This episode carries Roger Jin's own address, with nobody on the show putting
questions to them. It still counts as said, and it is kept out of every score on their page.
Roger Jin of Nous Research discusses standardizing reinforcement learning infrastructure to scale open-source AI training environments.
Insight
Jin: RL enables models to surpass expert labelers and develop self-direction
“The model outperforming expert labelers is, is possible. The model learning, like, self-direction is, like, expected. And yeah, we've seen, like, kind of cool emergent behaviors with, like, you know, like, O-one, O-three, R-one, kind of, like, these, like, thi…”
Insight
Jin: Supervised Learning Cannot Train Models by Demonstrating Bad Examples
“There's, like, a kind of deficit, which is, like, there's no way to demonstrate what is bad in supervised learning. You kind of just, you have to tell the model very well, like, what is good.”
Insight
Jin: Supervised Models Rarely Outperform Expert Human Labelers
“There are, like, kind of surprising results, like weak to strong generalization, but, like, in general, like, the model outperforming the expert labelers would be, like, kind of very surprising.”
Insight
Jin: Policy gradient algorithms function as weighted supervised fine-tuning
“If you kind of, like, look at, if you kind of stare at, like, this part it sort of looks like just, like, weighted supervised fine-tuning, right? Like, you have this, like, log of, like, the probability of a token and, like, some, like, weight on it and reinfo…”
Insight
Jin: Fusing inference and scoring natively enables multi-step and multi-agent RL
“Collect trajectories is a fusion of both these. It handles both inference and scoring, and we deliberately chose that because, like, what happens when you try to, like, do, like, multi-turn, or, like, multi-agent with, like, a separate score function? Then thi…”
Insight
Jin: Language models map directly to reinforcement learning policies
“So the states are, like, the text prefixes, so the initial states, like, the prompt the actions are the next tokens that means, like, a language model is, like, exactly what a policy is, right? A policy maps a state to a probability distribution of our next ac…”