# tensorflow::ops::ApplyPowerSign

`#include <training_ops.h>`

Update '\*var' according to the AddSign update.

## Summary

m_t \<- beta1 \* m_{t-1} + (1 - beta1) \* g update \<- exp(logbase \* sign_decay \* sign(g) \* sign(m_t)) \* g variable \<- variable - lr_t \* update

Arguments:

- scope: A [Scope](https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope) object
- var: Should be from a Variable().
- m: Should be from a Variable().
- lr: Scaling factor. Must be a scalar.
- logbase: Must be a scalar.
- sign_decay: Must be a scalar.
- beta: Must be a scalar.
- grad: The gradient.

<br />

Optional attributes (see `https://www.tensorflow.org/versions/r2.0/api_docs/cc/struct/tensorflow/ops/apply-power-sign/attrs#structtensorflow_1_1ops_1_1_apply_power_sign_1_1_attrs`):

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

<br />

Returns:

- `https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output`: Same as "var".

<br />

| ### Constructors and Destructors ||
|---|---|
| `https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/ops/apply-power-sign#classtensorflow_1_1ops_1_1_apply_power_sign_1a4083d7676778fbebe38c5aa3906ba573(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 var, ::https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input m, ::https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input lr, ::https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input logbase, ::https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input sign_decay, ::https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input beta, ::https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input grad)` ||
| `https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/ops/apply-power-sign#classtensorflow_1_1ops_1_1_apply_power_sign_1ac5cfe9375414e3da6ffa6c6b7dbb6c98(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 var, ::https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input m, ::https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input lr, ::https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input logbase, ::https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input sign_decay, ::https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input beta, ::https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input grad, const https://www.tensorflow.org/versions/r2.0/api_docs/cc/struct/tensorflow/ops/apply-power-sign/attrs#structtensorflow_1_1ops_1_1_apply_power_sign_1_1_attrs & attrs)` ||

| ### Public attributes ||
|---|---|
| `https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/ops/apply-power-sign#classtensorflow_1_1ops_1_1_apply_power_sign_1a5125592ade433f2862686ad54eb00a35` | `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/apply-power-sign#classtensorflow_1_1ops_1_1_apply_power_sign_1aa6f4cf4bacd1b8ac2217f5656510684a` | `::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/apply-power-sign#classtensorflow_1_1ops_1_1_apply_power_sign_1a9f0df057bae65b3e62d1af2fe740ca6e() const ` | `::tensorflow::Node *` |
| `https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/ops/apply-power-sign#classtensorflow_1_1ops_1_1_apply_power_sign_1ab8353f9957efd29b24c59cd7dbe1fdc0() const ` | ` `` ` |
| `https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/ops/apply-power-sign#classtensorflow_1_1ops_1_1_apply_power_sign_1a037ed37ac4be6ba570f480c133a10bcb() const ` | ` `` ` |

| ### Public static functions ||
|---|---|
| `https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/ops/apply-power-sign#classtensorflow_1_1ops_1_1_apply_power_sign_1a38f6aeb17f19ce776fc5c256f0d94082(bool x)` | `https://www.tensorflow.org/versions/r2.0/api_docs/cc/struct/tensorflow/ops/apply-power-sign/attrs#structtensorflow_1_1ops_1_1_apply_power_sign_1_1_attrs` |

| ### Structs ||
|---|---|
| [tensorflow::ops::ApplyPowerSign::Attrs](https://www.tensorflow.org/versions/r2.0/api_docs/cc/struct/tensorflow/ops/apply-power-sign/attrs) | Optional attribute setters for [ApplyPowerSign](https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/ops/apply-power-sign#classtensorflow_1_1ops_1_1_apply_power_sign). |

## Public attributes

### operation

```
Operation operation
```

### out

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

## Public functions

### ApplyPowerSign

```
 ApplyPowerSign(
  const ::tensorflow::Scope & scope,
  ::tensorflow::Input var,
  ::tensorflow::Input m,
  ::tensorflow::Input lr,
  ::tensorflow::Input logbase,
  ::tensorflow::Input sign_decay,
  ::tensorflow::Input beta,
  ::tensorflow::Input grad
)
```

### ApplyPowerSign

```
 ApplyPowerSign(
  const ::tensorflow::Scope & scope,
  ::tensorflow::Input var,
  ::tensorflow::Input m,
  ::tensorflow::Input lr,
  ::tensorflow::Input logbase,
  ::tensorflow::Input sign_decay,
  ::tensorflow::Input beta,
  ::tensorflow::Input grad,
  const ApplyPowerSign::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
)
```