RST is a descriptive framework that has been widely used in the analysis of discourse organization of written texts (Taboada and Mann, 2006b), and has been applied to various natural language processing tasks, including language generation, text summarization, and machine translation (Taboada and Mann, 2006a).
the availability of RST annotations on a selection of 385 Wall Street Journal articles from the Penn Treebank 1 ) has facilitated RST-based discourse analysis of written texts, since it provides a standard benchmark for comparing the performance of different techniques for document-level discourse parsing (Joty et al., 2013;.