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

J. Walser | 10772 | 12050 | 3.53529e-04 | easy | 30_70 | 9 | 30_70_45_05_100.mps.gz |

Geographic radar station allocation

Imported from the MIPLIB2010 submissions.

Detailed explanation of the following tables can be found here.

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

Variables | 10772 | 10768 |

Constraints | 12050 | 12048 |

Binaries | 10771 | 10768 |

Integers | 0 | 0 |

Continuous | 1 | 0 |

Implicit Integers | 0 | 0 |

Fixed Variables | 1 | 0 |

Nonzero Density | 0.000353529 | 0.000353688 |

Nonzeroes | 45889 | 45885 |

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

Total | 12050 | 12048 |

Empty | 0 | 0 |

Free | 0 | 0 |

Singleton | 0 | 0 |

Aggregations | 0 | 0 |

Precedence | 10167 | 10165 |

Variable Bound | 31 | 31 |

Set Partitioning | 0 | 0 |

Set Packing | 0 | 0 |

Set Covering | 49 | 49 |

Cardinality | 0 | 0 |

Invariant Knapsack | 0 | 0 |

Equation Knapsack | 0 | 0 |

Bin Packing | 0 | 0 |

Knapsack | 0 | 0 |

Integer Knapsack | 0 | 0 |

Mixed Binary | 1803 | 1803 |

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 | 2.707570 | ||||

Constraint % | 0.0083000 | 0.167063 | 0.199203 | 1.67663 | |

Variable % | 0.0185718 | 0.196299 | 0.232148 | 1.92218 | |

Score | 0.847813 |

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 | 9 | 9 | 0 | 0 | 0 | - | 2018-10-11 | Solution found during MIPLIB2017 problem selection. |

The following instances are most similar to 30_70_45_05_100 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 Jun 24, 2020 by Gabriel Kressin

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