Multiple Inputs, Multiple outputs Neural Network – Loss function and how to fit data

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Son Dinh asked 3 weeks ago

Hi,
I am working with a deep NN which takes inputs X_0, X_1 and give outputs Y_0, Y_1. So X_0 and X_1 will be concatenated before going into some hidden layers and giving outputs Y_0, Y_1. My problem is that:

  • I don’t know how to create a custom loss function, since Keras forces us to work with y_pred and y_true. I am not really sure how to get Y_0 and Y_1 from y_pred, but basically [Y_0, Y_1] = y_pred.
  • How do I fit data into this kind of model with multiple inputs, multiple outputs and custom loss function ?

Thanks very much !

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