I realise this is an overly-broad question, but any insight into what's the state-of-art in Similarity Learning for article-type text? More specifically, I'm interested in deriving distances between writing style, arguing style, etc.
Basically, you can collect text from different authors, then you can use authors names as labels to train a similarity learning with it. My suggestion would be finetune a Transformer model with a specific head and an ArcFace loss.