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How ChatGPT is Trained

This short tutorial explains the training objectives used to develop ChatGPT, the new chatbot language model from OpenAI. Timestamps: 0:00 - Non-intro 0:24 - Training overview 1:33 - Generative pretraining (the raw language model) 4:18 - The alignment problem 6:26 - Supervised fine-tuning 7:19 - Limitations of supervision: distributional shift 8:50 - Reward learning based on preferences 10:39 - Reinforcement learning from human feedback 13:02 - Room for improvement ChatGPT: https://openai.com/blog/chatgpt Relevant papers for learning more: InstructGPT: Ouyang et al., 2022 - https://arxiv.org/abs/2203.02155 GPT-3: Brown et al., 2020 - https://arxiv.org/abs/2005.14165 PaLM: Chowdhery et al., 2022 - https://arxiv.org/abs/2204.02311 Efficient reductions for imitation learning: Ross & Bagnell, 2010 - https://proceedings.mlr.press/v9/ross... Deep reinforcement learning from human preferences: Christiano et al., 2017 - https://arxiv.org/abs/1706.03741 Learning to summarize from human feedback: Stiennon et al., 2020 - https://arxiv.org/abs/2009.01325 Scaling laws for reward model overoptimization: Gao et al., 2022 - https://arxiv.org/abs/2210.10760 Proximal policy optimization algorithms: Schulman et al., 2017 - https://arxiv.org/abs/1707.06347 Special thanks to Elmira Amirloo for feedback on this video. Links: YouTube:    / ariseffai   Twitter:   / ari_seff   Homepage: https://www.ariseff.com If you'd like to help support the channel (completely optional), you can donate a cup of coffee via the following: Venmo: https://venmo.com/ariseff PayPal: https://www.paypal.me/ariseff