5 técnicas simples para roberta pires
5 técnicas simples para roberta pires
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Ao longo da história, o nome Roberta possui sido Utilizado por várias mulheres importantes em variados áreas, e isso Pode vir a lançar uma ideia do Género de personalidade e carreira qual as vizinhos com esse nome podem vir a deter.
The problem with the original implementation is the fact that chosen tokens for masking for a given text sequence across different batches are sometimes the same.
The resulting RoBERTa model appears to be superior to its ancestors on top benchmarks. Despite a more complex configuration, RoBERTa adds only 15M additional parameters maintaining comparable inference speed with BERT.
The authors also collect a large new dataset ($text CC-News $) of comparable size to other privately used datasets, to better control for training set size effects
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model. Initializing with a config file does not load the weights associated with the model, only the configuration.
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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.
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The problem arises when we reach the end of a document. In this aspect, researchers compared whether it was worth stopping sampling sentences for such sequences or additionally sampling the first several sentences of the next document (and adding a corresponding separator token between documents). The results showed that the first option is better.
Attentions weights after the attention softmax, used to compute the weighted average in the self-attention heads.
From the BERT’s architecture we remember that during pretraining BERT performs language modeling by trying to predict a certain percentage of masked tokens.
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