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Re:Multidimensional analysis of plot arcs in thousands of TV... by bvm on Thursday December 18, 2014 @07:27AM (#8766944)
Answering your first question:

Latent Dirichlet Allocation (http://en.wikipedia.org/wiki/Latent_Dirichlet_allocation )

Re:Multidimensional analysis of plot arcs in thousands of TV... by iliis on Thursday December 18, 2014 @07:29AM (#8766949)
He links to a good explanation about topic modeling and LDA: http://tedunderwood.com/2012/04/07/topic-modeling-made-just-...
Re:Multidimensional analysis of plot arcs in thousands of TV... by blowski on Thursday December 18, 2014 @08:10AM (#8767064)
Thank you both.