Syuzhet: Extraction of sentiment-based plot arcs from text
github.com
github.com
Both sides also seem to acknowledge that the sentiment analyzers chosen don't work well for literature. Junk data + lowpass filter = Beautiful curves generated from noise.
Article: http://motherboard.vice.com/read/computers-find-that-there-a...
Author's blog: http://www.matthewjockers.net/