Computer scienceData scienceMachine learningClusteringClustering evaluation

Silhouette coefficient

The coefficient

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Let's say we calculated the silhouette values for 2 clusters, obtaining the following silhouette values:

$\text{Cluster 1} = [0.8, 0.23, 0.61, 0.55, 0.72, 0.68 ] \\ \text{Cluster 2} = [0.3, 0.11, 0.17, 0.201, 0.19, 0.13 ] \\$

Looking at the silhouette values alone, what could be concluded about the quality of the Cluster 1 and Cluster 2?

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The silhouette values are inconclusive to compare the clustering quality between the first and the second cluster

The second cluster shows better confidence in the correctness of the clustering results when compared to the first cluster

The first cluster shows better confidence in the correctness of the clustering results when compared to the second cluster

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