Representing Social Common-Sense Knowledge in MEXICA.

One of the most difficult tasks in plot generation is the production of sequences of actions that make sense within the context of a narrative. Previous systems have employed predefined story structures, or variations of them, to guarantee the generation of coherent outputs. However, this method may produce rigid and predictable tales. Thus, it is necessary to find alternatives that allow more flexible stories to be composed. The use of common-sense knowledge (CSK) that includes social features is a useful tool in this endeavour. This chapter describes how MEXICA, a plot generator, exploits such social CSK to generate narratives avoiding the use of predefined story structures. The results suggest that this is a promising approach.