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

Emilie Danna | 2480 | 4926 | 1.49593e-03 | easy | app | -3 | app1-1.mps.gz |

The archive contains 5 instances coming from 3 applications.app1 is interesting because the continuous variables (w) drive the model.Some solvers have numerical problems on app2 models: some solutions found violate the constraints by a small amount.app2 and app3 models are easy to solve. But they don’t solve fast enough for the time limit I have in mind so I’d like to propose them for inclusion in MIPLIB.

Imported from the MIPLIB2010 submissions.

Detailed explanation of the following tables can be found here.

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

Variables | 2480 | 2477 |

Constraints | 4926 | 4873 |

Binaries | 1225 | 1224 |

Integers | 0 | 0 |

Continuous | 1255 | 1253 |

Implicit Integers | 0 | 0 |

Fixed Variables | 0 | 0 |

Nonzero Density | 0.00149593 | 0.00149332 |

Nonzeroes | 18275 | 18025 |

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

Total | 4926 | 4873 |

Empty | 0 | 0 |

Free | 0 | 0 |

Singleton | 1 | 0 |

Aggregations | 0 | 0 |

Precedence | 1225 | 1176 |

Variable Bound | 0 | 96 |

Set Partitioning | 0 | 0 |

Set Packing | 0 | 0 |

Set Covering | 25 | 24 |

Cardinality | 0 | 0 |

Invariant Knapsack | 0 | 0 |

Equation Knapsack | 0 | 0 |

Bin Packing | 0 | 0 |

Knapsack | 0 | 0 |

Integer Knapsack | 0 | 0 |

Mixed Binary | 3675 | 3577 |

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 | 1.869232 | ||||

Constraint % | 0.0205212 | 1.02578 | 0.0410425 | 3.03714 | |

Variable % | 0.0807103 | 1.36931 | 0.0807103 | 3.99516 | |

Score | 0.719682 |

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 | -3 | -3 | 0 | 0 | 0 | - | 2018-10-12 | Solution found during MIPLIB2017 problem selection. |

The following instances are most similar to app1-1 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 |
---|---|---|---|---|---|---|---|---|---|---|---|

app1-2 | easy | 26871 | 13300 | 0 | 13571 | 53467 | 199175 | Emilie Danna | app | -41 | benchmark decomposition benchmark_suitable precedence variable_bound set_covering mixed_binary |

loopha13 | easy | 19356 | 18150 | 0 | 1206 | 23758 | 41809 | Hamideh | – | 6.40233 | benchmark_suitable aggregations precedence variable_bound invariant_knapsack mixed_binary |

rocII-5-11 | easy | 11523 | 11341 | 0 | 182 | 26897 | 303291 | Joerg Rambau | rocI | -6.675504731538 | benchmark benchmark_suitable aggregations precedence variable_bound set_partitioning set_packing mixed_binary |

fhnw-schedule-pairb200 | open | 40200 | 40000 | 0 | 200 | 99554 | 298554 | Simon Felix | schedule | -19.24094384259708* | precedence variable_bound invariant_knapsack mixed_binary |

neos-1445532 | easy | 14406 | 1999 | 0 | 12407 | 1924 | 27736 | NEOS Server Submission | neos-pseudoapplication-88 | -17041 | aggregations invariant_knapsack mixed_binary |

`No bibliographic information available`

Last Update Jun 24, 2020 by Gabriel Kressin

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