Submitter | Variables | Constraints | Density | Status | Group | Objective | MPS File |
---|---|---|---|---|---|---|---|

A. Bley | 2515 | 2257 | 3.67507e-03 | easy | bley_x | 1051266.38 | bley_xs2.mps.gz |

Min-cost network dimensioning problem with finite sets of link capacities and unsplittable flow routing

Imported from the MIPLIB2010 submissions.

Detailed explanation of the following tables can be found here.

Original | Presolved | |
---|---|---|

Variables | 2515 | 2373 |

Constraints | 2257 | 1833 |

Binaries | 1632 | 1580 |

Integers | 883 | 793 |

Continuous | 0 | 0 |

Implicit Integers | 0 | 0 |

Fixed Variables | 0 | 0 |

Nonzero Density | 0.00367507 | 0.00415752 |

Nonzeroes | 20861 | 18084 |

Original | Presolved | |
---|---|---|

Total | 2257 | 1833 |

Empty | 19 | 0 |

Free | 0 | 0 |

Singleton | 54 | 0 |

Aggregations | 53 | 52 |

Precedence | 0 | 0 |

Variable Bound | 30 | 5 |

Set Partitioning | 45 | 45 |

Set Packing | 0 | 191 |

Set Covering | 89 | 99 |

Cardinality | 0 | 0 |

Invariant Knapsack | 0 | 32 |

Equation Knapsack | 0 | 0 |

Bin Packing | 0 | 0 |

Knapsack | 318 | 184 |

Integer Knapsack | 0 | 0 |

Mixed Binary | 403 | 56 |

General Linear | 1246 | 1169 |

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 | 2.348305 | ||||

Constraint % | 0.0545554 | 0.104687 | 0.0545554 | 7.80142 | |

Variable % | 0.0824742 | 0.294418 | 0.2474230 | 6.80412 | |

Score | 0.226580 |

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 | 1051266 | 1051266 | 0 | 0 | 0 | - | 2018-10-11 | Solution found during MIPLIB2017 problem selection. |

The following instances are most similar to bley_xs2 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.

`No bibliographic information available`

Last Update Nov 16, 2020 by Philipp Wellner

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