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Backward Feature Elimination Cluster

"optimal" k according to silhoutte coefficient backward feature elimination to select the features that maximize the silhoutte coefficient Attempt 01: mix backward feature elimination +"optimal" clusters. The number of clusters is generated with the node "Random Number Generator" and each K iterates with the Backward Feature Elimination Attempt 02: mix backward feature elimination +"optimal" clusters. The number of clusters is generated manually and each K iterates with the Backward Feature Elimination Problem: for each K thesilhoutte coefficient isthe same, so it seemthat the BackwardFeature elimination isnot working in the way Iconstructed the loop asis using the samecolumns for each KFor example for K=3 thesilhoutte coef is thesame 0.7946 with thecolumn "I1" Mix backward feature elimination + "optimal" clusters AggregateOne row at a timelibrary(cluster.datasets)DatasetExtract QualityZ-Scoreon clusterAppendColumnsSelectedAppend ParameterNode 24Node 25Generate kwith a number ofrecords equalK x (number of columns in data)Sort k2233....99Number ktimes de numberof columnsthat can beremovedHighestSilhouette with k=3[I1] 1 variable 0.7946 Z-Scorelibrary(cluster.datasets)Datasetk2233....99One row at a timeon clusterExtract QualityNode 38AggregateNode 41Z-Scorelibrary(cluster.datasets)DatasetHighestSilhouettewith k=5[O2, I3, O3] 3 variables 0.7739 Node 46AggregateExtract QualityHighestSilhouettewith k=3ALL variables 0.3171 Node 50Z-Scorelibrary(cluster.datasets)Datasetk23..9One row at a timeAppend ParameterAppend ParameterHighestSilhouettewith k=3[I1] 1 variable 0.7946 AppendColumnsSelectedLoop End Table Row To VariableLoop Start (deprecated) R Source (Table) Row Filter Normalizer Backward FeatureElimination Merge Variables Variable to TableColumn (deprecated) k-Means SilhouetteCoefficient Random NumbersGenerator Sorter Metanode Sorter Normalizer R Source (Table) Table Creator Table Row To VariableLoop Start (deprecated) Backward FeatureElimination Row Filter SilhouetteCoefficient Loop End k-Means Normalizer R Source (Table) Backward FeatureElimination SilhouetteCoefficient Loop End Row Filter Sorter k-Means Normalizer R Source (Table) Table Creator Table Row To VariableLoop Start (deprecated) Variable to TableColumn (deprecated) Variable to TableColumn (deprecated) Sorter Merge Variables "optimal" k according to silhoutte coefficient backward feature elimination to select the features that maximize the silhoutte coefficient Attempt 01: mix backward feature elimination +"optimal" clusters. The number of clusters is generated with the node "Random Number Generator" and each K iterates with the Backward Feature Elimination Attempt 02: mix backward feature elimination +"optimal" clusters. The number of clusters is generated manually and each K iterates with the Backward Feature Elimination Problem: for each K thesilhoutte coefficient isthe same, so it seemthat the BackwardFeature elimination isnot working in the way Iconstructed the loop asis using the samecolumns for each KFor example for K=3 thesilhoutte coef is thesame 0.7946 with thecolumn "I1" Mix backward feature elimination + "optimal" clusters AggregateOne row at a timelibrary(cluster.datasets)DatasetExtract QualityZ-Scoreon clusterAppendColumnsSelectedAppend ParameterNode 24Node 25Generate kwith a number ofrecords equalK x (number of columns in data)Sort k2233....99Number ktimes de numberof columnsthat can beremovedHighestSilhouette with k=3[I1] 1 variable 0.7946 Z-Scorelibrary(cluster.datasets)Datasetk2233....99One row at a timeon clusterExtract QualityNode 38AggregateNode 41Z-Scorelibrary(cluster.datasets)DatasetHighestSilhouettewith k=5[O2, I3, O3] 3 variables 0.7739 Node 46AggregateExtract QualityHighestSilhouettewith k=3ALL variables 0.3171 Node 50Z-Scorelibrary(cluster.datasets)Datasetk23..9One row at a timeAppend ParameterAppend ParameterHighestSilhouettewith k=3[I1] 1 variable 0.7946 AppendColumnsSelectedLoop End Table Row To VariableLoop Start (deprecated) R Source (Table) Row Filter Normalizer Backward FeatureElimination Merge Variables Variable to TableColumn (deprecated) k-Means SilhouetteCoefficient Random NumbersGenerator Sorter Metanode Sorter Normalizer R Source (Table) Table Creator Table Row To VariableLoop Start (deprecated) Backward FeatureElimination Row Filter SilhouetteCoefficient Loop End k-Means Normalizer R Source (Table) Backward FeatureElimination SilhouetteCoefficient Loop End Row Filter Sorter k-Means Normalizer R Source (Table) Table Creator Table Row To VariableLoop Start (deprecated) Variable to TableColumn (deprecated) Variable to TableColumn (deprecated) Sorter Merge Variables

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Created by: MAURICIO
Created at: 2021-03-28
On NodePit since: 2022-02-06
Last update: 2024-12-23
Created with KNIME version: v4.3.2

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