The Yule tree graph The Yule tree is a graph with one edge coming in and two edges coming out of each branch-point. The branches represent the time periods between the evolution of new species. If the ...

The Yule tree graph The Yule tree is a graph with one edge coming in and two edges coming out of each branch-point. The branches represent the time periods between the evolution of new species.

Using data compiled from language resource ethnologue.com, Sundberg initially drew the language tree graph for the benefit of her comic book readers, and included fictional historical references.

Concepts which measure the centrality of a vertex in a graph (eccentricity, distance and branch weight) are extended to paths in a graph. Locating paths with minimum eccentricity and distance, ...