Lesson6, when xs[0].shape changed?

Our first RNN!

Create inputs

len(xs), xs[0].shape
(8, (75110,))

but at:

Our first RNN with keras!

model.fit(np.concatenate(xs,axis=1), y, batch_size=64, nb_epoch=8)

(i was surprised that we can do “np.concatenate(xs,axis=1)”.)
So I did add xs[0].shape again, it becomes:
(75110, 1)

When did this happen???