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

Jonathan Eckstein | 78084 | 97579 | 4.22004e-05 | open | nj | NA | nj1.mps.gz |

Electoral district design with various levels of symmetry breaking constraints.

Detailed explanation of the following tables can be found here.

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

Variables | 78084 | 78084 |

Constraints | 97579 | 97579 |

Binaries | 14280 | 14280 |

Integers | 0 | 0 |

Continuous | 63804 | 63804 |

Implicit Integers | 0 | 0 |

Fixed Variables | 0 | 0 |

Nonzero Density | 4.22004e-05 | 4.22004e-05 |

Nonzeroes | 321540 | 321540 |

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

Total | 97579 | 97579 |

Empty | 0 | 0 |

Free | 0 | 0 |

Singleton | 0 | 0 |

Aggregations | 0 | 0 |

Precedence | 0 | 0 |

Variable Bound | 52056 | 52056 |

Set Partitioning | 607 | 607 |

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 | 44916 | 44916 |

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 | 1.113943 | ||||

Constraint % | 8.28149 | 8.28149 | 8.28149 | 8.28149 | |

Variable % | 8.33333 | 8.33333 | 8.33333 | 8.33333 | |

Score | 0.910964 |

No solution available for nj1 .

The following instances are most similar to nj1 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 |
---|---|---|---|---|---|---|---|---|---|---|

nj2 | 85224 | 14280 | 0 | 70944 | 118975 | 364332 | Jonathan Eckstein | nj | open | |

nj3 | 85224 | 14280 | 0 | 70944 | 118986 | 377422 | Jonathan Eckstein | nj | open | |

bharat | 590519 | 122614 | 0 | 467905 | 1299953 | 3565460 | Gavin Goodall | – | open | 4193333.93287* |

neos-5273874-yomtsa | 136971 | 232 | 0 | 136739 | 486492 | 1955350 | Hans Mittelmann | neos-pseudoapplication-19 | open | 128.759451488657* |

maxgasflow | 7437 | 2456 | 0 | 4981 | 7160 | 19717 | G. Gamrath | – | easy | -44565819157.51 |

`No bibliographic information available`

Last Update Jan 18, 2019 by Gregor Hendel

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