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A step function that implements a training step for a feed forward network.

Inherits From: StandardInputStep

An instance of this class is intended to be used as a callable:

step = step_fn.StandardSingleLossStep(
    dataset, loss_fn, optimizer, distribution)

# Run a single training step on a given DistributionStrategy:

dataset_fn a function that returns a Dataset that produces the input for the model.
loss_fn a function that takes a context and inputs as arguments. It returns the loss for those inputs. context is an instance of values.MultiStepContext that will be passed when loss_fn is run. context can be used to specify the outputs to be returned from loss_fn, among other things.
optimizer an optimizer that implements an update rule.
distribution a DistributionStrategy object.




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Perform one step of this training algorithm.