tailieunhanh - On Sackin’s original proposal: The variance of the leaves’ depths as a phylogenetic balance index

The Sackin index S of a rooted phylogenetic tree, defined as the sum of its leaves’ depths, is one of the most popular balance indices in phylogenetics, and Sackin’s paper (Syst Zool 21:225–6, 1972) is usually cited as the source for this index. |