c index is used to estimate distance between clusters which is the smallest distance between observations what is the c index for hierarchical clustering where does the c index in clustering which of the following is the smallest distance? what is the c index in clustering? why is the c index a problem in clustered clustering which is the smallest distance for a cluster if the smallest distance between c clusters is zero, what is the c index? a which clustering is optimal how to find optimal cluster what is the maximum c index used for clustering why is the c index a little different for clustering how is the c index calculated? what is the minimum c index where in the c index does the smallest distance of observations converge? what is the c index in clustering what is a cluster's minimum distance what is the smallest distance in clustering? why is c index necessary for clustering