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

Double-Click SAS | 11612 | 1803 | 9.09481e-03 | hard | – | 6609253 | dolom1.mps.gz |

Crew scheduling instance. Solved with ParaSCIP with SCIP 3.0.1 linked to CPLEX 12.5 as an LP solver on HLRN III with 12288 cores in two runs First run found a feasible solution whose objective function value is 6615265.0000. Giving the feasible solution, the second run solved the instance in 13684.7671 sec.

Imported from MIPLIB2010.

Detailed explanation of the following tables can be found here.

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

Variables | 11612 | 11521 |

Constraints | 1803 | 1802 |

Binaries | 9720 | 9720 |

Integers | 0 | 1693 |

Continuous | 1892 | 108 |

Implicit Integers | 0 | 1693 |

Fixed Variables | 0 | 0 |

Nonzero Density | 0.00909481 | 0.00915979 |

Nonzeroes | 190413 | 190165 |

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

Total | 1803 | 1802 |

Empty | 0 | 0 |

Free | 0 | 0 |

Singleton | 0 | 0 |

Aggregations | 0 | 0 |

Precedence | 0 | 0 |

Variable Bound | 0 | 0 |

Set Partitioning | 0 | 0 |

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 | 1803 | 108 |

General Linear | 0 | 1694 |

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 | 0.301030 | ||||

Constraint % | 5.99334 | 5.99334 | 5.99334 | 5.99334 | |

Variable % | 85.30510 | 85.30510 | 85.30510 | 85.30510 | |

Score | 0.008807 |

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 | 6644479 | 6644479 | 0 | 0 | 0 | - | 2018-10-11 | Solution found during MIPLIB2017 problem selection. |

The following instances are most similar to dolom1 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 | Variables | Binaries | Integers | Continuous | Constraints | Nonz. | Submitter | Group | Status | Objective |
---|---|---|---|---|---|---|---|---|---|---|

trento1 | 7687 | 6415 | 0 | 1272 | 1265 | 93571 | MIPLIB submission pool | – | easy | 5189487 |

nsr8k | 38356 | 32040 | 0 | 6316 | 6284 | 371608 | MIPLIB submission pool | – | open | 18507854.9999999* |

biella1 | 7328 | 6110 | 0 | 1218 | 1203 | 71489 | Double-Click SAS | – | easy | 3065005.78 |

dc1c | 10039 | 8380 | 0 | 1659 | 1649 | 121158 | Double-Click SAS | – | hard | 1767903.6501 |

siena1 | 13741 | 11775 | 0 | 1966 | 2220 | 258915 | Double-Click SAS | – | open | 10584965.7* |

```
@article{FischettiGloverLodi2005,
author = {M. Fischetti and F. Glover and A. Lodi},
journal = {Mathematical Programming},
pages = {91--104},
title = {The feasibility pump},
volume = {104},
year = {2005}
}
@article{FischettiLodi2003,
author = {Fischetti, Matteo and Lodi, Andrea},
issn = {0025-5610},
issue = {1},
journal = {Mathematical Programming},
keyword = {Mathematics and Statistics},
pages = {23-47},
publisher = {Springer},
title = {Local branching},
volume = {98},
year = {2003}
}
```

Last Update Jan 18, 2019 by Gregor Hendel

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