streaming.py 文件源码

def __call__(self, values, weights=None, scope=None):
        """Computes the streaming average.

        This method builds the fragment of computational graph that computes the streaming
        average, returnins a variable representing the actual streaming average value and
        an `Op` to update such value.

        Arguments:
          values: a `Tensor` of arbitrary dimensions.
          weights: pptional `Tensor` whose rank is either `0`, or the same rank
            as values, and must be broadcastable to values (i.e., all dimensions must
            be either `1`, or the same as the corresponding values dimension). It contains
            the weights for summing up all the elements in `values`.
          scope: a `str`  or a `tf.VariableScope` used for building the fragment
            of the computational graph that computes the streaming average.

        Returns:
          mean: a `Tensor` representing the current mean, which is a reference
            to `self.value`.
          update_op: an `Op` that updates the streaming value, which is a reference
            to `self.update_op`.
        """
        self.compute(values, weights=weights, scope=scope)
        return self.value, self.update_op