ScatterSub

public final class ScatterSub

Subtracts sparse updates to a variable reference. 

# 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.

Duplicate entries are handled correctly: if multiple `indices` reference the same location, their (negated) contributions add.

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

Nested Classes

class ScatterSub.Options Optional attributes for ScatterSub

Public Methods

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

Factory method to create a class wrapping a new ScatterSub 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 subtract from `ref`.
options carries optional attributes values
Returns
  • a new instance of ScatterSub

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 ScatterSub.Options useLocking (Boolean useLocking)

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