tensorflow::ops::SparseApplyFtrlV2

#include <training_ops.h>

Update relevant entries in '*var' according to the Ftrl-proximal scheme.

Summary

That is for rows we have grad for, we update var, accum and linear as follows: grad_with_shrinkage = grad + 2 * l2_shrinkage * var accum_new = accum + grad * grad 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.
• indices: A vector of indices into the first dimension of var and accum.
• 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:

• Output: Same as "var".

Constructors and Destructors
SparseApplyFtrlV2(const ::tensorflow::Scope & scope, ::tensorflow::Input var, ::tensorflow::Input accum, ::tensorflow::Input linear, ::tensorflow::Input grad, ::tensorflow::Input indices, ::tensorflow::Input lr, ::tensorflow::Input l1, ::tensorflow::Input l2, ::tensorflow::Input l2_shrinkage, ::tensorflow::Input lr_power)
SparseApplyFtrlV2(const ::tensorflow::Scope & scope, ::tensorflow::Input var, ::tensorflow::Input accum, ::tensorflow::Input linear, ::tensorflow::Input grad, ::tensorflow::Input indices, ::tensorflow::Input lr, ::tensorflow::Input l1, ::tensorflow::Input l2, ::tensorflow::Input l2_shrinkage, ::tensorflow::Input lr_power, const SparseApplyFtrlV2::Attrs & attrs)

Public attributes
operation	Operation
out	::tensorflow::Output

Public functions
node() const	::tensorflow::Node *
operator::tensorflow::Input() const
operator::tensorflow::Output() const

Public static functions
MultiplyLinearByLr(bool x)	Attrs
UseLocking(bool x)	Attrs

Structs
tensorflow::ops::SparseApplyFtrlV2::Attrs	Optional attribute setters for SparseApplyFtrlV2.

Public attributes

operation

Operation operation

out

::tensorflow::Output out

Public functions

SparseApplyFtrlV2

 SparseApplyFtrlV2(
  const ::tensorflow::Scope & scope,
  ::tensorflow::Input var,
  ::tensorflow::Input accum,
  ::tensorflow::Input linear,
  ::tensorflow::Input grad,
  ::tensorflow::Input indices,
  ::tensorflow::Input lr,
  ::tensorflow::Input l1,
  ::tensorflow::Input l2,
  ::tensorflow::Input l2_shrinkage,
  ::tensorflow::Input lr_power
)

SparseApplyFtrlV2

 SparseApplyFtrlV2(
  const ::tensorflow::Scope & scope,
  ::tensorflow::Input var,
  ::tensorflow::Input accum,
  ::tensorflow::Input linear,
  ::tensorflow::Input grad,
  ::tensorflow::Input indices,
  ::tensorflow::Input lr,
  ::tensorflow::Input l1,
  ::tensorflow::Input l2,
  ::tensorflow::Input l2_shrinkage,
  ::tensorflow::Input lr_power,
  const SparseApplyFtrlV2::Attrs & attrs
)

node

::tensorflow::Node * node() const 

operator::tensorflow::Input

 operator::tensorflow::Input() const 

operator::tensorflow::Output

 operator::tensorflow::Output() const 

Public static functions

MultiplyLinearByLr

Attrs MultiplyLinearByLr(
  bool x
)

UseLocking

Attrs UseLocking(
  bool x
)