Stylometry

Character voice versus narrator voice. Extract characters' dialog like a chat room.

Effect of human translation. In some ways like imitation.

"Detecting Hoaxes, Frauds, and Deception in Writing Style Online", Sadia Afroz, Michael Brennan, and Rachel Greenstadt (Drexel University). Slides.

"Unsupervised Decomposition of a Document into Authorial Components", Moshe Koppel, Navot Akiva, Idan Dershowitz, Nachum Dershowitz.

"Searching with Style: Authorship Attribution in Classic Literature", Ying Zhao, Justin Zobel.

"A Survey of Modern Authorship Attribution Methods", Efstathios Stamatatos.

"Clustering by Compression", Rudi Cilibrasi, Paul Vitanyi. http://complearn.sourceforge.net/