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Subtracts sparse updates to a variable reference.
tf.compat.v1.scatter_sub(
ref, indices, updates, use_locking=False, name=None
)
# 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 = [].
Args | |
|---|---|
ref
|
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 node.
|
indices
|
A Tensor. Must be one of the following types: int32, int64.
A tensor of indices into the first dimension of ref.
|
updates
|
A Tensor. Must have the same type as ref.
A tensor of updated values to subtract from ref.
|
use_locking
|
An optional bool. Defaults to False.
If True, the subtraction will be protected by a lock;
otherwise the behavior is undefined, but may exhibit less contention.
|
name
|
A name for the operation (optional). |
Returns | |
|---|---|
A mutable Tensor. Has the same type as ref.
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