我以为mask_zero=True当输入值为0时将输出0,因此以下各层可能会跳过计算或其他操作。
如何mask_zero运作?
例:
data_in = np.array([
[1, 2, 0, 0]
])
data_in.shape
>>> (1, 4)
# model
x = Input(shape=(4,))
e = Embedding(5, 5, mask_zero=True)(x)
m = Model(inputs=x, outputs=e)
p = m.predict(data_in)
print(p.shape)
print(p)
Run Code Online (Sandbox Code Playgroud)
实际输出为:(数字是随机的)
(1, 4, 5)
[[[ 0.02499047 0.04617121 0.01586803 0.0338897 0.009652 ]
[ 0.04782704 -0.04035913 -0.0341589 0.03020919 -0.01157228]
[ 0.00451764 -0.01433611 0.02606953 0.00328832 0.02650392]
[ 0.00451764 -0.01433611 0.02606953 0.00328832 0.02650392]]]
Run Code Online (Sandbox Code Playgroud)
但是,我认为输出将是:
[[[ 0.02499047 0.04617121 0.01586803 0.0338897 0.009652 ]
[ 0.04782704 -0.04035913 -0.0341589 0.03020919 …Run Code Online (Sandbox Code Playgroud)