Silhouette coefficient in knime

hi all,

I want to use the silhouette coefficient to measure the quality of the clusters

it seems that it is not found in knime

so, please can you create it for me or program this node 

I don't know how to write codes and I need the silhouette urgently

I want to measure the quality of document clusters clustered using k-medoids with cosine distance

thanks in advance

Yeah I agree, we need more options to evaluate clusters.