Keras Backend Modeling Issue

Question

I am having an issue declaring my model. My inputs are x_input and y_input, and my outputs are predictions. As follows:

model = Model(inputs = [x_input, y_input]         


        

Answer 1

Did you tried wrapping the backend functions into a Lambda layer? I think there are some necessary operations within a Keras layer's __call__() method for a Keras Model to be properly built, which will not be executed if you call the backend functions directly.