Generally, the automatic search for arguments encompasses the following steps (Peldszus and Stede, 2013): 1. the segmentation of texts into argumentative discourse units(ADUs); 2. the classification of the role (e.g., claim, premise) played by each ADU; 3. the analysis of the relations linking ADUs (e.g., support, attack); and 4. the identification argument schemes, namely the implicit and explicit inferential relations within and across ADUs.
they have been conceived as arguments which support the negation of the proposition functioning as claim.