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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. Seb D‏ @sebd_d 25 May 2019
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      Replying to @jeremyphoward

      Thanks @jeremyphoward for the shout out!

      1 reply 0 retweets 0 likes
    2. Mikhail Grankin‏ @mgrankin 27 May 2019
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      Replying to @sebd_d @jeremyphoward

      I've tried to add symmetry to SelfAttention, a very minor improvement if any.https://github.com/mgrankin/SimpleSelfAttention/blob/master/Imagenette%20Simple%20Symmetric%20Self%20Attention.ipynb …

      2 replies 0 retweets 1 like
    3. Seb D‏ @sebd_d 31 May 2019
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      Replying to @mgrankin @jeremyphoward

      I updated the repo, added your symmetry hack, thank you!

      1 reply 0 retweets 1 like
    4. Mikhail Grankin‏ @mgrankin 17 Jun 2019
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      Replying to @sebd_d @jeremyphoward

      Have you seen that paper? I believe Simple Self-Attention would work even better. https://arxiv.org/pdf/1906.05909.pdf …

      2 replies 0 retweets 2 likes
    5. Seb D‏ @sebd_d 21 Jun 2019
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      Replying to @mgrankin @jeremyphoward

      @mgrankin , you might be interested in the modification I made to Simple Self-Attention (currently in the xresnet file in my repo). One small change in order of operation is making it much faster and probably less sensitive to image size.

      2 replies 0 retweets 1 like
    6. Mikhail Grankin‏ @mgrankin 13 Aug 2019
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      Replying to @sebd_d @jeremyphoward

      I've made an injection of Simple Self-Attention layer to a pretrained Resnet. It could be more practical to use it that way. It works good, although it is hard to tell is it really better than plain Resnet. https://github.com/mgrankin/SimpleSelfAttention/blob/master/pretrained.py …pic.twitter.com/KibuEamHMP

      3 replies 3 retweets 8 likes
    7. Jason Antic‏ @citnaj 13 Aug 2019
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      Replying to @mgrankin @jeremyphoward

      Have you been tracking gamma? You'll want to train until that levels off a bit. Self-attention tends to take a while to train. I'm also curious how this compares to PooledSelfAttention (in FastAI library). I've been using that lately and it's next level for me.

      2 replies 0 retweets 2 likes
    8. Mikhail Grankin‏ @mgrankin 13 Aug 2019
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      Replying to @citnaj @jeremyphoward

      Which gamma?

      1 reply 0 retweets 0 likes
    9. Jason Antic‏ @citnaj 13 Aug 2019
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      Replying to @mgrankin @jeremyphoward

      In the self-attention forward: o = self.gamma * o + x . i.e. the weighting of attention.

      2 replies 0 retweets 1 like
    10. Mikhail Grankin‏ @mgrankin 20 Aug 2019
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      Replying to @citnaj @jeremyphoward

      I've caught a huge bug in my code, thanks to your suggestion. Now, it really works.

      1 reply 0 retweets 3 likes
      Jason Antic‏ @citnaj 20 Aug 2019
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      Replying to @mgrankin @jeremyphoward

      Oh! Are you getting different results now?

      6:35 AM - 20 Aug 2019
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      • Mikhail Grankin Seb D
      1 reply 0 retweets 2 likes
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        1. Mikhail Grankin‏ @mgrankin 21 Aug 2019
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          Replying to @citnaj @jeremyphoward

          I don't see any difference in the results. But at least it's training now, gamma was zero before.

          1 reply 0 retweets 2 likes
        2. Seb D‏ @sebd_d 21 Aug 2019
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          Replying to @mgrankin @citnaj @jeremyphoward

          That 94.4% you got on epoch 5 is interesting. I'm gonna give this a try, Thanks for sharing!

          1 reply 0 retweets 2 likes
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