Submitter Variables Constraints Density Status Group Objective MPS File
Andreas Bärmann 70116 81558 2.84854e-04 open 1330.041 zeil.mps.gz

A model that computes an optimal adaptation of a given timetable draft for a small portion of the German railway network. The aim is to shift the planned departure times of the trains slightly, such that the maximum power consumption (averaed over 15-minute intervalls of the planning horizon) is as small as possible.

Instance Statistics

Detailed explanation of the following tables can be found here.

Size Related Properties
Original Presolved
Variables 70116 66940
Constraints 81558 71271
Binaries 5314 4551
Integers 0 0
Continuous 64802 62389
Implicit Integers 0 0
Fixed Variables 0 0
Nonzero Density 0.000284854 0.000295156
Nonzeroes 1628940 1408150
Constraint Classification Properties
Original Presolved
Total 81558 71271
Empty 0 0
Free 0 0
Singleton 2928 0
Aggregations 0 0
Precedence 15922 8813
Variable Bound 120 85
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 62588 62373
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 0.602060
Constraint % 0.0238526 4.16158 0.297456 12.16340
Variable % 0.0177245 2.28252 0.187584 6.64225
Score 0.116763

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 1330.041 1330.041 0 0 0 - 2018-10-12 Solution found during MIPLIB2017 problem selection.

Similar instances in collection

The following instances are most similar to zeil 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-1420546 26055 1125 0 24930 12671 67959 NEOS Server Submission neos-pseudoapplication-9 open 23029.181298*
neos-1420790 4926 540 0 4386 2310 12720 NEOS Server Submission neos-pseudoapplication-9 open 3124.6860016*
germany50-UUM 6971 0 88 6883 2088 20737 MIPLIB submission pool network_design open 628920*
uccase10 110818 16800 0 94018 196498 787045 Daniel Espinoza uccase open 39134.295915*
loopha13 19356 18150 0 1206 23758 41809 Hamideh easy 6.40233

Reference

No bibliographic information available

Last Update Nov 09, 2018 by Gregor Hendel
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