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duvenaud

HN member
Joined
Tue, Feb 02, 2016, 9:23 PM UTC
HN karma
490
Public activity
127 items

About duvenaud

Assistant Professor at the University of Toronto, working on machine learning.

Website: http://www.cs.toronto.edu/~duvenaud/

Recent public activity

  1. comment
    Comment #44631035

    This is simply wrong. Backprop has the same asymptotic time complexity as forward.

  2. comment
    Comment #42914584

    Which material ongoing issues are we ignoring? The paper is mainly talking about how the mundane problems we're already starting to have could lead to an irrecoverable catastrophe,…

  3. comment
    Comment #42914544

    One of the authors here. I don't think we anthropomorphize AI as some sort of God. Here's a more prosaic analogy that might be helpful. Imagine tomorrow there's a new country full …

  4. comment
    Comment #42914469

    > as we notice these things, we pass laws against it Well, the claim is that that's the sort of thing that will get harder once humans aren't involved in most important decisions. …

  5. comment
    Comment #42914443

    > we have categorized the ways it goes rogue (monopoly, extortion, etc) and responded adequately. This objection is a reasonable one. But the point of the paper is that a lot of th…

  6. comment
    Comment #42904718

    > A society whose tagline is "alive and free in some senses" is already dystopian! Haha. Well we might agree about that - that description covers a wide range of possibilities. If …

  7. comment
    Comment #42902056

    I appreciate your engagement, and I don't really have a plan myself to address these problems, but I don't really know what to do with "Socialism" as a recommendation. Care to elab…

  8. comment
    Comment #42901963

    These are all good points about our use of language, thanks for the feedback. Maybe "disempowerment" is a bit of a red herring, or a misleading problem to focus on. The reason we d…

  9. comment
    Comment #42901902

    Yep, a major missing piece in this entire problem / discussion is how to characterize how much "power" "humans" have had. My best idea so far is to characterize the sorts of outcom…

  10. comment
    Comment #42895117

    > What incentives do any humans have to so totally delegate the functioning of the core levers of societal power that they're unable to prevent their own extinction? Because it'll …

  11. comment
    Comment #42894604

    Last author here. I agree that states already have little incentive to effectively represent their citizens. But they could have even less! What would it look like to face these is…

  12. comment
    Comment #42894557

    In many senses, yes. But the empowered ones still needed to keep most of the rest of the people happy and healthy enough to work, most of the time. That's what we're saying will ch…

  13. comment
    Comment #42894521

    Last author here. Good point, I agree that the move to an entirely self-sustaining machine economy would require extra time, and that would drag out the time to extinction even the…

  14. comment
    Comment #42217923

    Update: the code is here: https://github.com/jerryqhyu/distill_bayes_net

  15. comment
    Comment #42217708

    I agree that priors over aspects of the world would be more useful, but I don't think that they're important in making natural intelligence powerful. In my experience, the importan…

  16. comment
    Comment #42217675

    BNNs certainly have their uses, but I think people in general found that it's a better use of compute to fit a larger model on more data than to try to squeeze more juice from a gi…

  17. comment
    Comment #42217663

    Thanks for pointing that out!

  18. comment
    Comment #42217660

    This approach characterizes a different type of uncertainty than BNNs do, and the approaches can be combined. The BNN tracks uncertainty about parameters in the NN, and mixture den…

  19. comment
    Comment #42217646

    I still am excited by Dex ( https://github.com/google-research/dex-lang/ ) and still write code in it! I have a bunch of demos and fixes written, and am just waiting for Dougal to …

  20. comment
    Comment #42217635

    I think we used a distill.pub template. Also Jerry wrote some custom BNN fitting code in javascript. I'll ask my co-authors to open-source it.

  21. comment
    Comment #42217613

    Sure, instead of saying "choose" a prior, you could say "elicit". But I think in this context, focusing on a practitioner's prior knowledge is missing the point. For the sorts of p…

  22. comment
    Comment #42217582

    I would argue against the idea that "MLE is just Bayes with a flat prior". The power of Bayes usually comes mainly from keeping around all the hypothesis that are compatible with t…

  23. comment
    Comment #42210492

    Good point. We wrote this pre-double descent, and a massively overparameterized model would make a nice addition to the tutorial as a baseline. However, if you want a rich predicti…

  24. comment
    Comment #42210454

    I agree that Bayesian neural networks haven't been worth it in practice for many applications, but I think the main problem is that it's usually better to spend your compute traini…

  25. comment
    Comment #42210422

    I agree choosing priors is hard, but choosing ReLU versus LeakyReLU versus sigmoid seems like a problem with using neural nets in general, not Bayesian neural nets in particular. A…