What should be the correct dimension of output of attention layer?





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I building a LSTM+attention layer model. According to my understanding attention layer assigns weights to each word of the input sequence. Therefore, the output of attention layer should be (None,280). However, I am getting (None,240), which means that attention layer is learning attention over hidden states of the LSTM.



Where am I going wrong here?



MAX_SEQUENCE_LENGTH=140
EMBEDDING_DIM = 300
model = Sequential()
model.add(Embedding(len(word_index) + 1,
EMBEDDING_DIM,
weights=[embedding_matrix],
input_length=MAX_SEQUENCE_LENGTH,
trainable=False))


model.add(Bidirectional(CuDNNLSTM(120, return_sequences=True), input_shape=
(train_X.shape[1], EMBEDDING_DIM)))
model.add(Attention(MAX_SEQUENCE_LENGTH))
# model.add(Flatten())
model.add(Dense(100,activation='relu'))
model.add(Dense(1, activation='sigmoid'))
print(model.summary())




Layer (type) --- Output Shape --- Param #



embedding_1 (Embedding) ---- (None, 140, 300) --- 45720000





bidirectional_1 (Bidirection (None, 140, 240) --- 405120





attention_1 (Attention) --- (None, 240) --- 380





dense_1 (Dense) --- (None, 100) --- 24100





dense_2 (Dense) --- (None, 1) --- 101



Total params: 46,149,701
Trainable params: 429,701
Non-trainable params: 45,720,000





None










share|improve this question























  • did you get the answer to your question?

    – sariii
    9 hours ago


















0















I building a LSTM+attention layer model. According to my understanding attention layer assigns weights to each word of the input sequence. Therefore, the output of attention layer should be (None,280). However, I am getting (None,240), which means that attention layer is learning attention over hidden states of the LSTM.



Where am I going wrong here?



MAX_SEQUENCE_LENGTH=140
EMBEDDING_DIM = 300
model = Sequential()
model.add(Embedding(len(word_index) + 1,
EMBEDDING_DIM,
weights=[embedding_matrix],
input_length=MAX_SEQUENCE_LENGTH,
trainable=False))


model.add(Bidirectional(CuDNNLSTM(120, return_sequences=True), input_shape=
(train_X.shape[1], EMBEDDING_DIM)))
model.add(Attention(MAX_SEQUENCE_LENGTH))
# model.add(Flatten())
model.add(Dense(100,activation='relu'))
model.add(Dense(1, activation='sigmoid'))
print(model.summary())




Layer (type) --- Output Shape --- Param #



embedding_1 (Embedding) ---- (None, 140, 300) --- 45720000





bidirectional_1 (Bidirection (None, 140, 240) --- 405120





attention_1 (Attention) --- (None, 240) --- 380





dense_1 (Dense) --- (None, 100) --- 24100





dense_2 (Dense) --- (None, 1) --- 101



Total params: 46,149,701
Trainable params: 429,701
Non-trainable params: 45,720,000





None










share|improve this question























  • did you get the answer to your question?

    – sariii
    9 hours ago














0












0








0








I building a LSTM+attention layer model. According to my understanding attention layer assigns weights to each word of the input sequence. Therefore, the output of attention layer should be (None,280). However, I am getting (None,240), which means that attention layer is learning attention over hidden states of the LSTM.



Where am I going wrong here?



MAX_SEQUENCE_LENGTH=140
EMBEDDING_DIM = 300
model = Sequential()
model.add(Embedding(len(word_index) + 1,
EMBEDDING_DIM,
weights=[embedding_matrix],
input_length=MAX_SEQUENCE_LENGTH,
trainable=False))


model.add(Bidirectional(CuDNNLSTM(120, return_sequences=True), input_shape=
(train_X.shape[1], EMBEDDING_DIM)))
model.add(Attention(MAX_SEQUENCE_LENGTH))
# model.add(Flatten())
model.add(Dense(100,activation='relu'))
model.add(Dense(1, activation='sigmoid'))
print(model.summary())




Layer (type) --- Output Shape --- Param #



embedding_1 (Embedding) ---- (None, 140, 300) --- 45720000





bidirectional_1 (Bidirection (None, 140, 240) --- 405120





attention_1 (Attention) --- (None, 240) --- 380





dense_1 (Dense) --- (None, 100) --- 24100





dense_2 (Dense) --- (None, 1) --- 101



Total params: 46,149,701
Trainable params: 429,701
Non-trainable params: 45,720,000





None










share|improve this question














I building a LSTM+attention layer model. According to my understanding attention layer assigns weights to each word of the input sequence. Therefore, the output of attention layer should be (None,280). However, I am getting (None,240), which means that attention layer is learning attention over hidden states of the LSTM.



Where am I going wrong here?



MAX_SEQUENCE_LENGTH=140
EMBEDDING_DIM = 300
model = Sequential()
model.add(Embedding(len(word_index) + 1,
EMBEDDING_DIM,
weights=[embedding_matrix],
input_length=MAX_SEQUENCE_LENGTH,
trainable=False))


model.add(Bidirectional(CuDNNLSTM(120, return_sequences=True), input_shape=
(train_X.shape[1], EMBEDDING_DIM)))
model.add(Attention(MAX_SEQUENCE_LENGTH))
# model.add(Flatten())
model.add(Dense(100,activation='relu'))
model.add(Dense(1, activation='sigmoid'))
print(model.summary())




Layer (type) --- Output Shape --- Param #



embedding_1 (Embedding) ---- (None, 140, 300) --- 45720000





bidirectional_1 (Bidirection (None, 140, 240) --- 405120





attention_1 (Attention) --- (None, 240) --- 380





dense_1 (Dense) --- (None, 100) --- 24100





dense_2 (Dense) --- (None, 1) --- 101



Total params: 46,149,701
Trainable params: 429,701
Non-trainable params: 45,720,000





None







deep-learning attention-model






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asked Jan 4 at 7:48









Samarth AgrawalSamarth Agrawal

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  • did you get the answer to your question?

    – sariii
    9 hours ago



















  • did you get the answer to your question?

    – sariii
    9 hours ago

















did you get the answer to your question?

– sariii
9 hours ago





did you get the answer to your question?

– sariii
9 hours ago












0






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