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Google tool makes AI-generated writing easily detectable
Google DeepMind has been using its AI watermarking method on Gemini chatbot responses for months – and now it’s making the tool available to any AI developer
“While no known watermarking method is foolproof, I really think this can help in catching some fraction of AI-generated misinformation, academic cheating and more,” says Scott Aaronson at The University of Texas at Austin, who previously worked on AI safety at OpenAI. In Google DeepMind’s AI watermarking approach, as the model generates a sequence of text, a “tournament sampling” algorithm subtly nudges it toward selecting certain word “tokens”, creating a statistical signature that is detectable by associated software. The winners move through successive tournament rounds until just one remains – a “multi-layered approach” that “increases the complexity of any potential attempts to reverse-engineer or remove the watermark”, says Furong Huang at the University of Maryland.
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