cluster analysis - FindClusters versus ClusteringComponents

^{[Cross-posted on the Wolfram Community.]}

I just found out that there's a difference in the number clusters retrieved when using FindClusters and ClusteringComponents for the same data set, even when completely the same settings are used:

Do[koppels = RandomReal[{0, 100}, 500];
 cl = FindClusters[koppels, DistanceFunction -> EuclideanDistance, 
   Method -> "Optimize"];
 indices2 = 
  ClusteringComponents[koppels, Automatic, 1, DistanceFunction -> EuclideanDistance, 
   Method -> "Optimize"];

 Print[{First@Dimensions[cl], Max[indices2]}];, {i, 1, 6}]

{2,2}

{2,2}

{1,2}

{2,2}

{1,2}

{1,2}

This shouldn't be the case, because the same clusters should be found either way. Does someone have an idea of what's going on here?

Comments

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