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AI & Machine Learning · Intermediate

Recurrent Neural Network (RNN)

A neural network that processes sequences by passing a hidden state from one step to the next.

Definition

RNNs handle variable-length sequential data such as text, speech and time series. Plain RNNs struggle with long-range dependencies because of vanishing gradients and cannot be parallelized across time steps, limitations that LSTMs, GRUs and ultimately transformers address.

Exam tip

Transformers replaced RNNs largely because attention parallelizes and captures long-range context.

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