rmine25

binary precedence mixed_binary

Submitter Variables Constraints Density Status Group Objective MPS File
Daniel Espinoza 326599 2953849 7.44539e-06 open rmine -15541.66928749976* rmine25.mps.gz

Instance coming from open pit mining over a cube considering multiple time periods and two knapsack constraints per period Imported from MIPLIB2010.

Location of instance in collection

Location of instance in collection

Instance Statistics

Detailed explanation of the following tables can be found here.

Size Related Properties
Original Presolved
Variables 326599 326599
Constraints 2953849 2953849
Binaries 326599 326599
Integers 0 0
Continuous 0 0
Implicit Integers 0 0
Fixed Variables 0 0
Nonzero Density 7.44539e-06 7.44539e-06
Nonzeroes 7182740 7182740
Constraint Classification Properties
Original Presolved
Total 2953849 2953849
Empty 0 0
Free 0 0
Singleton 0 0
Aggregations 0 0
Precedence 2953799 2953799
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 50 50
General Linear 0 0
Indicator 0 0

Structure

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

Nonzero entries of original problem

Nonzero entries of original problem

Matrix after trivial presolving

Nonzero entries after trivial presolving

Decomposed structure of original problem

Decomposed structure of original problem (dec-file)

Decomposed structure after trivial presolving

Decomposed structure after trivial presolving (dec-file)

value min median mean max
Components
Constraint %
Variable %
Score

Best Known Solution(s)

Find solutions below. Download the archive containing all solutions from the Download page.

## Warning in lapply(df["exactobjval"], as.numeric): NAs introduced by coercion
ID Objective Exact Int. Viol Cons. Viol Obj. Viol Submitter Date Description
6 -15541.669 -15541.669 8.6e-06 0 0 Edward Rothberg 2021-06-15
5 -15536.555 0.0e+00 0 0 Edward Rothberg 2020-05-15 Obtained with Gurobi 9.0 using the solution improvement heuristic
4 -15450.443 0.0e+00 0 0 Edward Rothberg 2020-02-17 Obtained with Gurobi 9.0 using the solution improvement heuristic
3 -15291.610 0.0e+00 0 0 Edward Rothberg 2019-12-13 Obtained with Gurobi 9.0
2 -10831.506 0.0e+00 0 0 Robert Ashford and Alkis Vazacopoulus 2019-12-18 Found using ODH|CPlex
1 -2553.479 -2553.479 0.0e+00 0 0 - 2018-10-12 Solution found during MIPLIB2017 problem selection.

Similar instances in collection

The following instances are most similar to rmine25 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
rmine21 open 162547 162547 0 0 1441651 3514884 Daniel Espinoza rmine -10618.75083837232* binary precedence mixed_binary
rmine15 open 42438 42438 0 0 358395 879732 Daniel Espinoza rmine -5018.819990999996* binary precedence mixed_binary
rmine13 open 23980 23980 0 0 197155 485784 Daniel Espinoza rmine -3495.3706624382535* binary precedence mixed_binary
opm2-z12-s8 hard 10800 10800 0 0 319508 725377 Daniel Espinoza opm2 -58540 binary precedence knapsack
rmine11 open 12292 12292 0 0 97389 241240 Daniel Espinoza rmine -2508.404144* binary precedence mixed_binary

Reference

No bibliographic information available
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