0
我正在嘗試對順序編碼器解碼器模型進行排序,並且需要softmax使用最後一層來使用分類交叉熵。如何在LSTM返回keras序列時執行softmax?
我試着將最後一個LSTM層的激活設置爲'softmax',但似乎並沒有這樣做。添加另一個密集層並將激活設置爲softmax也無濟於事。當您的最後一個LSTM輸出序列時,執行softmax的正確方法是什麼?
inputs = Input(batch_shape=(batch_size, timesteps, input_dim), name='hella')
encoded = LSTM(latent_dim, return_sequences=True, stateful=False)(inputs)
encoded = LSTM(latent_dim, return_sequences=True, stateful=False)(encoded)
encoded = LSTM(latent_dim, return_sequences=True, stateful=False)(encoded)
encoded = LSTM(latent_dim, return_sequences=False)(encoded)
decoded = RepeatVector(timesteps)(encoded)
decoded = LSTM(input_dim, return_sequences=True)(decoded)
# do softmax here
sequence_autoencoder = Model(inputs, decoded)
sequence_autoencoder.compile(loss='categorical_crossentropy', optimizer='adam')