A data scientist cloned his best friends’ group chat using AI

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A data scientist cloned his best friends’ group chat using AI
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The group chat is sacred, but AI can fake it.

The creation of robo boys follows a familiar path, though. It starts with a large language model, or LLM — a system trained on huge amounts of text scraped from the web and other sources that has wide-ranging but raw language skills. The model was then “fine-tuned,” which means feeding it a more focused dataset in order to replicate a specific task, like answering medical questions or writing short stories in the voice of a specific author.

As Miller says, he’s sure Meta would have given him access to LLaMA if he’d requested it through official channels, but using the leak was easier. “I saw [a script to download LLaMA] and thought, ‘You know, I reckon this is going to get taken down from GitHub,’ and so I copied and pasted it and saved it in a text file on my desktop,” he says.

Miller was able to sort his training data by author and prompt the system to reproduce six distinct personalities.Once the model was trained on the group chat’s messages, Miller connected it to a clone of Apple’s iMessage user interface and gave his friends access. The six men and their AI clones were then able to chat together, with the AIs identified by the lack of a last name.

“There’s something so delightful about capturing the voice of your friends perfectly,” wrote Miller in his blog post. “It’s not quite nostalgia since the conversations never happened, but it’s a similar sense of glee ... This has genuinely provided more hours of deep enjoyment for me and my friends than I could have imagined.”The system still has issues, though.

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