“A simple calculation”

Comments

• LeFrog@discuss.tchncs.de ⁨2⁩ ⁨months⁩ ago

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

  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?

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  • Septian@lemmy.zip ⁨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.

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  • bluemellophone@lemmy.world ⁨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.

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• chemicalwonka@discuss.tchncs.de ⁨2⁩ ⁨months⁩ ago

  Same feeling

  1000019557

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  • tweeks@feddit.nl ⁨2⁩ ⁨months⁩ ago

    I thought these were AI generated at first.

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  • wieson@feddit.org ⁨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…

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• vonxylofon@lemmy.world ⁨2⁩ ⁨months⁩ ago

  I work in documentation. We aren’t allowed to use words like “simple” or “easy” precisely for this reason.

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• HexesofVexes@lemmy.world ⁨2⁩ ⁨months⁩ ago

  "We can trivially show that…’

  Turns out, after a page of algebra, it wasn’t “trivial”.

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  • someacnt_@lemmy.world ⁨2⁩ ⁨months⁩ ago

    When they say “It is obvious”, they mean it is an exercise may take hours. At least it does not take days!

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  • sverit@lemmy.ml ⁨2⁩ ⁨months⁩ ago

    Yadda Yadda Yadda, q.e.d.

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• aubeynarf@lemmynsfw.com ⁨2⁩ ⁨months⁩ ago

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

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  • marcos@lemmy.world ⁨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.

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• EunieIsTheBus@feddit.de ⁨2⁩ ⁨months⁩ ago

  This trivial result is left as an exercise to the reader.

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• nova_ad_vitum@lemmy.ca ⁨2⁩ ⁨months⁩ ago

  We should have never given physicists the alphabet.

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  • HappycamperNZ@lemmy.world ⁨2⁩ ⁨months⁩ ago

    Let alone the Greek one as well

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    • Trail@lemmy.world ⁨2⁩ ⁨months⁩ ago

      Yeah I’d rather have Kanji instead. You can better attach meaning to variables this way!

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• aeronmelon@lemmy.world ⁨2⁩ ⁨months⁩ ago

  “Just a simple chord:”

  plays Through Fire & Flames

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• Treczoks@lemmy.world ⁨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.

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• GlennMagusHarvey@mander.xyz ⁨2⁩ ⁨months⁩ ago

  Math majors: “Duh.”

  Non-math majors: “And then a miracle occurs…”

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  • Leate_Wonceslace@lemmy.dbzer0.com ⁨2⁩ ⁨months⁩ ago

    I’m a mathematician; that shit on screen ain’t simple.

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• tacosanonymous@lemm.ee ⁨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.

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• FuglyDuck@lemmy.world ⁨2⁩ ⁨months⁩ ago

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

  (“Brief” my ass.)

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• Prunebutt@slrpnk.net ⁨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.

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  • A_A@lemmy.world ⁨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.

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    • Prunebutt@slrpnk.net ⁨2⁩ ⁨months⁩ ago

      Yeah, I guess you got a point.

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• Console_Modder@sh.itjust.works ⁨2⁩ ⁨months⁩ ago

  Thanks. You just gave me flashbacks to my college classes. I felt a shudder run down my spine

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• wise_pancake@lemmy.ca ⁨2⁩ ⁨months⁩ ago

  Stochastic differential equations?

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  • ms264556@beehaw.org ⁨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.”

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    • wise_pancake@lemmy.ca ⁨2⁩ ⁨months⁩ ago

      I think that translates to only requiring one phd to understand

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• GravitySpoiled@lemmy.ml ⁨2⁩ ⁨months⁩ ago

  To be fair, it looks simple compared to really difficult stuff

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