, 2019 by Gregor Hendel
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