As a broad first pass, have you looked into LSI and other related topic-modeling algorithms? I am a Pythonista and I like a library called gensim very much for

As a broad first pass, have you looked into LSI and other related topic-modeling algorithms? I am a Pythonista and I like a library called gensim very much for playing in that space; maybe look at the documentation for that and see if it sparks any ideas?