Update relevant entries in 'var' and 'accum' according to the adagrad scheme.
tf.raw_ops.SparseApplyAdagradV2(
var, accum, lr, epsilon, grad, indices, use_locking=False, update_slots=True,
name=None
)
That is for rows we have grad for, we update var and accum as follows:
$$accum += grad * grad$$
$$var -= lr * grad * (1 / sqrt(accum))$$
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().
|
lr
|
A Tensor. Must have the same type as var.
Learning rate. Must be a scalar.
|
epsilon
|
A Tensor. Must have the same type as var.
Constant factor. Must be a scalar.
|
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.
|
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.
|
update_slots
|
An optional bool. Defaults to True.
|
name
|
A name for the operation (optional). |
Returns | |
|---|---|
A mutable Tensor. Has the same type as var.
|