Re: [R] Help understanding cutree used for Dunn Index

2011-12-09 Thread kbrownk
I found a way to draw rectangles around whatever cutree cuts, so I think I now have a better idea, which is that it looks for the largest k distances and cuts there, where k is the # clusters you want defined. Then, I assume Dunn index uses the same defined #clusters to determine within vs. acro

[R] Help understanding cutree used for Dunn Index

2011-12-08 Thread Kerry
Basic question: Is it correct to assume that when using cutree to set the # clusters (say k=4), cutree determines the clusters by the largest distances among all potential clusters? I've read the R help for cutree and am using it to define the number of groups to obtain Dunn Index scores (using c