def scatter_nd_sub(ref, indices, updates, use_locking=False, name=None):
r"""Applies sparse subtraction to individual values or slices in a Variable.
`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 `K`th
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 subtract 4 scattered elements from a rank-1 tensor
with 8 elements. In Python, that update would look like this:
```python
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])
op = tf.scatter_nd_sub(ref, indices, updates)
with tf.Session() as sess:
print sess.run(op)
```
The resulting update to ref would look like this:
[1, -9, 3, -6, -6, 6, 7, -4]
See `tf.scatter_nd` for more details about how to make updates to
slices.
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`. 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.
use_locking: An optional `bool`. Defaults to `False`.
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.
name: A name for the operation (optional).
Returns:
A mutable `Tensor`. Has the same type as `ref`.
"""
if ref.dtype._is_ref_dtype:
return gen_state_ops.scatter_nd_sub(ref, indices, updates, use_locking,
name)
return ref._lazy_read(
gen_state_ops.resource_scatter_nd_sub( # pylint: disable=protected-access
ref.handle,
indices,
ops.convert_to_tensor(updates, ref.dtype),
name=name))
def scatter_nd_sub(ref, indices, updates, use_locking=False, name=None):
r"""Applies sparse subtraction to individual values or slices in a Variable.
`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 `K`th
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 subtract 4 scattered elements from a rank-1 tensor
with 8 elements. In Python, that update would look like this:
```python
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])
op = tf.scatter_nd_sub(ref, indices, updates)
with tf.Session() as sess:
print sess.run(op)
```
The resulting update to ref would look like this:
[1, -9, 3, -6, -6, 6, 7, -4]
See `tf.scatter_nd` for more details about how to make updates to
slices.
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`. 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.
use_locking: An optional `bool`. Defaults to `False`.
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.
name: A name for the operation (optional).
Returns:
A mutable `Tensor`. Has the same type as `ref`.
"""
if ref.dtype._is_ref_dtype:
return gen_state_ops.scatter_nd_sub(
ref, indices, updates, use_locking, name)
return ref._lazy_read(gen_state_ops.resource_scatter_nd_sub( # pylint: disable=protected-access
ref.handle, indices, ops.convert_to_tensor(updates, ref.dtype),
name=name))