diff --git a/README.Rmd b/README.Rmd index 08b1c4b..87e0cf7 100644 --- a/README.Rmd +++ b/README.Rmd @@ -262,6 +262,7 @@ Method: characterising a tree by a vector Kendall and Colijn proposed a [metric](http://arxiv.org/abs/1507.05211) for comparing rooted phylogenetic trees (Kendall & COlijn, 2015). Each tree is characterised by a vector which notes the placement of the most recent common ancestor (MRCA) of each pair of tips, as demonstrated in this example: + Specifically, it records the distance between the MRCA of a pair of tips *(i,j)* and the root in two ways: the number of edges *m(i,j)*, and the path length *M(i,j)*. It also records the length *p(i)* of each 'pendant' edge between a tip *i* and its immediate ancestor. This procedure results in two vectors for a tree *T*: