Builds the Keras loss function corresponding to a name
# S3 method for ruta_loss_contraction
to_keras(x, learner, ...)# S3 method for ruta_loss_correntropy
to_keras(x, ...)
# S3 method for ruta_loss_variational
to_keras(x, learner, ...)
# S3 method for ruta_loss_named
to_keras(x, ...)
A function which returns the corresponding loss for given true and predicted values
A "ruta_loss_named" object
The learner object including the keras model which will use the loss function
Rest of parameters, ignored
Contractive loss: Deriving Contractive Autoencoder and Implementing it in Keras