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Could anyone suggest some statistical measures to describe the distribution of a dendrogram? If I have two dendrograms, how could can I quantify their structural differences?

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A bit more details could be helpful; how they are obtained, are branches weighted? – mbq♦ Oct 17 '10 at 11:47
Let me give you an example. I wrote an algo to cluster variables. Clustering can be represented by a dendrogram. This dendrogram changes over time (based on time series). The structure of the dendrogram slowly evolves and I am look for a measure to describe it (sort of descriptive statistics for dendrograms). – Edward Oct 17 '10 at 11:59

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See this SO question: http://stackoverflow.com/questions/2218395/how-do-you-compare-the-similarity-between-two-dendrograms-in-r

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In R there is the profdpm package, and an overview of available indices (incl. Fowlkes & Mallows's $B_k$) to compare HCs is available here, citeseerx.ist.psu.edu/viewdoc/…. – chl♦ Oct 17 '10 at 16:09

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