Dropout layer - Keras
https://keras.io/api/layers/regularization_layers/dropouttf.keras.layers.Dropout(rate, noise_shape=None, seed=None, **kwargs) Applies Dropout to the input. The Dropout layer randomly sets input units to 0 with a frequency of rate at each step during training time, which helps prevent overfitting. Inputs not set to 0 are scaled up by 1/ (1 - rate) such that the sum over all inputs is unchanged.