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

Rob Pratt | 975 | 78 | 3.84615e-02 | easy | -- | Infeasible | ponderthis0517-inf.mps.gz |

Infeasible version of IBM Ponder This problem (with 52 characters and no spaces) from May 2017: https://www.research.ibm.com/haifa/ponderthis/challenges/May2017.html

Detailed explanation of the following tables can be found here.

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

Variables | 975 | 975 |

Constraints | 78 | 78 |

Binaries | 975 | 975 |

Integers | 0 | 0 |

Continuous | 0 | 0 |

Implicit Integers | 0 | 0 |

Fixed Variables | 0 | 0 |

Nonzero Density | 0.0384615 | 0.0384615 |

Nonzeroes | 2925 | 2925 |

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

Total | 78 | 78 |

Empty | 0 | 0 |

Free | 0 | 0 |

Singleton | 0 | 0 |

Aggregations | 0 | 0 |

Precedence | 0 | 0 |

Variable Bound | 0 | 0 |

Set Partitioning | 26 | 26 |

Set Packing | 52 | 52 |

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 | 0 | 0 |

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 | 1.431364 | ||||

Constraint % | 1.28205 | 1.28205 | 1.28205 | 1.28205 | |

Variable % | 2.56410 | 3.84615 | 3.84615 | 5.12821 | |

Score | 0.320513 |

No solution available for ponderthis0517-inf .

The following instances are most similar to ponderthis0517-inf 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 |
---|---|---|---|---|---|---|---|---|---|---|---|

neos-3226448-wkra | easy | 10012 | 10012 | 0 | 0 | 2208 | 40048 | Jeff Linderoth | neos-pseudoapplication-103 | 0 | binary feasibility benchmark_suitable set_partitioning |

neos-4382714-ruvuma | easy | 6562 | 6561 | 0 | 1 | 3645 | 32805 | Hans Mittelmann | neos-pseudoapplication-103 | Infeasible | infeasible binary feasibility benchmark_suitable set_partitioning |

10teams | easy | 2025 | 1800 | 0 | 225 | 230 | 12150 | MIPLIB submission pool | -- | 924 | binary set_partitioning set_packing invariant_knapsack |

neos-1516309 | easy | 4500 | 4500 | 0 | 0 | 489 | 30400 | NEOS Server Submission | neos-pseudoapplication-26 | 35954 | binary decomposition set_packing set_covering knapsack |

neos-1599274 | easy | 4500 | 4500 | 0 | 0 | 1237 | 46800 | NEOS Server Submission | neos-pseudoapplication-26 | 32075.6 | binary decomposition set_packing set_covering knapsack |

`No bibliographic information available`

Last Update Nov 16, 2020 by Philipp Wellner

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