tensorflow::
#include <training_ops.h>
Update '*var' according to the Ftrl-proximal scheme.
Summary
accum_new = accum + grad * grad grad_with_shrinkage = grad + 2 * l2_shrinkage * var linear += grad_with_shrinkage + (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
Args:
- scope: A Scope object
- var: Should be from a Variable().
- accum: Should be from a Variable().
- linear: Should be from a Variable().
- grad: The gradient.
- lr: Scaling factor. Must be a scalar.
- l1: L1 regularization. Must be a scalar.
- l2: L2 shrinkage regularization. Must be a scalar.
- lr_power: Scaling factor. Must be a scalar.
Optional attributes (see
Attrs
):
-
use_locking: 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.
Returns:
-
the created
Operation
Constructors and Destructors |
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ResourceApplyFtrlV2
(const ::
tensorflow::Scope
& scope, ::
tensorflow::Input
var, ::
tensorflow::Input
accum, ::
tensorflow::Input
linear, ::
tensorflow::Input
grad, ::
tensorflow::Input
lr, ::
tensorflow::Input
l1, ::
tensorflow::Input
l2, ::
tensorflow::Input
l2_shrinkage, ::
tensorflow::Input
lr_power)
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ResourceApplyFtrlV2
(const ::
tensorflow::Scope
& scope, ::
tensorflow::Input
var, ::
tensorflow::Input
accum, ::
tensorflow::Input
linear, ::
tensorflow::Input
grad, ::
tensorflow::Input
lr, ::
tensorflow::Input
l1, ::
tensorflow::Input
l2, ::
tensorflow::Input
l2_shrinkage, ::
tensorflow::Input
lr_power, const
ResourceApplyFtrlV2::Attrs
& attrs)
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Public attributes |
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operation
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Public functions |
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operator::tensorflow::Operation
() const
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Public static functions |
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MultiplyLinearByLr
(bool x)
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UseLocking
(bool x)
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Structs |
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tensorflow::
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Optional attribute setters for ResourceApplyFtrlV2 . |
Public attributes
Public functions
ResourceApplyFtrlV2
ResourceApplyFtrlV2( const ::tensorflow::Scope & scope, ::tensorflow::Input var, ::tensorflow::Input accum, ::tensorflow::Input linear, ::tensorflow::Input grad, ::tensorflow::Input lr, ::tensorflow::Input l1, ::tensorflow::Input l2, ::tensorflow::Input l2_shrinkage, ::tensorflow::Input lr_power )
ResourceApplyFtrlV2
ResourceApplyFtrlV2( const ::tensorflow::Scope & scope, ::tensorflow::Input var, ::tensorflow::Input accum, ::tensorflow::Input linear, ::tensorflow::Input grad, ::tensorflow::Input lr, ::tensorflow::Input l1, ::tensorflow::Input l2, ::tensorflow::Input l2_shrinkage, ::tensorflow::Input lr_power, const ResourceApplyFtrlV2::Attrs & attrs )
operator::tensorflow::Operation
operator::tensorflow::Operation() const