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citnaj's profile
Jason Antic
Jason Antic
Jason Antic
@citnaj

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Jason Antic

@citnaj

Obsessively pursuing the perfection of image and video colorization/restoration using deep learning. Creator of DeOldify.

Ocean Beach, San Diego
deoldify.ai
Joined January 2010

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    1. Jason Antic‏ @citnaj Sep 2
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      1/ Random thought: Deep Learning model development has seemed to me to be a lot like cooking. Typical example: Images looking a little strange here? Train on this other loss to tone it down a bit. How much? Until it's done!

      6 replies 17 retweets 131 likes
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    2. Jason Antic‏ @citnaj Sep 2
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      2/ I'm not claiming this is typical. I really don't know. I'm in my own little world. But I can tell you this: From day one of getting into deep learning I viewed the endeavor as incredibly complex. Tackling incredibly complex things successfully requires different tools.

      1 reply 1 retweet 12 likes
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    3. Jason Antic‏ @citnaj Sep 2
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      3/ Here's the thing about high complexity: It's very easy to fool yourself into reaching wrong conclusions about cause/effect. In fact that's probably the norm. Why is that? Well a good part of that is that our working memory simply isn't equipped to deal many moving parts.

      1 reply 4 retweets 22 likes
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    4. Jason Antic‏ @citnaj Sep 2
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      4/ You've probably experienced the severe difficulty of trying to recall more than 7-8 digits that you've just seen. Now imagine that you're trying to reason about a system with millions of parameters, many more connections, and innumerable interactions with the outside world.

      1 reply 1 retweet 8 likes
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    5. Jason Antic‏ @citnaj Sep 2
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      5/ What's the answer to getting this complexity under control (somewhat)? Well good abstractions- ideally "lossless"- go a long way. Turning many things into one vastly reduces cognitive load and increases your chances of success.

      1 reply 2 retweets 9 likes
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    6. Jason Antic‏ @citnaj Sep 2
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      6/ This is why people who say "chemistry is just physics" or "biology is just chemistry" are not just being annoyingly reductionist, but are also quite frankly wrong. These abstracted levels of study are absolutely necessary if we are to make sense of the complexity.

      1 reply 1 retweet 16 likes
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    7. Jason Antic‏ @citnaj Sep 2
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      7/ Hence when I set out to deal with deep learning, I didn't think just digging deep into math and trying to view everything from that lens was going to get me far. For one, I'm just ok with math. Passable. It'd be a big, non-motivating uphill battle.

      1 reply 3 retweets 5 likes
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    8. Jason Antic‏ @citnaj Sep 2
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      8/ But more importantly, I thought it would be much more productive to focus on honing in on the abstractions of the immense complexity you're dealing with. That is, to develop the skill of being able to intuit the interactions of the system at a high level.

      1 reply 2 retweets 11 likes
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    9. Jason Antic‏ @citnaj Sep 2
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      9/ What does that even look like? Well first I think @fastdotai gives a great foundation for that, as they start with big picture abstractions that were clearly hard-earned and passed on to the students as very easy to digest. That was huge for me.

      1 reply 2 retweets 10 likes
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    10. Jason Antic‏ @citnaj Sep 2
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      10/ This is in contrast to the bottom up method that you see in fields like math, where the reward of actually using it practically and intuitively never seems in your grasp until years down the road.

      2 replies 2 retweets 6 likes
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      Jason Antic‏ @citnaj Sep 2
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      11/ But another key component is simply bludgeoning yourself with hard earned experience. You can't help but pick up on insightful patterns if you keep paying attention to what you think is going to happen vs what actually happens in your models.

      6:20 PM - 2 Sep 2020
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      • Rumanu Avio Coste #Masks4All Darius-Petrișor Christian Langreiter President-Elect jack Lord oatkon Maxime Lenormand Read Kraus
      1 reply 2 retweets 6 likes
        1. New conversation
        2. Jason Antic‏ @citnaj Sep 2
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          12/ I think this is pretty similar to what Malcolm Gladwell describes in the book "Blink", which famously describes the now somewhat derided 10,000 hour rule of achieving expertise.

          1 reply 1 retweet 3 likes
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        3. Jason Antic‏ @citnaj Sep 2
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          13/ The definition of expertise in that book though I think is great: That you start as a novice by carefully overthinking every step and sticking to "recipes" without necessarily understanding the tasks of a field when first starting out.

          1 reply 1 retweet 10 likes
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        4. Jason Antic‏ @citnaj Sep 2
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          14/ But then gradually, you switch from the "recipes" to more of a reliance on "pattern recognition". Pattern recognition, or "intuition", seems to be developed in a way that seems analogous to neural networks: You just have to keep incrementing with good real world feedback!

          1 reply 2 retweets 15 likes
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        5. End of conversation

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