# tensorflow::ops::SparseSegmentSumWithNumSegments

`#include <math_ops.h>`

Computes the sum along sparse segments of a tensor.

## Summary

Like `https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/ops/sparse-segment-sum#classtensorflow_1_1ops_1_1_sparse_segment_sum`, but allows missing ids in `segment_ids`. If an id is misisng, the `output` tensor at that position will be zeroed.

Read [the section on segmentation](https://tensorflow.org/api_docs/python/tf/sparse#Segmentation) for an explanation of segments.

For example:


```
c = tf.constant([[1,2,3,4], [-1,-2,-3,-4], [5,6,7,8]])
```

<br />


```
tf.sparse_segment_sum_with_num_segments(
    c, tf.constant([0, 1]), tf.constant([0, 0]), num_segments=3)
# => [[0 0 0 0]
#     [0 0 0 0]
#     [0 0 0 0]]
```

<br />


```
tf.sparse_segment_sum_with_num_segments(c,
                                        tf.constant([0, 1]),
                                        tf.constant([0, 2],
                                        num_segments=4))
# => [[ 1  2  3  4]
#     [ 0  0  0  0]
#     [-1 -2 -3 -4]
#     [ 0  0  0  0]]
```

<br />

Arguments:

- scope: A [Scope](https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope) object
- indices: A 1-D tensor. Has same rank as `segment_ids`.
- segment_ids: A 1-D tensor. Values should be sorted and can be repeated.
- num_segments: Should equal the number of distinct segment IDs.

<br />

Returns:

- `https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output`: Has same shape as data, except for dimension 0 which has size `num_segments`.

<br />

| ### Constructors and Destructors ||
|---|---|
| `https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/ops/sparse-segment-sum-with-num-segments#classtensorflow_1_1ops_1_1_sparse_segment_sum_with_num_segments_1aa42ca6fe6f82686ab6e7bf1696c6cf95(const ::https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope & scope, ::https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input data, ::https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input indices, ::https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input segment_ids, ::https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input num_segments)` ||

| ### Public attributes ||
|---|---|
| `https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/ops/sparse-segment-sum-with-num-segments#classtensorflow_1_1ops_1_1_sparse_segment_sum_with_num_segments_1aef731be5257efe05dd4fcab3b8bc1a97` | `https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/operation#classtensorflow_1_1_operation` |
| `https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/ops/sparse-segment-sum-with-num-segments#classtensorflow_1_1ops_1_1_sparse_segment_sum_with_num_segments_1a0268bacaeeeaa16b2034d2bbbce8fbe4` | `::https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output` |

| ### Public functions ||
|---|---|
| `https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/ops/sparse-segment-sum-with-num-segments#classtensorflow_1_1ops_1_1_sparse_segment_sum_with_num_segments_1a26167428eac960c8c69c07839a55d289() const ` | `::tensorflow::Node *` |
| `https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/ops/sparse-segment-sum-with-num-segments#classtensorflow_1_1ops_1_1_sparse_segment_sum_with_num_segments_1a59838fffe06404d59d3a86d7a1a664ab() const ` | ` `` ` |
| `https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/ops/sparse-segment-sum-with-num-segments#classtensorflow_1_1ops_1_1_sparse_segment_sum_with_num_segments_1a0540eaea9f382d555400bcda1f86c781() const ` | ` `` ` |

## Public attributes

### operation

```
Operation operation
```

### output

```
::tensorflow::Output output
```

## Public functions

### SparseSegmentSumWithNumSegments

```
 SparseSegmentSumWithNumSegments(
  const ::tensorflow::Scope & scope,
  ::tensorflow::Input data,
  ::tensorflow::Input indices,
  ::tensorflow::Input segment_ids,
  ::tensorflow::Input num_segments
)
```

### node

```
::tensorflow::Node * node() const 
```

### operator::tensorflow::Input

```
 operator::tensorflow::Input() const 
```

### operator::tensorflow::Output

```
 operator::tensorflow::Output() const 
```