I have a NLP task/idea in mind, where the input and output text is structured purely hierarchically, like multi-level bulletpoint lists or a table of content. The question is: Is there any resaetch for this particular type of text for transformer modells? I am especially interested in possibilities to encode the position to represent the multi-level structure. Furthermore, do you know of any datasets containing such text samples (e.g. table of contents; multi-level notes; mind-maps; ...)?
I have already tried multiple combinations of the following search terms: "hierarchical text","multilevel lists", "nested list", "nlp", "transformer", "position encoding" but was unable to find any useful information.
Thank you for your help.