[nostrebored]

The leakage problem is so pervasive. None of the frontier models seem to have any idea how to actually hold out rows. God help you if you decide to change the data mix.

I was working on creating a next-n-actions predictor for one of our use cases and not paying much attention for a PoC. I was fairly happy with the progress for a few days, before actually reading the eval code and seeing that we leaked the final state in every eval.

It's nice to let claude run loose on porting from framework to framework (port my code from TRL to NemoRL to Tinker to VeRL) but looking at what it does in the intermediate steps makes me want to claw my eyes out. And getting it to adhere to our domain model (e.g. we have an SFTConfig and a .to_trl(), or a Row and a .to_harmony()) is impossible.