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jaschasd

HN member
Joined
Wed, Apr 08, 2020, 3:50 PM UTC
HN karma
26
Public activity
19 items

About jaschasd

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Recent public activity

  1. comment
    Comment #38849173

    It does! See the effect strength plot near the bottom of the blog post, or Figures 2b and 3d in the paper. The effect strength on humans ranges from a few percent deviation of huma…

  2. comment
    Comment #38849077

    This comment is incorrect. For experiments 1 through 4, N was 38, 389, 396, and 389. The subjects were not undergrad psych students. The article linked in the parent comment does n…

  3. comment
    Comment #33564444

    I can't reply directly -- is there a maximum thread depth, or a maximum conversation depth? Anyway -- I wanted to apologize for misreading -- I missed the parenthetical "interpolat…

  4. comment
    Comment #33563993

    (the plot shows extreme overfitting with a 10 parameter model, and interpolation with a 10,000 parameter model)

  5. comment
    Comment #33563346

    It's true that I don't go into detail about double descent, though I do describe how increasing capacity often reduces overfitting. I believe the figure labeled "Figure 1" illustra…

  6. comment
    Comment #33562024

    Thanks! I'm also adding this to my reading list now.

  7. comment
    Comment #33561998

    Blog post author here. A brief note that I do discuss the deep double descent phenomenon in the blog. See the section starting with "One of the best understood causes of extreme ov…

  8. comment
    Comment #33561885

    See response to alexmolas -- I'm using GitHub Pages + Jekyll + Markdeep. You don't see the source repo because it's private, but I'm happy to share a code snapshot with you if you …

  9. comment
    Comment #33561857

    Yes! In the post I talk about both under- and over-parameterization being mitigations for overfitting, though I don't use the term double descent.

  10. comment
    Comment #33561805

    +1. It doesn't require there to be a time axis -- but in practice, we almost always optimize incrementally, so it takes a while for the strong version of Goodhart's law to kick in.…

  11. comment
    Comment #33561773

    Yup, it's GitHub pages. It's just a private repo, so the world doesn't get to see my embarrassing edits and half written drafts. I would be happy to share a snapshot of the source …

  12. comment
    Comment #33561658

    +1 to this comment! The barrier between (thinking we) know what changes should happen, and realizing those changes in the real world, is complex and frustrating and political.

  13. comment
    Comment #33561596

    A gentle note that an incomplete piece of a goal (e.g. a loss function computed on a subset of the data) is a proxy for the full goal (e.g. the loss function on the full dataset). …

  14. comment
    Comment #33561481

    A note that the datapoints you train on are part of the training objective. If you are using different data at test time than you use at training time, then you are measuring the w…

  15. comment
    Comment #33557881

    (blog post author here) Yes! The post actually talks about that a bit: how overfitting can result from treating "leaders that have the most support in the population" as a proxy fo…

  16. comment
    Comment #33557855

    Blog post author here. Just for the record, I am very much in favor of metric-driven decision making. I suggest some ways we can make it more robust, and also that we should be awa…

  17. comment
    Comment #33557788

    Author of blog post here! Overfitting can happen in many ways -- your training objective can be different at train and test time, or as you suggest the datapoints you use can be di…

  18. comment
    Comment #27861410

    They show the source images next to the super-resolution output on the website for the iterative refinement paper: https://iterative-refinement.github.io/

  19. comment
    Comment #22816114

    Don't forget Neural Tangents, a high level library for building and running experiments with infinite width neural networks: https://github.com/google/neural-tangents