No initialization of a0 in input to Bi-LSTM, week 3, ex 1

Hi DeepLearning Team:

I noticed that in previous lessons we made sure to initialize a0, as we do with c0 and s0 in this exercise. However in this assignment we create a bidirectional LSTM with one line and I can’s see how we initialize a<0>, and a<Tx+1> to zero, even though we discuss that in the notes and it is illustrated that way in the figure, “Figure 1: Neural machine translation with attention”.

Is the input set to zero by default if no vector is provided?

Thanks, David

When using LSTM, 0s are assumed when no value is provided for initial_state

Thanks Balaji.
That’s good to know!