narrow AIs that can supposedly identify an author from their writing
It's not a "narrow AI", it's a straightforward statistical model. Or, if you prefer, an outcome of machine learning applied to texts of different authors.
identify sockpuppets
A voting sockpuppet doesn't post except to get the initial karma. It just up- and down-votes -- there is no text to analyse.
There's a pattern of voting to analyse, though...
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
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