Cluster Density Performance - interpreting performance vector values

When using the Cluster Density Performance operator I get (negative) values in the performance vector output, but how am I to interpret these? What indicates higher cluster density: higher or lower (absolute) values?

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Performance

Clustering

k-Means Clustering

Accepted answers

Maerkli

Hallo Ger_Jongeling,

I found an interesting paper written by Andrew Chisholm, another RM authority:

https://rapidminernotes.blogspot.com/2011/04/how-average-within-cluster-distance-is.html

Please, have a look.

Met groeten,

Maerkli

All comments

sgenzer

hi @Ger_Jongeling sorry no one has chimed in here. Is this still a problem?

Ger_Jongeling

Yes, my question is still open.

sgenzer

ok let me ping the folks in RapidMiner and see if we can find an answer for you.

Maerkli

Hallo Ger_Jongeling,

I found an interesting paper written by Andrew Chisholm, another RM authority:

https://rapidminernotes.blogspot.com/2011/04/how-average-within-cluster-distance-is.html

Please, have a look.

Met groeten,

Maerkli