reduce_sum

dragon.vm.tensorflow.math.reduce_sum(
  input_tensor,
  axis=None,
  keepdims=False,
  name=None
)[source]

Compute the sum value of elements along the given axis.

The argument axis could be negative or None:

x = tf.constant([[1, 2, 3], [4, 5, 6]])

# A negative axis is the last-k axis
print(tf.math.reduce_sum(x, 1))
print(tf.math.reduce_sum(x, -1))  # Equivalent

# If ``axis`` is None, the vector-style reduction
# will be applied to return a scalar result
print(tf.math.reduce_sum(x))  # Result is 21

# Also, ``axis`` could be a sequence of integers
print(tf.math.reduce_sum(x, [0, 1]))  # Result is 21
Parameters:
  • input_tensor (dragon.Tensor) – The input tensor.
  • axis (Union[int, Sequence[int]], optional) – The axis to reduce.
  • keepdims (bool, optional, default=False) – Keep the reduced dimensions or not.
  • name (str, optional) – The operation name.
Returns:

dragon.Tensor – The output tensor.