results highlight the importance of previously overlooked design choices, and raise questions about the source
Nevertheless, in the vocabulary size growth in RoBERTa allows to encode almost any word or subword without using the unknown token, compared to BERT. This gives a considerable advantage to RoBERTa as the model can now more fully understand complex texts containing rare words.
This strategy is compared with dynamic masking in which different masking is generated every time we pass data into the model.
Attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads.
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It is also important to keep in mind that batch size increase results in easier parallelization through a special technique called “
The authors of the paper conducted research for finding an optimal way to model Descubra the next sentence prediction task. As a consequence, they found several valuable insights:
It more beneficial to construct input sequences by sampling contiguous sentences from a single document rather than from multiple documents. Normally, sequences are always constructed from contiguous full sentences of a single document so that the Completa length is at most 512 tokens.
a dictionary with one or several input Tensors associated to the input names given in the docstring:
This results in 15M and 20M additional parameters for BERT base and BERT large models respectively. The introduced encoding version in RoBERTa demonstrates slightly worse results than before.
Attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads.
Training with bigger batch sizes & longer sequences: Originally BERT is trained for 1M steps with a batch size of 256 sequences. In this paper, the authors trained the model with 125 steps of 2K sequences and 31K steps with 8k sequences of batch size.
Attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads.