Submitted by twocupv60 t3_xvem36 in MachineLearning
suflaj t1_irj50vf wrote
Reply to comment by aWildTinoAppears in [D] How do you go about hyperparameter tuning when network takes a long time to train? by twocupv60
> Only theoretical papers are publishing guarantees. DeepMind and OpenAI aren't claiming their networks are "done" training or are perfectly optimal, just that they have passed a performance threshold in which the scientific contribution is worth sharing and they have done an extensive hparam search to reach that point.
Great. Now notice we are speaking of theory. In practice in DL trial and error is usually better than formally analyzing or optimizing something.
> They literally say they sometimes see it, more data isn't bad, and they aren't making any claims around it because it deserves more work.
Great. One thing to notice - you are making claims that early stopping is good enough. I am making claims that because of double descent and not understanding it fully, you cannot make such claims. Those are just guesses, and not even well-informed ones.
To make such claims, the prerequisite would be to first prove (without a reasonable doubt) that your model does not exhibit overparametrization side-effects. This would mean that instead of early stopoing, you run it for way more than you intend to. THEN you can do these checkpointing optimizations, if it turns out you don't have to worry about it.
But usually it is just enough to get it working well enough instead of formally optimizing the hyperparameters, because whatever optimization you do, it cannot account for unseen data. My point is not that this is better, it's that whatever you do you are guessing, and might as well take cheaper guesses if you're not interested in it being very robust.
> Moving goal posts again, also dd is from eoy 2019.
What do you mean moving goal posts again? 3 eternities refers to 6 years ago, i.e. 2016. That is the last time models were small enough for double descent to be basically undetectable, since Attention is All You Need was released in June 2017 and worked on for quite some time then. Double descent was formally described in 2019, yes. But the phenomena it describes happened way before, and in my experience, transformers were the first to exhibit it in pretraining. Maybe it was even more than 3+ eternities ago that we had models that experienced double descent, I have not been doing DL seriously for that long.
> I won't be responding here again but encourage you and RealNetworks to publish some peer reviewed research highlighting the claims you're making in this thread.
You might have gotten the wrong person for the job, as we mostly do engineering, but love that you put in the effort to try and stalk me :)
Given that this has become personal, rather than sticking to the topic, I will not respond anymore either.
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