Regularization

Embedding Dropout is equivalent to performing dropout on the embedding matrix at a word level, where the dropout is broadcast across all the word vector’s embedding. The remaining non-dropped-out word embeddings are scaled by $\frac{1}{1-p_{e}}$ where $p_{e}$ is the probability of embedding dropout. As the dropout occurs on the embedding matrix that is used for a full forward and backward pass, this means that all occurrences of a specific word will disappear within that pass, equivalent to performing variational dropout on the connection between the one-hot embedding and the embedding lookup.

Source: Merity et al, Regularizing and Optimizing LSTM Language Models

Source: A Theoretically Grounded Application of Dropout in Recurrent Neural Networks

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Component Type
Dropout
Regularization

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