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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. Shawn Presser‏ @theshawwn 31 Dec 2019
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      I'm starting to think loss is harmful. Our loss has been a flat 2.2 for the past five days training GPT-2 1.5B. Yet according to human testing, it's been getting noticeably better every day. It's now good enough to amuse /r/dota2:https://www.reddit.com/r/DotA2/comments/ei505v/ive_been_working_on_an_rdota2_simulator_its_like/ …

      8 replies 7 retweets 48 likes
      Show this thread
    2. FlyingOctopus0‏ @FlyingOctopus0 Jan 1
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      Replying to @theshawwn @heghbalz

      This would suggest that the weights still travel to "better" arrangement despite near constant loss. I thought that at that point it's more of a random walk.

      1 reply 0 retweets 1 like
    3. Hamid EBZD‏ @heghbalz Jan 1
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      Replying to @FlyingOctopus0 @theshawwn

      Isn't it why we have eval measures rather than the loss e.g, accuracy, F1, FID, etc? To tell us how *good* the weights are? In GANs at least this is normal not to trust much the avg loss, and look at eval measures.

      1 reply 0 retweets 1 like
    4. Shawn Presser‏ @theshawwn Jan 2
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      Replying to @heghbalz @FlyingOctopus0

      Notably, @citnaj doesn’t really pay attention to loss or eval metrics for DeOldify. The only way to test it is to look at it and see. I think this idea is upsetting to people who want to believe everything can be automated. (It upsets me.) But it seems true.

      3 replies 0 retweets 5 likes
      Jason Antic‏ @citnaj Jan 2
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      Replying to @theshawwn @heghbalz @FlyingOctopus0

      2/ Generally speaking, I really think we should be skeptical of simple measures in life. What can be measured isn't necessarily what's important, though it's easy to fixate on because it's simple. The consequences for ignoring the problems with this I think are profound.

      7:56 AM - 2 Jan 2020
      • 4 Likes
      • aydao Shawn Presser Harland Duman Slobodan Blazheski
      0 replies 0 retweets 4 likes

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