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@dimitardanailov
dimitardanailov / google-compute-engine.md
Last active June 23, 2021 20:14
Tips and tricks related with Google Compute engine

Creating a Persistent Disk

Create a new instance
gcloud compute instances create gcelab --zone us-central1-c
Create a new persistent disk
@jefftangx
jefftangx / random_notion.py
Last active June 4, 2024 19:02
get random notion notes to resurface your old ideas!
'''
author:
@tangjeff0
https://www.notion.so/tangjeff0/Public-Home-0e2636bd409b454ea64079ad8213491f
inspired by: https://praxis.fortelabs.co/p-a-r-a-iii-building-an-idea-generator-400347ef3bb6/
with help from: https://medium.com/@jamiealexandre/introducing-notion-py-an-unofficial-python-api-wrapper-for-notion-so-603700f92369
credits:
@jamiealexandre
@tallguyjenks
tallguyjenks / code.sh
Last active February 21, 2025 08:51
ZettelKasten Sync Code
# To permanently cache the credentials
git config --global credential.helper store
# To ignore files that could cause issues across different workspaces
touch .gitignore
echo ".obsidian/cache
.trash/
.DS_Store" > .gitignore

Reinforcement Learning for Language Models

Yoav Goldberg, April 2023.

Why RL?

With the release of the ChatGPT model and followup large language models (LLMs), there was a lot of discussion of the importance of "RLHF training", that is, "reinforcement learning from human feedback". I was puzzled for a while as to why RL (Reinforcement Learning) is better than learning from demonstrations (a.k.a supervised learning) for training language models. Shouldn't learning from demonstrations (or, in language model terminology "instruction fine tuning", learning to immitate human written answers) be sufficient? I came up with a theoretical argument that was somewhat convincing. But I came to realize there is an additional argumment which not only supports the case of RL training, but also requires it, in particular for models like ChatGPT. This additional argument is spelled out in (the first half of) a talk by John Schulman from OpenAI. This post pretty much