[eugenhotaj]

It's also strange because what they've trained is essentially a recommender system. However, at inference time you're not trying to rank 2 different articles, but the same article with 2 different titles, which I guess you could do, but I'm not sure how well this correlates to your actual ranking on HN.

I guess something more interesting would be to take into account the current front page and see how your article would rank against those, or something along these lines.

In any case, neat idea.