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

Harald Schilly | 28718 | 50108 | 2.15978e-04 | easy | lectsched | 0 | lectsched-1.mps.gz |

University lecture scheduling instance

Imported from MIPLIB2010.

Detailed explanation of the following tables can be found here.

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

Variables | 28718 | 8869 |

Constraints | 50108 | 17465 |

Binaries | 28236 | 8671 |

Integers | 482 | 198 |

Continuous | 0 | 0 |

Implicit Integers | 0 | 0 |

Fixed Variables | 0 | 0 |

Nonzero Density | 0.000215978 | 0.000503063 |

Nonzeroes | 310792 | 77923 |

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

Total | 50108 | 17465 |

Empty | 0 | 0 |

Free | 0 | 0 |

Singleton | 2062 | 0 |

Aggregations | 6 | 2 |

Precedence | 71 | 45 |

Variable Bound | 138 | 2063 |

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 | 2666 | 874 |

Mixed Binary | 0 | 0 |

General Linear | 45165 | 14481 |

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 % | 100.0000 | 100.0000 | 100.0000 | 100.0000 | |

Variable % | 52.4747 | 52.4747 | 52.4747 | 52.4747 | |

Score | 0.475253 |

No solution available for lectsched-1 .

The following instances are most similar to lectsched-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.

```
@mastersthesis{Schilly2007,
author = {Harald Schilly},
language = {german},
school = {Universit{\"a}t Wien},
title = {Modellierung und {I}mplementation eines {V}orlesungsplaners},
type = {Diploma thesis},
year = {2007}
}
```

Last Update Nov 16, 2020 by Philipp Wellner

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