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Keras Time Series Transformer

I have this code from Keras time series classification with a Transformer model:

def transformer_encoder(inputs, head_size, num_heads, ff_dim, dropout=0):
    # Attention and Normalization
    x = layers.MultiHeadAttention(
        key_dim=head_size,
        num_heads=num_heads,
        dropout=dropout)(inputs, inputs)
    x = layers.Dropout(dropout)(x)
    x = layers.LayerNormalization(epsilon=1e-6)(x)

    res = x + inputs

    # Feed Forward Part
    x = layers.Conv1D(filters=ff_dim, kernel_size=1, activation="relu")(res)
    x = layers.Dropout(dropout)(x)
    x = layers.Conv1D(filters=inputs.shape[-1], kernel_size=1)(x)
    x = layers.LayerNormalization(epsilon=1e-6)(x)

    return x + res

If I try to change the Conv1D to ConvLSTM1D layer, I get this error:

Input 0 of layer "conv_lstm1d_27" is incompatible with the layer: expected ndim=4, found ndim=3. Full shape received: (None, 24, 4)

I changed the shape of dataset to (1354, 4, 24, 10) but it doesn't help. I can't understand the issue with shape and dimensions here.



source https://stackoverflow.com/questions/73471864/keras-time-series-transformer
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