tf.raw_ops.SparseApplyFtrlV2

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

View aliases

Compat aliases for migration

See Migration guide for more details.

tf.compat.v1.raw_ops.SparseApplyFtrlV2

tf.raw_ops.SparseApplyFtrlV2(
    var, accum, linear, grad, indices, lr, l1, l2, l2_shrinkage, lr_power,
    use_locking=False, multiply_linear_by_lr=False, name=None
)

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
var	A mutable Tensor. Must be one of the following types: float32, float64, int32, uint8, int16, int8, complex64, int64, qint8, quint8, qint32, bfloat16, 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.
indices	A Tensor. Must be one of the following types: int32, int64. A vector of indices into the first dimension of var and accum.
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 shrinkage regularization. Must be a scalar.
l2_shrinkage	A Tensor. Must have the same type as var.
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).

Returns
A mutable Tensor. Has the same type as var.