tensorflow:: ops:: SegmentSum

Computes the sum along segments of a tensor.

Summary

Read the section on segmentation for an explanation of segments.

Computes a tensor such that \(output_i = data_j\) where sum is over j such that segment_ids[j] == i .

If the sum is empty for a given segment ID i , output[i] = 0 .

For example:

c = tf.constant([[1,2,3,4], [4, 3, 2, 1], [5,6,7,8]])
tf.segment_sum(c, tf.constant([0, 0, 1]))
# ==> [[5, 5, 5, 5],
#      [5, 6, 7, 8]]

Args:

• scope: A Scope object
• segment_ids: A 1-D tensor whose size is equal to the size of data 's first dimension. Values should be sorted and can be repeated.

Returns:

• Output : Has same shape as data, except for dimension 0 which has size k , the number of segments.

Public attributes

Operation operation

::tensorflow::Output output

Public functions

 SegmentSum(
  const ::tensorflow::Scope & scope,
  ::tensorflow::Input data,
  ::tensorflow::Input segment_ids
)

::tensorflow::Node * node() const 

 operator::tensorflow::Input() const 

 operator::tensorflow::Output() const