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Cake day: June 29th, 2023

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  • Nalivai@discuss.tchncs.detoComic Strips@lemmy.worldFour Eyes Principle
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    11 months ago

    very similarly to human brains

    While the model of a unit in neural network is somewhat reminiscent of the very simplified behaviouristic model of a neuron, the idea that NN is similar to a brain is just plain wrong.
    And I’m afraid, based on what you wrote, you didn’t understand what this story means and why I told it.


  • My favourite story about it was that one time when neural network trained on x-rays to recognise tumors I think, was performing amazingly at study, better than any human could.
    Later it turned out that the network trained on real life x-rays with confirmed cases, and it was looking for penmarks. Penmarks mean the photo was studied by several doctors, which mean it’s more likely to be the case that needed second opinion, which more often than not means there is a tumour. Which obviously means that if the case wasn’t studied by humans before, the machine performed worse than random chance.
    That’s the problem with neural networks, it’s incredibly hard to figure out what exactly is happening under the hood, and you can never be sure about anything.
    And I’m not even talking about LLM, those are completely different level of bullshit