ChatGPT's Architecture
Summary
An overview of ChatGPT's architecture, covering the GPT evolution, transformer blocks, positional encoding, and the use of Reinforcement Learning from Human Feedback (RLHF).
Key quotes
ChatGPT is based on GPT-3.5, an iteration of GPT-3 that includes refinements and optimizations for conversational AI.
OpenAI employs a technique called Reinforcement Learning from Human Feedback (RLHF) to fine-tune ChatGPT.
The article provides a technical breakdown of the Generative Pre-trained Transformer architecture and its application in ChatGPT. It details the progression from GPT-1 through GPT-3.5 and explains the mechanism of self-attention.