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.

Detailed explanation of the following tables can be found here.

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 |

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 |

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

Decomposed structure of original problem (dec-file)

Decomposed structure after trivial presolving (dec-file)

value | min | median | mean | max | |
---|---|---|---|---|---|

Components | |||||

Constraint % | |||||

Variable % | |||||

Score |

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. |

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 |

`No bibliographic information available`

Last Update Jun 24, 2019 by Gregor Hendel

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