Submitter Variables Constraints Density Status Group Objective MPS File
Irv Lustig 207665 242244 2.04387e-05 open seqsolve NA seqsolve2short4288.mps.gz

The 3 problems in this group (seqsolve1–seqsolve3) represent a hierarchical optimization process, which is derived from a customer problem for assigning people to sites into blocks of time on days of the week. The specialty of this submission is that the best known solution for seqsolveX can be used as a MIP start for seqsolveX+1. For a description of the connections between the problems, please refer to the README.txt contained in the model data for this submission, which also includes MIP start files and a Gurobi log file.

Instance Statistics

Detailed explanation of the following tables can be found here.

Size Related Properties
Original Presolved
Variables 207665 174335
Constraints 242244 199219
Binaries 123834 97763
Integers 82835 75576
Continuous 996 996
Implicit Integers 0 0
Fixed Variables 0 0
Nonzero Density 2.04387e-05 2.52499e-05
Nonzeroes 1028180 876949
Constraint Classification Properties
Original Presolved
Total 242244 199219
Empty 0 0
Free 0 0
Singleton 149 0
Aggregations 0 121
Precedence 12381 0
Variable Bound 178200 151260
Set Partitioning 0 0
Set Packing 151 56
Set Covering 0 0
Cardinality 0 0
Invariant Knapsack 282 251
Equation Knapsack 0 0
Bin Packing 31442 28976
Knapsack 16222 15398
Integer Knapsack 2918 2779
Mixed Binary 33 1
General Linear 466 377
Indicator 0 0

Structure

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

value min median mean max
Components
Constraint %
Variable %
Score

Best Known Solution(s)

No solution available for seqsolve2short4288 .

Similar instances in collection

The following instances are most similar to seqsolve2short4288 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
seqsolve1 207665 123834 82835 996 242243 1027680 Irv Lustig seqsolve open 4279*
seqsolve3short4288excess384 207665 123834 82835 996 242245 1028680 Irv Lustig seqsolve open
uccase8 37413 9576 0 27837 53709 214625 Daniel Espinoza uccase easy 11167.74532
fhnw-binschedule2 30973 30504 468 1 6503 134640 Simon Felix fhnw-bin open 2428*
fhnw-binschedule0 319319 316270 3048 1 58085 1382970 Simon Felix fhnw-bin open 16642*

Reference

No bibliographic information available

Last Update Nov 09, 2018 by Gregor Hendel
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