roberta - Uma visão geral
roberta - Uma visão geral
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If you choose this second option, there are three possibilities you can use to gather all the input Tensors
The original BERT uses a subword-level tokenization with the vocabulary size of 30K which is learned after input preprocessing and using several heuristics. RoBERTa uses bytes instead of unicode characters as the base for subwords and expands the vocabulary size up to 50K without any preprocessing or input tokenization.
It happens due to the fact that reaching the document boundary and stopping there means that an input sequence will contain less than 512 tokens. For having a similar number of tokens across all batches, the batch size in such cases needs to be augmented. This leads to variable batch size and more complex comparisons which researchers wanted to avoid.
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Additionally, RoBERTa uses a dynamic masking technique during training that helps the model learn more robust and generalizable representations of words.
One key difference between RoBERTa and BERT is that RoBERTa was trained on a much larger dataset and using a more effective training procedure. In particular, RoBERTa was trained on a dataset of 160GB of text, which is more than 10 times larger than the dataset used to train BERT.
This is useful if you want more control over how to convert input_ids indices into associated vectors
This is useful if you want more control over how to convert input_ids indices into associated vectors
Recent advancements in NLP showed that increase of the batch size with the appropriate decrease of the learning rate and the number of training steps usually tends to improve the model’s performance.
training data size. We find that BERT was significantly undertrained, and can match or Saiba mais exceed the performance of
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This is useful if you want more control over how to convert input_ids indices into associated vectors