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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 20 Feb 2020

      The number one thing to keep in mind about machine learning is that performance is evaluated on samples from one dataset, but the model is used in production on samples that may not necessarily follow the same characteristics...

      12 replies 158 retweets 662 likes
      Show this thread
    2. François Chollet‏Verified account @fchollet 20 Feb 2020

      The finance industry has a saying for this: "past performance is no guarantee of future results". Your model scoring X on your test dataset doesn't mean it will perform at level X on the next N situations it encounters in the real world. The future may not be like the past.

      4 replies 16 retweets 148 likes
      Show this thread
      François Chollet‏Verified account @fchollet 20 Feb 2020

      So when asking the question, "would you rather use a model that was evaluated as 90% accurate, or a human that was evaluated as 80% accurate", the answer depends on whether your data is typical per the evaluation process. Humans are adaptable, models are not.

      1:59 PM - 20 Feb 2020
      • 29 Retweets
      • 188 Likes
      • ... Jihen Amara Rama .....☄️ Sanjay Krishna Robin Beer jessie! 💙 kaalam.ai The ZEROth Particle🦇🔊
      7 replies 29 retweets 188 likes
        1. New conversation
        2. François Chollet‏Verified account @fchollet 20 Feb 2020

          If significant uncertainty is involved, go with the human. They may have inferior pattern recognition capabilities (versus models trained on enormous amounts of data), but they understand what they do, they can reason about it, and they can improvise when faced with novelty

          5 replies 12 retweets 115 likes
          Show this thread
        3. François Chollet‏Verified account @fchollet 20 Feb 2020

          If every possible situation is known and you want to prioritize scalability and cost-reduction, go with the model. Models exist to encode and operationalize human cognition in well-understood situations.

          2 replies 6 retweets 92 likes
          Show this thread
        4. François Chollet‏Verified account @fchollet 20 Feb 2020

          ("well understood" meaning either that it can be explicitly described by a programmer, or that you can amass a dataset that densely samples the distribution of possible situations -- which must be static)

          1 reply 3 retweets 63 likes
          Show this thread
        5. End of conversation
        1. Cristi Vicas‏ @cristi_vicas 20 Feb 2020
          Replying to @fchollet

          This is about the surgeon question? Tbh, after a point, it is all about manuality. I would totally submit myself to a robot surgeon (ex eye surgery is robotized) but keep the diagnosis and treatment plan to human expertize

          0 replies 0 retweets 0 likes
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        1. Beril Sirmacek  🦋 🇳🇱 🌱‏ @berilsirmacek 20 Feb 2020
          Replying to @fchollet @MarwaEldiwiny

          Models are adaptable too

          0 replies 0 retweets 2 likes
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        1. Fadi Badine‏ @fadibadine 20 Feb 2020
          Replying to @fchollet

          I think the real question was if you would want the AI surgeon to be illegal rather than which one to choose. It’s a tough question and I think it should be legal if everyone understands the risks involved in choosing one over the other

          0 replies 0 retweets 0 likes
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        1.  👉 ⭐️Thinker ⭐️ 👈‏ @ML_DL_eng 20 Feb 2020
          Replying to @fchollet

          The comparison between model and humans also depends on the intelligence of humans

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        1. Paulo Hubert‏ @hubertpaulo 20 Feb 2020
          Replying to @fchollet

          And how can we build models that are (more) adaptable? RL?

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        1. pedantic uncertaintist duck‏ @mathtick 20 Feb 2020
          Replying to @fchollet

          Accuracy is wrong measure for most real life problems. Survival then growth is correct target. Nothing to do with human vs ML though human writing code loses to human adapting in the game you describe. There is no ML! Only humans doing things at a distance.

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