Submitter Variables Constraints Density Status Group Objective MPS File
Alexandra M. Newman 67519 49916 5.01809e-04 open -1256561010.473 moj-mining.mps.gz

open pit mine production scheduling problem with inventory

Instance Statistics

Detailed explanation of the following tables can be found here.

Size Related Properties
Original Presolved
Variables 67519 67238
Constraints 49916 49664
Binaries 5171 5136
Integers 0 0
Continuous 62348 62102
Implicit Integers 0 0
Fixed Variables 0 0
Nonzero Density 0.000501809 0.000505192
Nonzeroes 1691240 1686990
Constraint Classification Properties
Original Presolved
Total 49916 49664
Empty 0 0
Free 0 0
Singleton 0 0
Aggregations 0 0
Precedence 4782 4749
Variable Bound 0 0
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 0 0
Mixed Binary 45134 44915
General Linear 0 0
Indicator 0 0

Structure

Available nonzero structure and decomposition information. Further information can be found here.

value min median mean max
Components 2.365488
Constraint % 0.00201 0.0413951 0.0463112 0.0503383
Variable % 0.00297 0.0320629 0.0356941 0.0386686
Score 0.095589

Best Known Solution(s)

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 -1256561010 -1256561010 0 0 0.0002281 - 2018-10-12 Solution found during MIPLIB2017 problem selection.

Similar instances in collection

The following instances are most similar to moj-mining 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
neos-2987310-joes 27837 3051 0 24786 29015 580291 Jeff Linderoth neos-pseudoapplication-82 easy -607702988.3
neos-2987202-jeir 146700 9045 0 137655 120209 1979660 Jeff Linderoth neos-pseudoapplication-82 hard -1836136351.2
gasprod2-2 29568 6826 0 22742 72728 280740 Andrew Stamps gasprod easy 1375631.6625
gasprod2-1 29568 7389 0 22179 73448 282846 Andrew Stamps gasprod easy 1628548.2968
gasprod1-1 10920 4053 0 6867 27695 201348 Andrew Stamps gasprod open 291.5247315909*

Reference

@article{moreno2016linear,
  title={Linear models for stockpiling in open-pit mine production scheduling problems},
  author={Moreno, Eduardo and Rezakhah, Mojtaba and Newman, Alexandra and Ferreira, Felipe},
  journal={European Journal of Operational Research},
  year={2016},
  publisher={Elsevier}
}

Last Update Nov 09, 2018 by Gregor Hendel
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