In the future we may use this object to add more information about result of
run without changing the Hook API.
Args
results
The return values from Session.run() corresponding to the fetches
attribute returned in the RunArgs. Note that this has the same shape as
the RunArgs fetches. For example:
fetches = global_step_tensor
=> results = nparray(int)
fetches = [train_op, summary_op, global_step_tensor]
=> results = [None, nparray(string), nparray(int)]
fetches = {'step': global_step_tensor, 'summ': summary_op}
=> results = {'step': nparray(int), 'summ': nparray(string)}