In article <9406222107.AA17629 at evolution.genetics.washington.edu> joe at GENETICS.WASHINGTON.EDU (Joe Felsenstein) writes:
>>By the way in the paper by Mary Kuhner and I in Molecular Biology and
>Evolution 11: 459-468 (1994) we describe two metric distances between
>trees, the Robinson and Foulds dT measure and our own concoction, the
>Branch Score, which is the square of a metric distance. The former
>depends only on the topology, the latter also on branch lengths.
You might also try the "median binary tree" approach. See Margush and McMorris
1981. Bull. Math. Biol. 43: 239-244; and Page, 1988, Syst. Zool. 37:
254-270 for an application.
Mark E. Siddall "I don't mind a parasite...
mes at vims.edu I object to a cut-rate one"
Virginia Inst. Marine Sci. - Rick
Gloucester Point, VA, 23062