Wordfish

Wordfish is a Poisson scaling model of unsupervised one-dimensional document positions \cite{Slapin_2008}. The result of Wordfish (Fig.\ref{409560}) shows a significant differentiation between DC and Marvel reviews, while Marvel's reviews tend to stay on one side (-1 to 0 theta value), DC's reviews tend to spread all over the place. It can also be found from the box charts (Fig.\ref{570275}) that Marvel's reviews are more uniform and DC's are much more diverse. The guitar plot (Fig.\ref{281362}) shows that Marvel has more distinctive words in their reviews. More interestingly, we discovered there are 1 Marvel movie and 8 DC movies are clustered into the wrong side based on their reviews (Fig.\ref{409560}). After some investigations, we found Stardust and Shazam from DC are recognized as Marvel movies. Indeed, Stardust and Shazam are more similar to Marvel movies in their styles because Stardust talks about love, family, and relationship, and Shazam is a typical positive and inspirational superhero movie.