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fchollet's profile
François Chollet
François Chollet
François Chollet
Verified account
@fchollet

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François CholletVerified account

@fchollet

Deep learning @google. Creator of Keras. Author of 'Deep Learning with Python'. Opinions are my own.

United States
fchollet.com
Joined August 2009

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    1. François Chollet‏Verified account @fchollet 29 Jun 2018

      Ablation studies are crucial for deep learning research -- can't stress this enough. Understanding causality in your system is the most straightforward way to generate reliable knowledge (the goal of any research). And ablation is a very low-effort way to look into causality.

      9 replies 96 retweets 359 likes
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    2. François Chollet‏Verified account @fchollet 29 Jun 2018

      If you take any complicated deep learning experimental setup, chances are you can remove a few modules (or replace some trained features with random ones) with no loss of performance. Get rid of the noise in the research process: do ablation studies.

      3 replies 20 retweets 105 likes
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      François Chollet‏Verified account @fchollet 29 Jun 2018

      Can't fully understand your system? Many moving parts? Want to make sure the reason it's working is really related to your hypothesis? Try removing stuff. Spend at least ~10% of your experimentation time on an honest effort to disprove your thesis.

      8:36 AM - 29 Jun 2018
      • 18 Retweets
      • 160 Likes
      • Kulbir Singh Ahluwalia Jakub Beránek Dylan Sosa Andrea Parker Breno W. Carvalho sagar raikar Manuel Pariente Marcos Pereira Chris Huston
      4 replies 18 retweets 160 likes
        1. Stefan Holderbach‏ @SHolderbach 29 Jun 2018
          Replying to @fchollet

          Those two fun papers come too mind, when talking about "If I can't break it, I can't understand it" http://journals.plos.org/ploscompbiol/article?id=10.1371/journal.pcbi.1005268 … https://www.cell.com/cancer-cell/fulltext/S1535-6108(02)00133-2 …

          0 replies 1 retweet 0 likes
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        1. Atul Acharya‏ @AtulAcharya 29 Jun 2018
          Replying to @fchollet

          classic randomized "Dropout" ? or more emphatic surgical removal of nodes?

          0 replies 0 retweets 0 likes
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        2. Smerity‏ @Smerity 29 Jun 2018
          Replying to @fchollet

          Ablation studies are also how you can surprise yourself with a far simpler or more efficient implementation too :) Best of all, the faster your model runs, the quicker you can find such models as running many ablations is trivial ^_^

          1 reply 3 retweets 29 likes
        3. Smerity‏ @Smerity 29 Jun 2018
          Replying to @Smerity @fchollet

          Don't wait until your model is already complex for ablations either. The best accident I ever made was trying to improve @PyTorch's tutorial language model as I wanted it to remain relatively simple and fast for beginners. I kept looking for low hanging fruit until it was ~SotA.

          1 reply 1 retweet 17 likes
        4. Show replies
        1. Breno W. Carvalho‏ @Brenowsrca 13 Aug 2020
          Replying to @fchollet

          "old" but gold comment.

          0 replies 0 retweets 0 likes
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