Silhouette score (not currently implemented)¶
Calculation¶
Gives the ratio between the cohesiveness of a cluster and its separation from other clusters. Values for silhouette score range from -1 to 1.
Expectation and use¶
A good clustering with well separated and compact clusters will have a silhouette score close to 1. A low silhouette score (close to -1) indicates a poorly isolated cluster (both type I and type II error).
References¶
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Literature¶
Introduced by [Rousseeuw].
Citations¶
- Rousseeuw
Peter J Rousseeuw. Silhouettes: A graphical aid to the interpretation and validation of cluster analysis. Journal of computational and applied mathematics, 20(C):53–65, 1987.