Users can upvote or downvote responses they receive from ChatGPT and fill out a text field with additional feedback. In addition, OpenAI continues to gather data from ChatGPT users that could be used to further train and fine-tune ChatGPT. The models were trained in collaboration with Microsoft on their Azure supercomputing infrastructure. Proximal Policy Optimization algorithms present a cost-effective benefit to trust region policy optimization algorithms they negate many of the computationally expensive operations with faster performance. These rankings were used to create ' reward models' that the model was further fine-tuned on using several iterations of Proximal Policy Optimization (PPO). In the reinforcement learning step, human trainers first ranked responses that the model had created in a previous conversation. In the case of supervised learning, the model was provided with conversations in which the trainers played both sides: the user and the AI assistant. Both approaches used human trainers to improve the model's performance.
The fine-tuning process leveraged both supervised learning as well as reinforcement learning in a process called reinforcement learning from human feedback (RLHF).
It was fine-tuned (an approach to transfer learning ) over an improved version of OpenAI's GPT-3 known as "GPT 3.5". TrainingĬhatGPT is a member of the generative pre-trained transformer (GPT) family of language models. Following the release of ChatGPT, OpenAI's valuation was estimated at US$29 billion in 2023. Its uneven factual accuracy, however, has been identified as a significant drawback. It is built on top of OpenAI's GPT-3 family of large language models and has been fine-tuned (an approach to transfer learning) using both supervised and reinforcement learning techniques.ĬhatGPT was launched as a prototype on November 30, 2022, and quickly garnered attention for its detailed responses and articulate answers across many domains of knowledge.
ChatGPT is an artificial intelligence chatbot developed by OpenAI and launched in November 2022.
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