Davies boulden's results and avg. within centroid distance's results

2015228094

Hello , I want to ask about davies boulden's results and avg. within centroid distance's results, I did a cluster with k-mean with loop of k start from 2 to 25, so I use davies boulden and avg. within centroid distance to evaluate results, so the final result shows that davies boulden is infinity and avg. within centroid distance is zero when k = 4 and above , so I what I need to do ? remove results from k and above or there is an error and I can fix it?

lionelderkrikor

Hi@2015228094,

我不知道to interpret these values of Davies Bouldin Index and avg. within centroid distance.

However, if you are searching an optimum value of k for your clustering task, you can explore an other track :

Use theX-Meansoperator which determine the optimum number of clusters k based on the Bayesian Information Criterion (BIC).

I hope it helps,

Regards,

Lionel