23.5 Global Coherence
A discourse must be cohere both locally and globally! All the previous sections focus on detecting and measuring local coherence. In this section, we aimed to learn about global coherence.
What are the two kinds of global discourse structure that are widely studied?
Structure of arguments – the structure of persuasion by offering claims and supporting premises
Structure of scientific papers – the structure of presenting research goals, results, and relationship to existing work
23.5.1 Argumentation Structure
What is argumentation mining?
It’s the task of analysing people’s argumentation.
What are the three components of a good argument?
Pathos – appealing to the emotions of listener
Ethos – appealing to speaker’s personal character
Logos – logical structure of the argument
A lot of work has been focusing on logos and creating annotated datasets. The annotations include identify claims and premises as well as argumentative relations. Claims are the main argument and premises are the supporting reasons to persuade listener of the claims. Premises can be supported by another premise. Argumentative relations include SUPPORT or ATTACK etc. Below is a figure of the argumentation structure of a persuasive essay.
23.5.2 The structure of scientific discourse
What is argumentative zoning?
The idea that each scientific paper aims to make a knowledge claim about a new piece of knowledge being added to the existing field. This required an annotation scheme, which consists of 15 tags. Each sentence is assigned to one of the 15 tags and the figure below showcase some of these tags.