Keras 辍学训练参数

我希望在LSTM层中使用辍学，用于培训和测试。根据本文：

我得到的错误是：

TypeError: ('Keyword argument not understood:', 'training')

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你知道如何解决这个问题吗？

使用函数格式

inp = Input(shape=(X_len, 1))
x = LSTM(X_len, return_sequences = True)(inp)
x = Dropout(rate=0.2)(x, training=True)
x = LSTM(X_len)(x)
x = Dropout(rate=0.2)(x, training=True)
out = Dense(Y_len)(x)

model = Model(inp, out)
model.compile('adam', 'mse')
model.summary()

inp = Input(shape=(X_len, 1))
x = LSTM(X_len, return_sequences = True)(inp)
x = Dropout(rate=0.2)(x, training=True)
x = LSTM(X_len)(x)
x = Dropout(rate=0.2)(x, training=True)
out = Dense(Y_len)(x)

model = Model(inp, out)
model.compile('adam', 'mse')
model.summary()