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Cake day: June 4th, 2023

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  • howrar@lemmy.catoScience Memes@mander.xyzSquiggly Boie
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    4 days ago

    Neural networks are a class of models. Genetic algorithms are a class of learning algorithms. You use learning algorithms to train models. Genetic algorithms are a valid way of training neural networks, but this is not currently in vogue. They’re typically trained via gradient descent.



  • For some reason, I always thought his main contribution from his PhD was the volume thresholds for maintenance and adaptation.

    In any case, are we judging his value as a researcher or as a YouTuber? If it’s the former, I’d rather look at his publishing history rather than a thesis. Soloman mentioned that the school he graduated from wasn’t a particularly high ranking school, and that’s evidenced by how they were able to let this pass. Knowing how your school works, why would you put any effort at all into what is essentially just a formality for graduation? Where I went for grad school, the examiners will read your work properly, but most people still only put in the minimal effort for it. Our efforts mostly go into papers that actually get read. Your thesis is never expected to see the light of day again after graduation.

    If we’re judging him for his value as a YouTuber, then we should be judging his YouTube content. As far as that goes, he’s pretty much just preaching the same thing as every other fitness YouTuber. It’s just packaged differently. The one thing he does that stands out from others is explaining how science and the scientific method works when putting exercise science papers into context. I can understand his credentials being relevant here if you’re a non-expert, but as a scientist myself, I can vouch for the soundness of his explanations.

    Jeff’s response was definitely disappointing though. Insulting Soloman does not align with the wholesome character of him that was painted in my head.



  • An example with an oversimplified diet to illustrate the point I think you’re trying to make: You have a diet that’s exclusively cake and you’ve determined that you need 2000 Calories of cake to maintain your weight. That 2000 Calories figure is an estimate and we don’t know exactly how much of it we’re actually absorbing. In reality, it’s actually more like 1800 Calories. Now all of a sudden, you switch your diet to eating exclusively cookies. You measure out exactly 2000 Calories of cookies and eat the same thing every day. But your Calorie estimate is wrong and you’re actually eating 2100 Calories of cookies per day. Now you gain weight on this supposed 2000 Calorie diet.

    I argue that this doesn’t matter either. If you see that you’re gaining weight, then it means you’re eating too much. Reduce your Calorie target and you’ll be back on track. In a real world scenario, you’re going to have a much more varied diet than only cake or only cookies, and each item will come with their own measurement errors. But for most people, their diets are varied in a fairly consistent way, so these errors are also consistent on average. If you ever make changes in your diet (e.g. completely cut out McDonald’s), you’ll change both your estimated Calorie intake and target like in the example above. Adjust your numbers accordingly based on how your bodyweight moves and you’re good.

    Of course, other ways of dieting are also effective. It depends mostly on what you can adhere to and your goals.









  • Privacy concern for sure, but given that you can already tie different photos back to the same phone from lens artifacts, I don’t think this is going to make things much worse than they already are.

    someone could create a virtual camera that would sign images

    Anyone who produces cameras can publish a list of valid keys associated with their camera. If you trust the manufacturer, then you also trust their keys. If there’s no trusted source for the keys, then you don’t trust the signature.