This was one I came across a while back, was very useful: Jazz drummers’ swing ratio in relation to tempo. It seems far easier to understand than a few I checke

This was one I came across a while back, was very useful: Jazz drummers’ swing ratio in relation to tempo. It seems far easier to understand than a few I checked out today including yours and the OP. And it sounds like the authors know what they're talking about, which is not the norm in papers about aspects of jazz. http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.416.5617&rep=rep1&type=pdf http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.416... It looks at the swing ratios of great drummers, i.e. people who actually swing! Tony, Jack, Tain and..well ok, Adam Nussbaum on an Aebersold playalong is a bizarre choice. It has some good graphs though, especially Figure 1. Mean swing ratio as a function of tempo (left) and absolute duration of second note as a function of tempo (right) for the four drummers and all excerpts and Figure 2. Swing ratio for the four drummers as a function of tempo.