ScatterUpdate

public final class ScatterUpdate

Applies sparse updates to a variable reference.

This operation computes 

# Scalar indices
     ref[indices, ...] = updates[...]
 
     # Vector indices (for each i)
     ref[indices[i], ...] = updates[i, ...]
 
     # High rank indices (for each i, ..., j)
     ref[indices[i, ..., j], ...] = updates[i, ..., j, ...]
This operation outputs `ref` after the update is done. This makes it easier to chain operations that need to use the reset value.

If values in `ref` is to be updated more than once, because there are duplicate entries in `indices`, the order at which the updates happen for each value is undefined.

Requires `updates.shape = indices.shape + ref.shape[1:]` or `updates.shape = []`.

See also `tf.batch_scatter_update` and `tf.scatter_nd_update`.

Nested Classes

class ScatterUpdate.Options Optional attributes for ScatterUpdate

Public Methods

Output <T>
asOutput ()
Returns the symbolic handle of a tensor.
static <T, U extends Number> ScatterUpdate <T>
create ( Scope scope, Operand <T> ref, Operand <U> indices, Operand <T> updates, Options... options)
Factory method to create a class wrapping a new ScatterUpdate operation.
Output <T>
outputRef ()
= Same as `ref`.
static ScatterUpdate.Options
useLocking (Boolean useLocking)

Inherited Methods

Public Methods

public Output <T> asOutput ()

Returns the symbolic handle of a tensor.

Inputs to TensorFlow operations are outputs of another TensorFlow operation. This method is used to obtain a symbolic handle that represents the computation of the input.

public static ScatterUpdate <T> create ( Scope scope, Operand <T> ref, Operand <U> indices, Operand <T> updates, Options... options)

Factory method to create a class wrapping a new ScatterUpdate operation.

Parameters
scope current scope
ref Should be from a `Variable` node.
indices A tensor of indices into the first dimension of `ref`.
updates A tensor of updated values to store in `ref`.
options carries optional attributes values
Returns
  • a new instance of ScatterUpdate

public Output <T> outputRef ()

= Same as `ref`. Returned as a convenience for operations that want to use the updated values after the update is done.

public static ScatterUpdate.Options useLocking (Boolean useLocking)

Parameters
useLocking If True, the assignment will be protected by a lock; otherwise the behavior is undefined, but may exhibit less contention.