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. 2023 May 4;10:e42714. doi: 10.2196/42714

Figure 2.

Figure 2

The long short-term memory cell can process data sequentially and keep its hidden state through time (reproduced from Chevalier [54], which is published under Creative Commons Attribution 4.0 International License [55]). c: memory cell; h: hidden state or output vector of the LSTM unit; x: input vector to the LSTM unit; tanh: activation function; subscript t indexes the time step.