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

He Renjie | 95637 | 51712 | 1.66046e-04 | easy | satellites | -25 | satellites4-25.mps.gz |

Ihe attachment is some instances generated from real life satelliteschedule problem data,these instances are easier comparable to real lifeproblem. The work is done by me and Alberto Ceselli from Univeristy ofMilano. I donnot know it is hard enough or not, if needs , I can generatemore difficult instances. Imported from the MIPLIB2010 submissions. Solved with COPT 7.0 using up to 12 threads in less than 30 minutes.

Detailed explanation of the following tables can be found here.

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

Variables | 95637 | 95594 |

Constraints | 51712 | 51712 |

Binaries | 93747 | 93746 |

Integers | 0 | 0 |

Continuous | 1890 | 1848 |

Implicit Integers | 0 | 0 |

Fixed Variables | 0 | 0 |

Nonzero Density | 0.000166046 | 0.000166111 |

Nonzeroes | 821192 | 821148 |

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

Total | 51712 | 51712 |

Empty | 0 | 0 |

Free | 0 | 0 |

Singleton | 0 | 0 |

Aggregations | 1333 | 1333 |

Precedence | 31 | 31 |

Variable Bound | 0 | 0 |

Set Partitioning | 30504 | 30504 |

Set Packing | 117 | 117 |

Set Covering | 0 | 0 |

Cardinality | 3906 | 3906 |

Invariant Knapsack | 10571 | 10571 |

Equation Knapsack | 0 | 0 |

Bin Packing | 0 | 0 |

Knapsack | 0 | 31 |

Integer Knapsack | 0 | 0 |

Mixed Binary | 5250 | 5219 |

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 | 3.006466 | ||||

Constraint % | 0.0019300 | 0.0581738 | 0.0599474 | 0.0599474 | |

Variable % | 0.0324288 | 0.0949745 | 0.0983325 | 0.0983325 | |

Score | 0.589311 |

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 | -25 | -25 | 0 | 0 | 0 | - | 2018-10-13 | Solution found during MIPLIB2017 problem selection. |

The following instances are most similar to satellites4-25 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`

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