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OpenAI's fix for hallucinations is simpler than you think

Hector Roqueta Rivero/Moment via Getty Images Follow ZDNET: Add us as a preferred source on Google. ZDNET's key takeaways OpenAI says AI hallucination stems from flawed evaluation methods. Models are trained to guess rather than admit ignorance. The company suggests revising how models are trained. Even the biggest and most advanced generative AI models occasionally hallucinate, or generate inaccurate information presented as fact. Now, OpenAI claims to understand why -- while offering a p

Knowledge and memory

September 6, 2025 The other day, I asked Claude how to do some­thing using a par­tic­ular Ruby library, and it hal­lu­ci­nated three nonex­is­tent methods in a row. We can ask “why do lan­guage models do this?” but/and we can also ask, “why doesn’t Robin do this?” I think it’s because I don’t only know things: I remember learning them. My knowl­edge is sedimentary, and I can “feel” the posi­tion and solidity of dif­ferent facts and ideas in that mass. I can feel, too, the airy dis­con­nect of

Knowledge and Memory

September 6, 2025 The other day, I asked Claude how to do some­thing using a par­tic­ular Ruby library, and it hal­lu­ci­nated three nonex­is­tent methods in a row. We can ask “why do lan­guage models do this?” but/and we can also ask, “why doesn’t Robin do this?” I think it’s because I don’t only know things: I remember learning them. My knowl­edge is sedimentary, and I can “feel” the posi­tion and solidity of dif­ferent facts and ideas in that mass. I can feel, too, the airy dis­con­nect of

Using information theory to solve Mastermind

How you've just played optimal Mastermind Mastermind is a game all about information. The Code Master selects one of \( 6^4 = 1\,296 \) secret codes. Each incorrect guess gives us information by eliminating some of these; the more codes that are ruled out, the more information that guess has provided. Let's quantify this insight! Suppose a guess gets some response that reduces the number of possible keys from some number \(n\) to a smaller \(n'<n\). The convention in information theory, a branc

Subscribers to Fashion Magazine Vogue Disgusted When They Realize Where Its New Two-Page "Photos" Really Came From

Subscribers to the iconic fashion and lifestyle magazine Vogue were horrified after spotting a double-page ad for the brand Guess, featuring a blonde model who didn't look quite right. Unsurprisingly, a small caption in the top left-hand corner revealed that the two images, which showed the fake model sporting two different looks, were "produced" by AI marketing company Seraphinne Vallora. Vogue isn't just another fashion rag; it's a flagship brand of Condé Nast's publishing empire, as well as

Subscribers to Fashion Magazine Vogue Disgusted When They Realize Where Its New Two-Page "Photo" Really Came From

Subscribers to the iconic fashion and lifestyle magazine Vogue were horrified after spotting a double-page ad for the brand Guess, featuring a blonde model who didn't look quite right. Unsurprisingly, a small caption in the top left-hand corner revealed that the two images, which showed the fake model sporting two different looks, were "produced" by AI marketing company Seraphinne Vallora. Vogue isn't just another fashion rag; it's a flagship brand of Condé Nast's publishing empire, as well as