How did they measure and train for warmth and empathy? Since they are using two adjectives are they treating these as separate metrics? Ime, LLMs often can't te

How did they measure and train for warmth and empathy? Since they are using two adjectives are they treating these as separate metrics? Ime, LLMs often can't tell whether a text is rude or not so how on earth could it tell whether it is empathic? Disclaimer: I didn't read the article.