Implement Dr

RLHF & Preference Optimization5 / 7

Chapter 125 / 7

RLHF & Preference Optimization

Implement Dr

Hard

Implement Dr. GRPO (GRPO with the length and std-normalization terms removed) and show, on a toy batch, that it changes the relative weighting vs GRPO. [DeepSeek]

Target interface
grpo_adv(rewards)

Implement the function/class skeleton in the editor. Any correct approach is accepted.

Hints0 / 2
Reference solution
Your own code stays in the editor.