bidirectional model

Machine Learning and Modeling
1

Can any one help me here with the problem of not building the model with bidirectional function:

forward_lstm <- layer_lstm(units = 64, return_sequences = T , input_shape = c(look_back, 2))
backward_lstm <- layer_lstm(units = 64, activation = "relu",
return_sequences = T, go_backwards = T)

b_model <- keras_model_sequential() %>%
bidirectional (layer = forward_lstm, backward_layer = backward_lstm, merge_mode = "concat") %>%

layer_dense(units = 16, activation = "relu") %>%

layer_dense(units = 1)

I am gettin this error

summary(b_model)
Model: <no summary available, model was not built>

thanks

2

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