# tf.raw_ops.ApplyFtrl

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Update '\*var' according to the Ftrl-proximal scheme.

#### View aliases


**Compat aliases for migration**

See
[Migration guide](https://www.tensorflow.org/guide/migrate) for
more details.

[`tf.compat.v1.raw_ops.ApplyFtrl`](https://www.tensorflow.org/api_docs/python/tf/raw_ops/ApplyFtrl)

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    tf.raw_ops.ApplyFtrl(
        var,
        accum,
        linear,
        grad,
        lr,
        l1,
        l2,
        lr_power,
        use_locking=False,
        multiply_linear_by_lr=False,
        name=None
    )

accum_new = accum + grad \* grad
linear += grad - (accum_new\^(-lr_power) - accum\^(-lr_power)) / lr \* var
quadratic = 1.0 / (accum_new\^(lr_power) \* lr) + 2 \* l2
var = (sign(linear) \* l1 - linear) / quadratic if \|linear\| \> l1 else 0.0
accum = accum_new

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| ## Args ||
|---|---|
| `var` | A mutable `Tensor`. Must be one of the following types: `float32`, `float64`, `int32`, `uint8`, `int16`, `int8`, `complex64`, `int64`, `qint8`, `quint8`, `qint32`, `bfloat16`, `qint16`, `quint16`, `uint16`, `complex128`, `half`, `uint32`, `uint64`. Should be from a Variable(). |
| `accum` | A mutable `Tensor`. Must have the same type as `var`. Should be from a Variable(). |
| `linear` | A mutable `Tensor`. Must have the same type as `var`. Should be from a Variable(). |
| `grad` | A `Tensor`. Must have the same type as `var`. The gradient. |
| `lr` | A `Tensor`. Must have the same type as `var`. Scaling factor. Must be a scalar. |
| `l1` | A `Tensor`. Must have the same type as `var`. L1 regularization. Must be a scalar. |
| `l2` | A `Tensor`. Must have the same type as `var`. L2 regularization. Must be a scalar. |
| `lr_power` | A `Tensor`. Must have the same type as `var`. Scaling factor. Must be a scalar. |
| `use_locking` | An optional `bool`. Defaults to `False`. If `True`, updating of the var and accum tensors will be protected by a lock; otherwise the behavior is undefined, but may exhibit less contention. |
| `multiply_linear_by_lr` | An optional `bool`. Defaults to `False`. |
| `name` | A name for the operation (optional). |

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| ## Returns ||
|---|---|
| A mutable `Tensor`. Has the same type as `var`. ||

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