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. 2021 Jul 11;21(14):4736. doi: 10.3390/s21144736

Table 4.

The hyper-parameters of the selected DL models.

Parameters NN RNN CNN LSTM
Number of hidden Layers 2 3 4 3
Units in hidden layers 68, 68 64, 64, 64 32, 64, 256, 128 128, 100, 64
Batch size 64 64 64 16
Hidden layer activation relu relu relu tanh
Output activation function sigmoid softmax sigmoid sigmoid
Dropout N/A 0.1 N/A 0.2
Optimizer Adam Adam Adam Adam