neos-885524: Instance-to-Instance Comparison Results

Type: Instance
Submitter: NEOS Server Submission
Description: Instance coming from the NEOS Server with unknown application
MIPLIB Entry

Parent Instance (neos-885524)

All other instances below were be compared against this "query" instance.

neos-885524 Raw neos-885524 Decomposed neos-885524 Composite of MIC top 5 neos-885524 Composite of MIPLIB top 5 neos-885524 Model Group Composite
Raw This is the CCM image before the decomposition procedure has been applied.
Decomposed This is the CCM image after a decomposition procedure has been applied. This is the image used by the MIC's image-based comparisons for this query instance.
Composite of MIC Top 5 Composite of the five decomposed CCM images from the MIC Top 5.
Composite of MIPLIB Top 5 Composite of the five decomposed CCM images from the MIPLIB Top 5.
Model Group Composite Image Composite of the decomposed CCM images for every instance in the same model group as this query.

MIC Top 5 Instances

These are the 5 decomposed CCM images that are most similar to decomposed CCM image for the the query instance, according to the ISS metric.

Decomposed These decomposed images were created by GCG.
eil33-2 decomposed pythago7825 decomposed iis-hc-cov decomposed pythago7824 decomposed f2gap801600 decomposed
Name eil33-2 [MIPLIB] pythago7825 [MIPLIB] iis-hc-cov [MIPLIB] pythago7824 [MIPLIB] f2gap801600 [MIPLIB]
Rank / ISS The image-based structural similarity (ISS) metric measures the Euclidean distance between the image-based feature vectors for the query instance and all other instances. A smaller ISS value indicates greater similarity.
1 / 0.841 2 / 0.867 3 / 0.875 4 / 0.908 5 / 0.935
Raw These images represent the CCM images in their raw forms (before any decomposition was applied) for the MIC top 5.
eil33-2 raw pythago7825 raw iis-hc-cov raw pythago7824 raw f2gap801600 raw

MIPLIB Top 5 Instances

These are the 5 instances that are most closely related to the query instance, according to the instance statistic-based similarity measure employed by MIPLIB 2017

Decomposed These decomposed images were created by GCG.
eil33-2 decomposed mod008inf decomposed nsrand-ipx decomposed n2seq36f decomposed bppc6-06 decomposed
Name eil33-2 [MIPLIB] mod008inf [MIPLIB] nsrand-ipx [MIPLIB] n2seq36f [MIPLIB] bppc6-06 [MIPLIB]
Rank / ISS The image-based structural similarity (ISS) metric measures the Euclidean distance between the image-based feature vectors for the query instance and all model groups. A smaller ISS value indicates greater similarity.
1 / 0.841 379 / 2.089 398 / 2.105 868 / 2.357 990 / 2.542
Raw These images represent the CCM images in their raw forms (before any decomposition was applied) for the MIPLIB top 5.
eil33-2 raw mod008inf raw nsrand-ipx raw n2seq36f raw bppc6-06 raw

Instance Summary

The table below contains summary information for neos-885524, the five most similar instances to neos-885524 according to the MIC, and the five most similar instances to neos-885524 according to MIPLIB 2017.

