PM_ME_VINTAGE_30S [he/him]

Anarchist, autistic, engineer, and Certified Professional Life-Regretter. If you got a brick of text, don’t be alarmed; that’s normal.

No, I’m not interested in voting for your candidate.

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Joined 1 year ago
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Cake day: July 9th, 2023

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  • PM_ME_VINTAGE_30S [he/him]@lemmy.sdf.orgtoMemes@lemmy.mlAI bros
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    26 days ago

    “Gradient descent” ≈ on a “hilly” (mathematical) surface, try to find the lowest point by finding the lowest point near an initial guess. Hopefully, the lowest point near your initial guess is low enough to pass as a solution to your problem.

    “Gradient” is basically the steepness, or rate that the thing you’re trying to optimize changes as you move through “space”. The gradient tells you mathematically which direction you need to go to reach the bottom. “Descent” means “try to find the minimum”.

    I’m glossing over a lot of details, particularly what a “surface” actually means in the high dimensional spaces that AI uses, but a lot of problems in mathematical optimization are solved like this. And one of the steps in training an AI agent is to do an optimization, which often does use a gradient descent algorithm. That being said, not every process that uses gradient descent is necessarily AI or even machine learning. I’m actually taking a course this semester where a bunch of my professor’s research is in optimization algorithms that don’t use a gradient descent!




  • That happened on reddit all the time, minus the instance part. Remember /r/freefolk?

    The “instance part” is absolutely huge. If I wanted to, I could go start a /c/lemmyshitpost on SDF Lemmy [1] with a completely new set of rules [2], particularly a set of rules that possibly would violate Lemmy.world’s TOS or possibly even the law in Lemmy.world’s jurisdiction, but not SDF’s or their jurisdiction’s laws.

    It’s not a big deal for the average user until the day you run afoul of the server admins.

    [1] As of writing this, SDF does not have a /c/lemmyshitpost.

    [2] I’m not interested in doing that lol, this is just a hypothetical. I’m annoyed at this most recent decision but nowhere near ready to leave over it.


  • Okay but you can always make your own shitposting community on your own instance with your own rules if you feel so strongly against the rules. That option simply was not available on R*ddit. The point of Lemmy isn’t that no one abuses their mod and admin powers ever, but that the system is set up so that you can just go to another Lemmy server, which simply was not available on R*ddit if you pissed off the site admins.

    Although I personally find Lemmy users nicer and moderation better on average, their character is not the point. It is merely the result of an imperfect but better system than R*ddit.


    1. Then the mods should be honest about why he’s being banned in the modlog.
    2. Him (charitably) being an overzealous meanie in defense of an honest brand of feminism does not make him a shitlord.
    3. Sometimes people need to be dunked on for both their own good and the good of the community, obviously myself included. A perfectly appropriate venue for some gentle dunking is a shitposting community.

    It’s a shame that the thread got locked. It was getting heated, but IMO that’s a good sign that what you’re talking about actually needs to be debated.