How to compare clusters?

Question

Hopefully this can be done with python! I used two clustering programs on the same data and now have a cluster file from both. I reformatted the files so that they look like

Answer 1

Comparing two clusterings is not trivial task and reinventing the wheel is unlikely to be successful. Check out this package which has lots of different cluster similarity metrics and can compare dendrograms (the data structure you have).

The library is called CluSim and can be found here: https://github.com/Hoosier-Clusters/clusim/