Building a Story's Threads based on Interesting Concepts

The Contour system connects the images or video footages using keywords: the more keywords shared between two images, the higher relation between them will be. So when the viewer sorf of "create" a new "thread" by assigning a couple of keywords, the images related to these keywords will first be selected, and those relating to these chosen images will be selected as well, based on the spreading activaion technique.

Based on this idea, what I'm thinking about is that, maybe threads in a story can be constructed based on keywords that are found by our new system automatically. Suppose that the system finds that a particular keyword, or more specifically, a particular concept, is shared by some shots in the collection. And, the system can determine whether it's an interesting concept worth treating as a "thread" according to some criteria based on ConceptNet. Threads can thus be created even if they don't express particular intentions such as conflict resolution. I think it would probably be the most basic way of building threads, since in documentary films one cannot guarantee there will always be those high-level, interesting plot like conflict resolution or negotiation.

What is a so-called interesting concept? Something I can think of right now is a particular concept that evokes, or at least involves in, different affect states in different granules or shots. I wonder if the reasoning algorithm behind Hugo's EmpathyBuddy's could be used as some detecting engine. It doesn't need to be perfect at recognizing the inherent complex emotions within the shots, but only suggests an idea what kind of role the shot might play, with respect to the overall flow of the story thread.

Or maybe something I should think about before determining the tool to use is, "What are the criteria that script writers use to design the storylines?"