This software was developed for the PAN 2016 author clustering competition.
Bog is derived in part from Caravel which answers binary authorship questions (within a particular competititon framework). Both use the same underlying method and are based on the recur project.
There is a paper describing the approach at https://arxiv.org/abs/1608.04485.
This software is copyright Douglas Bagnall and is licensed under the GPL, version 2 or greater.