Adding vs. concatenating positional embeddings & Learned positional encodings

When to add and when to concatenate positional embeddings? What are arguments for learning positional encodings? When to hand-craft them? Ms. Coffee Bean’s answers these questions in this video.
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Outline:
00:00 Concatenated vs. added positional embeddings
04:49 Learned positional embeddings
06:48 Ms. Coffee Bean deepest insight ever

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📺 Positional embeddings explained:    • Positional embeddings in transformers...  
📺 Fourier Transform instead of attention:    • FNet: Mixing Tokens with Fourier Tran...  
📺 Transformer explained:    • The Transformer neural network archit...  

Papers 📄:
Vaswani, Ashish, Noam Shazeer, Niki Parmar, Jakob Uszkoreit, Llion Jones, Aidan N. Gomez, Łukasz Kaiser, and Illia Polosukhin. "Attention is all you need." In Advances in neural information processing systems, pp. 5998-6008. 2017. https://proceedings.neurips.cc/paper/...

Wang, Yu-An, and Yun-Nung Chen. "What do position embeddings learn? an empirical study of pre-trained language model positional encoding." arXiv preprint arXiv:2010.04903 (2020). https://arxiv.org/pdf/2010.04903.pdf

Dosovitskiy, Alexey, Lucas Beyer, Alexander Kolesnikov, Dirk Weissenborn, Xiaohua Zhai, Thomas Unterthiner, Mostafa Dehghani et al. "An image is worth 16x16 words: Transformers for image recognition at scale." arXiv preprint arXiv:2010.11929 (2020). https://arxiv.org/abs/2010.11929

✍️ Arabic Subtitles by Ali Haidar Ahmad   / ali-ahmad-0706a51bb   .

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