Physics Math be like…

  • tacosanonymous@lemm.ee
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    2 months ago

    My calc professor would say that stuff and be absolutely giddy despite rows of barely adults with confused faces looking at him.

  • LeFrog@discuss.tchncs.de
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    2 months ago

    Its about a certain form of reinforced learning, called Temporal Difference Learning:

    https://inria.hal.science/hal-00840470/document at page 11.

    The calculation is called simple because it follows directly from the definitions above. Simple means more like “follows directly from definition without fancy math tricks”, not " everyone who can read could solve this in 10 minutes".

    I think this is also mostly math related, not physics?

    I had a good laugh anyway. Good meme

    • Septian@lemmy.zip
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      2 months ago

      We’ve got the time dependent polar Schrödinger equation any time we want to pull out a ridiculous looking equation in pre-graduate level physics.

    • bluemellophone@lemmy.world
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      2 months ago

      Reinforcement learning is a machine learning (ML) technique (“AI” in layman terms) for optimizing neural networks and other types of non-linear models.

      As far as ML math goes, this is fairly tame. It looks complicated, but is spelled out clearly in the paper. A lot of these kind of theoretical papers — things that would get published in Automatica — are going to lean very heavy on math.

      Source: PhD in Computer Science with dissertation using neural networks.

  • aubeynarf@lemmynsfw.com
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    2 months ago

    That particular line looks like application of some rule or substitution of a term - on it’s own, simple

    • marcos@lemmy.world
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      2 months ago

      Yep. There’s no rule, it’s only variable substitution.

      It’s a really large substitution, touching several places and etc, but it’s still simply variable substitution.

  • Prunebutt@slrpnk.net
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    2 months ago

    I think it says “simple” as due to not discourage the reader, 'cause it’s probably a simple substitution in context which just looks complicated at first glance.

    • A_A@lemmy.world
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      2 months ago

      [rant] . All authors that often say things like : “we can simply do this or that” … for me, is dismissive humble bragging. And, if they really wanted to encourage readers they would say : “in the following equation we used substitution” … something descriptive.

      Every time we study a new subject it is always difficult at first and seeing someone bragging, saying it is simple for them, is never encouraging.

    • wieson@feddit.org
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      2 months ago

      Even worse are the ones that go super slow.

      And now we pluck the 3rd string in the 5th fret with our thumb. Bum

      The next step is to release the string and move over to…

    • ms264556@beehaw.org
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      2 months ago

      So uncomfortably true!

      I recall spending a (large) number of weeks struggling through Elementary Stochastic Calculus, which had an incredibly misleading sticker on the cover proclaiming:-

      “This book is suitable for the reader without a deep mathematical background.”

  • FuglyDuck@lemmy.world
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    2 months ago

    Whoever wrote that, could have taught law school with that kind of irony.

    (“Brief” my ass.)

  • Treczoks@lemmy.world
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    2 months ago

    That’s what my son’s homework from university looks like. I’ve done the same stuff about 35 years ago, but as I never used advanced algebra and analysis for my job, I’ve basically forgotten most of it.

    At least I know roughly what my son is talking about. My wife (language teacher of German and English) is completly lost.