What is GRPO / REINFORCE variants? Why does it exist? Where does it appear in Reinforcement Learning (RLHF)?
Draw or describe a visual model of GRPO / REINFORCE variants. What does it look like conceptually?
Work through a concrete manual example of GRPO / REINFORCE variants with real numbers or pseudocode.
How is GRPO / REINFORCE variants different from related concepts in Reinforcement Learning (RLHF)? What are the trade-offs?
Explain GRPO / REINFORCE variants in plain language using an analogy. Could a non-expert follow it?