Keras - Lambda Layers


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Lambda is used to transform the input data using an expression or function. For example, if Lambda with expression lambda x: x ** 2 is applied to a layer, then its input data will be squared before processing.

RepeatVector has four arguments and it is as follows −

keras.layers.Lambda(function, output_shape = None, mask = None, arguments = None)
  • function represent the lambda function.

  • output_shape represent the shape of the transformed input.

  • mask represent the mask to be applied, if any.

  • arguments represent the optional argument for the lamda function as dictionary.

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