# tensorflow::ops::ApplyAdadelta

`#include <training_ops.h>`

Update '\*var' according to the adadelta scheme.

## Summary

accum = rho() \* accum + (1 - rho()) \* grad.square(); update = (update_accum + epsilon).sqrt() \* (accum + epsilon()).rsqrt() \* grad; update_accum = rho() \* update_accum + (1 - rho()) \* update.square(); var -= update;

Args:

- scope: A [Scope](https://www.tensorflow.org/versions/r2.12/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope) object
- var: Should be from a Variable().
- accum: Should be from a Variable().
- accum_update: Should be from a Variable().
- lr: Scaling factor. Must be a scalar.
- rho: Decay factor. Must be a scalar.
- epsilon: Constant factor. Must be a scalar.
- grad: The gradient.

<br />

Optional attributes (see `https://www.tensorflow.org/versions/r2.12/api_docs/cc/struct/tensorflow/ops/apply-adadelta/attrs#structtensorflow_1_1ops_1_1_apply_adadelta_1_1_attrs`):

- use_locking: If True, updating of the var, accum and update_accum tensors will be protected by a lock; otherwise the behavior is undefined, but may exhibit less contention.

<br />

Returns:

- `https://www.tensorflow.org/versions/r2.12/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output`: Same as "var".

<br />

| ### Constructors and Destructors ||
|---|---|
| `https://www.tensorflow.org/versions/r2.12/api_docs/cc/class/tensorflow/ops/apply-adadelta#classtensorflow_1_1ops_1_1_apply_adadelta_1aa28344b035c47c459fd0afca95547d97(const ::https://www.tensorflow.org/versions/r2.12/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope & scope, ::https://www.tensorflow.org/versions/r2.12/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input var, ::https://www.tensorflow.org/versions/r2.12/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input accum, ::https://www.tensorflow.org/versions/r2.12/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input accum_update, ::https://www.tensorflow.org/versions/r2.12/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input lr, ::https://www.tensorflow.org/versions/r2.12/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input rho, ::https://www.tensorflow.org/versions/r2.12/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input epsilon, ::https://www.tensorflow.org/versions/r2.12/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input grad)` ||
| `https://www.tensorflow.org/versions/r2.12/api_docs/cc/class/tensorflow/ops/apply-adadelta#classtensorflow_1_1ops_1_1_apply_adadelta_1a08f5d27287a3064abb5e3b83fadbe887(const ::https://www.tensorflow.org/versions/r2.12/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope & scope, ::https://www.tensorflow.org/versions/r2.12/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input var, ::https://www.tensorflow.org/versions/r2.12/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input accum, ::https://www.tensorflow.org/versions/r2.12/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input accum_update, ::https://www.tensorflow.org/versions/r2.12/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input lr, ::https://www.tensorflow.org/versions/r2.12/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input rho, ::https://www.tensorflow.org/versions/r2.12/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input epsilon, ::https://www.tensorflow.org/versions/r2.12/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input grad, const https://www.tensorflow.org/versions/r2.12/api_docs/cc/struct/tensorflow/ops/apply-adadelta/attrs#structtensorflow_1_1ops_1_1_apply_adadelta_1_1_attrs & attrs)` ||

| ### Public attributes ||
|---|---|
| `https://www.tensorflow.org/versions/r2.12/api_docs/cc/class/tensorflow/ops/apply-adadelta#classtensorflow_1_1ops_1_1_apply_adadelta_1a4bcd49cd72b4103e0041a1231ad7cbfb` | `https://www.tensorflow.org/versions/r2.12/api_docs/cc/class/tensorflow/operation#classtensorflow_1_1_operation` |
| `https://www.tensorflow.org/versions/r2.12/api_docs/cc/class/tensorflow/ops/apply-adadelta#classtensorflow_1_1ops_1_1_apply_adadelta_1aaa46dd79340e6999dac483165b45499d` | `::https://www.tensorflow.org/versions/r2.12/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output` |

| ### Public functions ||
|---|---|
| `https://www.tensorflow.org/versions/r2.12/api_docs/cc/class/tensorflow/ops/apply-adadelta#classtensorflow_1_1ops_1_1_apply_adadelta_1a7ab3d73516eacd84efdba9d4c8bb31dd() const ` | `::tensorflow::Node *` |
| `https://www.tensorflow.org/versions/r2.12/api_docs/cc/class/tensorflow/ops/apply-adadelta#classtensorflow_1_1ops_1_1_apply_adadelta_1aa0992e4c234bd33403c057425829457c() const ` |   |
| `https://www.tensorflow.org/versions/r2.12/api_docs/cc/class/tensorflow/ops/apply-adadelta#classtensorflow_1_1ops_1_1_apply_adadelta_1a0d01185e91e72c289949de8ca852c923() const ` |   |

| ### Public static functions ||
|---|---|
| `https://www.tensorflow.org/versions/r2.12/api_docs/cc/class/tensorflow/ops/apply-adadelta#classtensorflow_1_1ops_1_1_apply_adadelta_1a8545cc26c688935679d0a732a1407986(bool x)` | `https://www.tensorflow.org/versions/r2.12/api_docs/cc/struct/tensorflow/ops/apply-adadelta/attrs#structtensorflow_1_1ops_1_1_apply_adadelta_1_1_attrs` |

| ### Structs ||
|---|---|
| [tensorflow::ops::ApplyAdadelta::Attrs](https://www.tensorflow.org/versions/r2.12/api_docs/cc/struct/tensorflow/ops/apply-adadelta/attrs) | Optional attribute setters for [ApplyAdadelta](https://www.tensorflow.org/versions/r2.12/api_docs/cc/class/tensorflow/ops/apply-adadelta#classtensorflow_1_1ops_1_1_apply_adadelta). |

## Public attributes

### operation

```
Operation operation
```

### out

```
::tensorflow::Output out
```

## Public functions

### ApplyAdadelta

```
 ApplyAdadelta(
  const ::tensorflow::Scope & scope,
  ::tensorflow::Input var,
  ::tensorflow::Input accum,
  ::tensorflow::Input accum_update,
  ::tensorflow::Input lr,
  ::tensorflow::Input rho,
  ::tensorflow::Input epsilon,
  ::tensorflow::Input grad
)
```

### ApplyAdadelta

```
 ApplyAdadelta(
  const ::tensorflow::Scope & scope,
  ::tensorflow::Input var,
  ::tensorflow::Input accum,
  ::tensorflow::Input accum_update,
  ::tensorflow::Input lr,
  ::tensorflow::Input rho,
  ::tensorflow::Input epsilon,
  ::tensorflow::Input grad,
  const ApplyAdadelta::Attrs & attrs
)
```

### node

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

### operator::tensorflow::Input

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

### operator::tensorflow::Output

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

## Public static functions

### UseLocking

```
Attrs UseLocking(
  bool x
)
```