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Comment by danielmarkbruce

2 days ago

It's not an estimation of something. It's a policy.

Sure, you're right.

But it's a policy learned from a next-token prediction task. You could also call it an inferrer or generator or whatever. The point is that it takes as input a sequence of preceding tokens and emits one more token to continue the sequence.

  • The policy is not learned token by token during RLHF and RLVR. The reward model doesn't score token by token.