INSTANCE SUBMITTER DESCRIPTION ISS RANK
Parent Instance neos-885524 [MIPLIB] NEOS Server Submission Instance coming from the NEOS Server with unknown application 0.000000 -
MIC Top 5 eil33-2 [MIPLIB] J. Linderoth Set partitioning problem approximation for capicated vehicle routing problem instance from TSPLIB 0.840779 1
pythago7825 [MIPLIB] Felix J. L. Willamowski 2-coloring of Pythagorean triples 0.867495 2
iis-hc-cov [MIPLIB] Marc Pfetsch 23 "middlehard" Set-Covering Instances for MIPLIB: they have a small number of variables compared to the number of constraints and CPLEX 12.1 needs about one hour to solve them.For more information, have a look into the readme file which explains how the instances can be created. 0.875384 3
pythago7824 [MIPLIB] Felix J. L. Willamowski 2-coloring of Pythagorean triples 0.907774 4
f2gap801600 [MIPLIB] Salim Haddadi Restrictions of well-known hard generalized assignment problem instances (D10400,D20400,D40400,D15900,D30900,D60900,D201600,D401600,D801600) 0.934791 5
MIPLIB Top 5 eil33-2 [MIPLIB] J. Linderoth Set partitioning problem approximation for capicated vehicle routing problem instance from TSPLIB 0.840779 1
mod008inf [MIPLIB] MIPLIB submission pool Imported from the MIPLIB2010 submissions. 2.088711 379
nsrand-ipx [MIPLIB] MIPLIB submission pool Imported from the MIPLIB2010 submissions. 2.105338 398
n2seq36f [MIPLIB] R. Meirich Static line planning models on the Dutch IC network 2.357451 868
bppc6-06 [MIPLIB] Manuel Iori The models that we attach solve the "bar-relaxation", also known as the "Bin Packing Problem with Contiguity" or the "P||Cmax with contiguity". This is one of the most interesting relaxations for two dimensional cutting and packing problems. Its solution by means of an ILP software is the bottleneck of the primal decomposition methods that we attempted in the paper cited below. In detail, the files correspond to model (12)-(15) in the paper, applied to the instances of the Classes 4, 6 and 8 by Martello and Vigo (Management Science, 1998). 2.541705 990


neos-885524: Instance-to-Model Comparison Results

Model Group Assignment from MIPLIB: neos-pseudoapplication-100
Assigned Model Group Rank/ISS in the MIC: 159 / 2.780

MIC Top 5 Model Groups

These are the 5 model group composite (MGC) images that are most similar to the decomposed CCM image for the query instance, according to the ISS metric.

These are model group composite (MGC) images for the MIC top 5 model groups.
Model group: 2hopcds Model group: generated Model group: f2gap Model group: independentset Model group: neos-pseudoapplication-101
Name 2hopcds generated f2gap independentset neos-pseudoapplication-101
Rank / ISS The image-based structural similarity (ISS) metric measures the Euclidean distance between the image-based feature vectors for the query instance and all other instances. A smaller ISS value indicates greater similarity.
1 / 1.144 2 / 1.192 3 / 1.207 4 / 1.214 5 / 1.229

Model Group Summary

The table below contains summary information for the five most similar model groups to neos-885524 according to the MIC.

MODEL GROUP SUBMITTER DESCRIPTION ISS RANK
MIC Top 5 2hopcds Austin Buchanan A problem in wireless networks. The objective is to select a minimum number of relay nodes so that any two nonadjacent nodes can communicate by way of the chosen relay nodes in at most s hops, where s is a problem input. The 2-hop case of this problem can be formulated as a set cover/hitting set problem with n binary variables and n^2 constraints: _{ k N(i) N(j) } x_k 1 for nonadjacent node pairs {i,j}. Despite the formulation's simplicity, models with as few as 120 variables are left unsolved after one hour using Gurobi 7.0.2. 1.143737 1
generated Simon Bowly Randomly generated integer and binary programming models. These results are part of an early phase of work aimed at generating diverse and challenging MIP models for experimental testing. We have aimed to produce small integer and binary programming models which are reasonably difficult to solve and have varied structure, eliciting a range of behaviour in state of the art algorithms. 1.191837 2
f2gap Salim Haddadi Restrictions of well-known hard generalized assignment problem models (D10400,D20400,D40400,D15900,D30900,D60900,D201600,D401600,D801600) 1.207202 3
independentset Toni Sorrell These models are based on Neil Sloane's Challenge problems: Independent Sets in Graphs. 1.213916 4
neos-pseudoapplication-101 NEOS Server Submission Model coming from the NEOS Server with unknown application. Infeasibility claimed by CPLEX 12.6 and CPLEX 12.6.1 with extreme numerical caution emphasi after 4 and 2 hours computation, respectively. 1.228911 5