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I think that the main issue is that the columns in the PDF aren't identified as columns of sequential text, they are just rectangles. So there is no reliable wa

I think that the main issue is that the columns in the PDF aren't identified as columns of sequential text, they are just rectangles. So there is no reliable way to reposition the text so that it doesn't use two columns. I've seen others propose to replace PDF in favor of more dynamic formats like EPUB. But I wonder if it wouldn't be more pratical to standardize tags and proporties that can be written to the PDFs, so that readers are better able to handle them.

nailer 2y ago
Yes. But it’s relatively easy to train a model as there is a huge quantity of before text and after PDF available.
nbenitezl 2y ago
Not true, PDF standard has concept of text flow, that's why when you highlight horizontally from a column all the way to next column then all text in the first column is highlighted.