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GaryMarcus's profile
Gary Marcus
Gary Marcus
Gary Marcus
@GaryMarcus

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Gary Marcus

@GaryMarcus

CEO/Founder of http://Robust.AI ; cognitive scientist, and best-selling author. New book: http://Rebooting.AI : Building Artificial Intelligence We Can Trust

garymarcus.com
Joined December 2010

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    1. Grace Lindsay‏ @neurograce Nov 28
      • Report Tweet
      Replying to @chophshiy @GaneshNatesh and

      The success of CNNs in predicting the response of real visual neurons (and similar findings for audition) suggest they are going in the right direction wrt getting the logic right. But yea just cuz you hook some artificial neurons up doesnt mean they'll always work like the brain

      1 reply 0 retweets 7 likes
    2. Gary Marcus‏ @GaryMarcus Nov 28
      • Report Tweet
      Replying to @neurograce @chophshiy and

      agreed with @neurograce, e only additional point I am making here is that we ought have some humility here, 33 years after White et al's 1986 landmark worm connectome, which in honesty we must recognize we have not yet fully understood. read it, and weep: https://royalsocietypublishing.org/doi/abs/10.1098/rstb.1986.0056 …

      1 reply 0 retweets 2 likes
    3. Katja‏ @kateiyas Nov 28
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      Replying to @GaryMarcus @neurograce and

      @neurograce has written this excellent article on the DNNs + visual system comparisons:https://neurdiness.wordpress.com/2018/05/17/deep-convolutional-neural-networks-as-models-of-the-visual-system-qa/ …

      2 replies 3 retweets 10 likes
    4. Gary Marcus‏ @GaryMarcus Nov 28
      • Report Tweet
      Replying to @kateiyas @neurograce and

      this is a good QA but the query about what visual system has that CNNs lack also include compositionality, ability to recognize line drawings, silhouettes, and other abstractions even without explicit training data, ability to infer relationships between objects, etc

      1 reply 0 retweets 1 like
    5. Grace Lindsay‏ @neurograce Nov 29
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      Replying to @GaryMarcus @kateiyas and

      Sure it could include those too, which people are also working on. I wrote it before the bulk of the work, eg, showing that CNNs respond more to texture than shape, but that's something people have already found ways of countering.

      2 replies 0 retweets 3 likes
    6. Grace Lindsay‏ @neurograce Nov 29
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      Replying to @neurograce @GaryMarcus and

      And to be clear, a standard AlexNet is not *catastrophic* on silhouettes or line drawings, it isnt as good as humans (chance here is 1/16) and this paper introduces training that can help with that https://arxiv.org/abs/1811.12231 pic.twitter.com/zRHHTiKuYX

      3 replies 0 retweets 9 likes
    7. Dan Goodman‏ @neuralreckoning Nov 29
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      Replying to @neurograce @GaryMarcus and

      One of my final year undergrads looked at something similar to this. Interestingly, he did edge detection with the other colour scheme (white lines on black) and found that almost all the big models mistook line drawings for spider webs or fountains for what seem obvious reasonspic.twitter.com/ofjGkI0LOC

      1 reply 0 retweets 4 likes
    8. Gary Marcus‏ @GaryMarcus Nov 29
      • Report Tweet
      Replying to @neuralreckoning @neurograce and

      written up?

      1 reply 0 retweets 0 likes
    9. Dan Goodman‏ @neuralreckoning Nov 29
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      Replying to @GaryMarcus @neurograce and

      Unfortunately not.

      1 reply 0 retweets 0 likes
    10. Dan Goodman‏ @neuralreckoning Nov 29
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      Replying to @neuralreckoning @GaryMarcus and

      It's a particularly nice demo, but basically not a new point. Was already well understood that most of these models are dominated by texture over shape.

      1 reply 0 retweets 1 like
      Gary Marcus‏ @GaryMarcus Nov 29
      • Report Tweet
      Replying to @neuralreckoning @neurograce and

      it’s exactly the sort of thing that should be added to #10 in @neurograce’s otherwise excellent FAQ.

      5:27 AM - 29 Nov 2019
      • 1 Like
      • Grace Lindsay
      1 reply 0 retweets 1 like
        1. New conversation
        2. Grace Lindsay‏ @neurograce Nov 29
          • Report Tweet
          Replying to @GaryMarcus @neuralreckoning and

          Itll be in the upcoming review!

          1 reply 0 retweets 3 likes
        3. Arseny Khakhalin‏ @ampanmdagaba Nov 29
          • Report Tweet
          Replying to @neurograce @GaryMarcus and

          Interestingly, most ancient hardwired recognition systems in our brain (visual neurons of the pulvinar) also rely on texture and not shape. ANNs are just a few millennia behind, that's all.

          0 replies 0 retweets 3 likes
        4. End of conversation

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