Mark:

About one year ago, I finished building a book recommender for the Project Gutenberg collection. To do so, I analyzed the style and content of tens of thousands of the books they freely provide (for more details on precisely how I did this, you can read my earlier blog post). Recently it occurred to me to revisit this data with a slightly different aim. Rather than quantifying the similarity of individual books, I could try to estimate the stylistic relationships between authors. From a practical point of view, such an analysis could serve a similar purpose to the book recommender, except at the slightly coarser level of authors. From an academic perspective, determining quantitatively which authors wrote like each other could prove useful to scholars attempting to resolve outstanding problems in literary theory. The results of this effort can be seen below.