# tensorflow::ops::SparseReduceSumSparse Class Reference

# tensorflow::ops::SparseReduceSumSparse

`#include <sparse_ops.h>`

Computes the sum of elements across dimensions of a SparseTensor.

## Summary

This Op takes a SparseTensor and is the sparse counterpart to `tf.reduce_sum()`. In contrast to [SparseReduceSum](https://www.tensorflow.org/versions/r2.2/api_docs/cc/class/tensorflow/ops/sparse-reduce-sum#classtensorflow_1_1ops_1_1_sparse_reduce_sum), this Op returns a SparseTensor.

Reduces `sp_input` along the dimensions given in `reduction_axes`. Unless `keep_dims` is true, the rank of the tensor is reduced by 1 for each entry in `reduction_axes`. If `keep_dims` is true, the reduced dimensions are retained with length 1.

If `reduction_axes` has no entries, all dimensions are reduced, and a tensor with a single element is returned. Additionally, the axes can be negative, which are interpreted according to the indexing rules in Python.

Arguments:

- scope: A [Scope](https://www.tensorflow.org/versions/r2.2/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope) object
- input_indices: 2-D. `N x R` matrix with the indices of non-empty values in a SparseTensor, possibly not in canonical ordering.
- input_values: 1-D. `N` non-empty values corresponding to `input_indices`.
- input_shape: 1-D. Shape of the input SparseTensor.
- reduction_axes: 1-D. Length-`K` vector containing the reduction axes.

<br />

Optional attributes (see `https://www.tensorflow.org/versions/r2.2/api_docs/cc/struct/tensorflow/ops/sparse-reduce-sum-sparse/attrs#structtensorflow_1_1ops_1_1_sparse_reduce_sum_sparse_1_1_attrs`):

- keep_dims: If true, retain reduced dimensions with length 1.

<br />

Returns:

- `https://www.tensorflow.org/versions/r2.2/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output` output_indices
- `https://www.tensorflow.org/versions/r2.2/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output` output_values
- `https://www.tensorflow.org/versions/r2.2/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output` output_shape

<br />

| ### Constructors and Destructors ||
|---|---|
| `https://www.tensorflow.org/versions/r2.2/api_docs/cc/class/tensorflow/ops/sparse-reduce-sum-sparse#classtensorflow_1_1ops_1_1_sparse_reduce_sum_sparse_1a6f708aa542de1f8a78354e33cd93ba1f(const ::https://www.tensorflow.org/versions/r2.2/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope & scope, ::https://www.tensorflow.org/versions/r2.2/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input input_indices, ::https://www.tensorflow.org/versions/r2.2/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input input_values, ::https://www.tensorflow.org/versions/r2.2/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input input_shape, ::https://www.tensorflow.org/versions/r2.2/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input reduction_axes)` ||
| `https://www.tensorflow.org/versions/r2.2/api_docs/cc/class/tensorflow/ops/sparse-reduce-sum-sparse#classtensorflow_1_1ops_1_1_sparse_reduce_sum_sparse_1a3993e307a94ec2d2689f821a60717e99(const ::https://www.tensorflow.org/versions/r2.2/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope & scope, ::https://www.tensorflow.org/versions/r2.2/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input input_indices, ::https://www.tensorflow.org/versions/r2.2/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input input_values, ::https://www.tensorflow.org/versions/r2.2/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input input_shape, ::https://www.tensorflow.org/versions/r2.2/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input reduction_axes, const https://www.tensorflow.org/versions/r2.2/api_docs/cc/struct/tensorflow/ops/sparse-reduce-sum-sparse/attrs#structtensorflow_1_1ops_1_1_sparse_reduce_sum_sparse_1_1_attrs & attrs)` ||

| ### Public attributes ||
|---|---|
| `https://www.tensorflow.org/versions/r2.2/api_docs/cc/class/tensorflow/ops/sparse-reduce-sum-sparse#classtensorflow_1_1ops_1_1_sparse_reduce_sum_sparse_1a163cffc8414946a47057a91af8be0e12` | `https://www.tensorflow.org/versions/r2.2/api_docs/cc/class/tensorflow/operation#classtensorflow_1_1_operation` |
| `https://www.tensorflow.org/versions/r2.2/api_docs/cc/class/tensorflow/ops/sparse-reduce-sum-sparse#classtensorflow_1_1ops_1_1_sparse_reduce_sum_sparse_1a2c546e86ac344ff2cc261c06aac187f4` | `::https://www.tensorflow.org/versions/r2.2/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output` |
| `https://www.tensorflow.org/versions/r2.2/api_docs/cc/class/tensorflow/ops/sparse-reduce-sum-sparse#classtensorflow_1_1ops_1_1_sparse_reduce_sum_sparse_1ad3c4282b03471d1e02bba7e17a46fca6` | `::https://www.tensorflow.org/versions/r2.2/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output` |
| `https://www.tensorflow.org/versions/r2.2/api_docs/cc/class/tensorflow/ops/sparse-reduce-sum-sparse#classtensorflow_1_1ops_1_1_sparse_reduce_sum_sparse_1a19b2438eeddfcd3e79017ecb5de54318` | `::https://www.tensorflow.org/versions/r2.2/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output` |

| ### Public static functions ||
|---|---|
| `https://www.tensorflow.org/versions/r2.2/api_docs/cc/class/tensorflow/ops/sparse-reduce-sum-sparse#classtensorflow_1_1ops_1_1_sparse_reduce_sum_sparse_1a8dbe087349a7dd3db345a7abd6752c3d(bool x)` | `https://www.tensorflow.org/versions/r2.2/api_docs/cc/struct/tensorflow/ops/sparse-reduce-sum-sparse/attrs#structtensorflow_1_1ops_1_1_sparse_reduce_sum_sparse_1_1_attrs` |

| ### Structs ||
|---|---|
| [tensorflow::ops::SparseReduceSumSparse::Attrs](https://www.tensorflow.org/versions/r2.2/api_docs/cc/struct/tensorflow/ops/sparse-reduce-sum-sparse/attrs) | Optional attribute setters for [SparseReduceSumSparse](https://www.tensorflow.org/versions/r2.2/api_docs/cc/class/tensorflow/ops/sparse-reduce-sum-sparse#classtensorflow_1_1ops_1_1_sparse_reduce_sum_sparse). |

## Public attributes

### operation

```
Operation operation
```

### output_indices

```
::tensorflow::Output output_indices
```

### output_shape

```
::tensorflow::Output output_shape
```

### output_values

```
::tensorflow::Output output_values
```

## Public functions

### SparseReduceSumSparse

```
 SparseReduceSumSparse(
  const ::tensorflow::Scope & scope,
  ::tensorflow::Input input_indices,
  ::tensorflow::Input input_values,
  ::tensorflow::Input input_shape,
  ::tensorflow::Input reduction_axes
)
```

### SparseReduceSumSparse

```
 SparseReduceSumSparse(
  const ::tensorflow::Scope & scope,
  ::tensorflow::Input input_indices,
  ::tensorflow::Input input_values,
  ::tensorflow::Input input_shape,
  ::tensorflow::Input reduction_axes,
  const SparseReduceSumSparse::Attrs & attrs
)
```

## Public static functions

### KeepDims

```
Attrs KeepDims(
  bool x
)
```