tensorflow::ops::ScatterNdUpdate

#include <state_ops.h>

Applies sparse updates to individual values or slices within a given.

Summary

variable according to indices.

ref is a Tensor with rank P and indices is a Tensor of rank Q.

indices must be integer tensor, containing indices into ref. It must be shape \([d_0, ..., d_{Q-2}, K]\) where 0 < K <= P.

The innermost dimension of indices (with length K) corresponds to indices into elements (if K = P) or slices (if K < P) along the Kth dimension of ref.

updates is Tensor of rank Q-1+P-K with shape:

$$[d_0, ..., d_{Q-2}, ref.shape[K], ..., ref.shape[P-1]].$$

For example, say we want to update 4 scattered elements to a rank-1 tensor to 8 elements. In Python, that update would look like this:

    ref = tf.Variable([1, 2, 3, 4, 5, 6, 7, 8])
    indices = tf.constant([[4], [3], [1] ,[7]])
    updates = tf.constant([9, 10, 11, 12])
    update = tf.scatter_nd_update(ref, indices, updates)
    with tf.Session() as sess:
      print sess.run(update)

The resulting update to ref would look like this: 

[1, 11, 3, 10, 9, 6, 7, 12]

See tf.scatter_nd for more details about how to make updates to slices.

See also tf.scatter_update and tf.batch_scatter_update.

Args:

  • scope: A Scope object
  • ref: A mutable Tensor. Should be from a Variable node.
  • indices: A Tensor. Must be one of the following types: int32, int64. A tensor of indices into ref.
  • updates: A Tensor. Must have the same type as ref. A tensor of updated values to add to ref.

Optional attributes (see Attrs):

  • use_locking: An optional bool. Defaults to True. If True, the assignment will be protected by a lock; otherwise the behavior is undefined, but may exhibit less contention.

Returns:

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

Constructors and Destructors
ScatterNdUpdate(const ::tensorflow::Scope & scope, ::tensorflow::Input ref, ::tensorflow::Input indices, ::tensorflow::Input updates)
ScatterNdUpdate(const ::tensorflow::Scope & scope, ::tensorflow::Input ref, ::tensorflow::Input indices, ::tensorflow::Input updates, const ScatterNdUpdate::Attrs & attrs)

Public attributes
operation
output_ref

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

Public static functions
UseLocking(bool x)

Structs
tensorflow::ops::ScatterNdUpdate::Attrs

Optional attribute setters for ScatterNdUpdate.

Public attributes

operation

Operation operation

output_ref

::tensorflow::Output output_ref

Public functions

ScatterNdUpdate

 ScatterNdUpdate(
  const ::tensorflow::Scope & scope,
  ::tensorflow::Input ref,
  ::tensorflow::Input indices,
  ::tensorflow::Input updates
)

ScatterNdUpdate

 ScatterNdUpdate(
  const ::tensorflow::Scope & scope,
  ::tensorflow::Input ref,
  ::tensorflow::Input indices,
  ::tensorflow::Input updates,
  const ScatterNdUpdate::Attrs & attrs
)

node

::tensorflow::Node * node() const

operator::tensorflow::Input

 operator::tensorflow::Input() const

operator::tensorflow::Output

 operator::tensorflow::Output() const

Public static functions

UseLocking

Attrs UseLocking(
  bool x
)