A particularly popular model for the evaluation of text coherence is the entity-based local coherence model of Barzilay and Lapata (B&L) (2005;2008), which extracts mentions of entities in the text, and models local coherence by the transitions, from one sentence to the next, in the grammatical role of each mention.
as discussed in Section 1, the main objective of our work is to study the impact of deep hierarchical discourse structures in the evaluation of text coherence.