From a theoretical perspective, divergent structures are equivalent to several arguments (one for each claim) (Freeman 2011, page 16).
of this treatment, a great many of theoretical textbooks neglect divergent structures (Henkemans 2000; Reed and Rowe 2004) and also most computational approaches consider arguments as trees (Cohen 1987;Mochales-Palau and Moens 2009;Peldszus 2014).