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Davies Boulding index returning negative values
vikram_neo_rapi
Member Posts: 1 
Learner III
Hi All,
I am trying to gauge the performance of the k means algo using different k values (using the DB index values). Strangely all DB idx values being returned are negative. I guess this must be due to the average dist from centroid in different clusters being negative. But what i dont understand is that distances being scalar values , how any distance could be negative ...or am i missing something here ? Please let me know.
Regards,
Vikram
I am trying to gauge the performance of the k means algo using different k values (using the DB index values). Strangely all DB idx values being returned are negative. I guess this must be due to the average dist from centroid in different clusters being negative. But what i dont understand is that distances being scalar values , how any distance could be negative ...or am i missing something here ? Please let me know.
Regards,
Vikram
0
Answers