In addition, since it is infeasible to apply the trained classifier to all the paragraphs in a large text corpus, such as the Gigaword corpus (Graff and Cieri, 2003), we identify candidate narrative paragraphs and only apply the statistical classifier to these candidate paragraphs.
we require a candidate paragraph to satisfy all the constraints used for identifying seed narrative paragraphs but contain only 30% 7 or more sentences with an actantial structure and have the longest character entity chain spanning over 20% 8 of or more sentences.