How to add Dropout in Keras functional model?

Question

Let's say I have an LSTM layer in Keras like this:

x = Input(shape=(input_shape), dtype='int32')

x = LSTM(128,return_sequences=True)(x)

Now I am trying to add Dropout to this layer using:

X = Dropout(0.5)

but this gives error, which I am assuming the above line is redefining X instead of adding Dropout to it. How to fix this?

Answer 1

Just add x = Dropout(0.5)(x) like this:

x = Input(shape=(input_shape), dtype='int32')
x = LSTM(128,return_sequences=True)(x)
x = Dropout(0.5)(x)