Pairwise reward-model loss mathematical notation

Pairwise reward-model loss is a recurring research-paper notation family. Trains scalar reward scores so preferred responses outrank dispreferred responses under a pairwise logistic likelihood.

Pairwise reward-model loss: Trains scalar reward scores so preferred responses outrank dispreferred responses under a pairwise logistic likelihood. Example: Penalize the model when the preferred response fails to score higher.