Average Silhouette Width

Description

Optimal ratio: maximize inter-clusters distance/minimize intra-clusters distance.

The larger Average Silhouette Width the better the split. Interpretation:
* 0.71 to 1.00 excellent split,
* 0.51 to 0.70 reasonable structure has been found,
* 0.26 to 0.50 weak structure, could be artificial,
* moins de 0.25 horrible split.

Parameters

reduced_matrix: Connectivity Matrix ( input )

individual_clustering: Connectivity ROI Texture ( input )

kmin: Integer ( input )

kmax: Integer ( input )

The maximum number of clusters to consider.

clustering_silhouette: Clustering Silhouette ( output )

Technical information

Toolbox : Constellation

User level : 2

Identifier : average_silhouette_width

File name : brainvisa/toolboxes/constellation/processes/clustering_evaluation/cluster_validity/average_silhouette_width.py

Supported file formats :

reduced_matrix :

gz compressed NIFTI-1 image, GIS image, NIFTI-1 image, gz compressed NIFTI-1 image

individual_clustering :

GIFTI file, GIFTI file, Texture

clustering_silhouette :

JSON file, JSON file