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For questions related to the transformer, which is a deep machine learning model introduced in 2017 in the paper "Attention Is All You Need", used primarily in the field of natural language processing (NLP).

16 votes
3 answers
4k views

Why are embeddings added, not concatenated?

Let's consider the following example from BERT I cannot understand why "the input embeddings are the sum of the token embeddings, the segmentation embeddings, and the position embeddings". The thing …
nalzok's user avatar
  • 361
2 votes
2 answers
2k views

What if we drop the causal mask in auto-regressive Transformer?

I understand the triangular causal mask in the attention is used to prevent tokens from "looking into the future", but why do we want to prevent that? Let's suppose we have a model with context length …
nalzok's user avatar
  • 361