Avg. within centroid distance

Ebtihal

Hello,

I need the formula of Avg. within centroid distance in RapidMiner,

I need some references for the formula

thanks

RolandJones

Hi @Ebtihal

Just to clarify, do you need to know how to apply this formula, or understand the formula it is using?

Thanks,

Roland

Ebtihal

yes, I know the formula for each cluster is:

for all clusters is:

so, I need justification of those formulas, also some references for them

RolandJones

Hi,

This is a very commonly used formula, so I would recommend searching through academic sources if you think you need a reference. For example, I found this book referencing the measure:

https://www.sciencedirect.com/topics/computer-science/cluster-centroid

Hope this helps,

Roland

Ebtihal

it helps,

thanks