Just your regular densely-connected NN layer.

Dense層就是所謂的全連接神經(jīng)網(wǎng)絡(luò)層

# as first layer in a sequential model:
model = Sequential()
model.add(Dense(32, input_shape=(16,)))
# now the model will take as input arrays of shape (*, 16)
# and output arrays of shape (*, 32)

# after the first layer, you don't need to specify
# the size of the input anymore:
model.add(Dense(32))

第一層需要指定輸入形狀，以對(duì)接輸入數(shù)據(jù)的形狀，比如以(16,)對(duì)接(*,16)形狀的數(shù)據(jù)。