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# Copyright 2015 The TensorFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ==============================================================================
"""Sparse tensors."""
# pylint: disable=g-bad-name
import
collections
import
numpy
as
np
from
tensorflow
.
core
.
protobuf
import
struct_pb2
from
tensorflow
.
python
import
pywrap_tensorflow
# pylint: disable=unused-import
from
tensorflow
.
python
import
tf2
from
tensorflow
.
python
.
framework
import
composite_tensor
from
tensorflow
.
python
.
framework
import
constant_op
from
tensorflow
.
python
.
framework
import
dtypes
from
tensorflow
.
python
.
framework
import
ops
from
tensorflow
.
python
.
framework
import
override_binary_operator
from
tensorflow
.
python
.
framework
import
tensor
from
tensorflow
.
python
.
framework
import
tensor_shape
from
tensorflow
.
python
.
framework
import
tensor_spec
from
tensorflow
.
python
.
framework
import
tensor_util
from
tensorflow
.
python
.
framework
import
type_spec
from
tensorflow
.
python
.
framework
import
type_spec_registry
from
tensorflow
.
python
.
ops
import
array_ops_stack
from
tensorflow
.
python
.
ops
import
gen_math_ops
from
tensorflow
.
python
.
ops
import
gen_sparse_ops
from
tensorflow
.
python
.
saved_model
import
nested_structure_coder
from
tensorflow
.
python
.
types
import
internal
from
tensorflow
.
python
.
util
.
tf_export
import
tf_export
# pylint: disable=protected-access
_eval_using_default_session
=
tensor
.
_eval_using_default_session
_override_helper
=
tensor
.
_override_helper
# pylint: enable=protected-access
@
tf_export
(
"sparse.SparseTensor"
,
"SparseTensor"
)
class
SparseTensor
(
internal
.
NativeObject
,
composite_tensor
.
CompositeTensor
):
"""Represents a sparse tensor.
TensorFlow represents a sparse tensor as three separate dense tensors:
`indices`, `values`, and `dense_shape`. In Python, the three tensors are
collected into a `SparseTensor` class for ease of use. If you have separate
`indices`, `values`, and `dense_shape` tensors, wrap them in a `SparseTensor`
object before passing to the ops below.
Concretely, the sparse tensor `SparseTensor(indices, values, dense_shape)`
comprises the following components, where `N` and `ndims` are the number
of values and number of dimensions in the `SparseTensor`, respectively:
* `indices`: A 2-D int64 tensor of shape `[N, ndims]`, which specifies the
indices of the elements in the sparse tensor that contain nonzero values
(elements are zero-indexed). For example, `indices=[[1,3], [2,4]]` specifies
that the elements with indexes of [1,3] and [2,4] have nonzero values.
* `values`: A 1-D tensor of any type and shape `[N]`, which supplies the
values for each element in `indices`. For example, given `indices=[[1,3],
[2,4]]`, the parameter `values=[18, 3.6]` specifies that element [1,3] of
the sparse tensor has a value of 18, and element [2,4] of the tensor has a
value of 3.6.
* `dense_shape`: A 1-D int64 tensor of shape `[ndims]`, which specifies the
dense_shape of the sparse tensor. Takes a list indicating the number of
elements in each dimension. For example, `dense_shape=[3,6]` specifies a
two-dimensional 3x6 tensor, `dense_shape=[2,3,4]` specifies a
three-dimensional 2x3x4 tensor, and `dense_shape=[9]` specifies a
one-dimensional tensor with 9 elements.
The corresponding dense tensor satisfies:
```python
dense.shape = dense_shape
dense[tuple(indices[i])] = values[i]
```
By convention, `indices` should be sorted in row-major order (or equivalently
lexicographic order on the tuples `indices[i]`). This is not enforced when
`SparseTensor` objects are constructed, but most ops assume correct ordering.
If the ordering of sparse tensor `st` is wrong, a fixed version can be
obtained by calling `tf.sparse.reorder(st)`.
Example: The sparse tensor
```python
SparseTensor(indices=[[0, 0], [1, 2]], values=[1, 2], dense_shape=[3, 4])
```
represents the dense tensor
```python
[[1, 0, 0, 0]
[0, 0, 2, 0]
[0, 0, 0, 0]]
```
"""
@
classmethod
def
from_value
(
cls
,
sparse_tensor_value
):
if
not
is_sparse
(
sparse_tensor_value
):
raise
TypeError
(
f"Argument sparse_tensor_value=
{
sparse_tensor_value
}
"
"is neither a SparseTensor nor SparseTensorValue."
)
return
SparseTensor
(
indices
=
sparse_tensor_value
.
indices
,
values
=
sparse_tensor_value
.
values
,
dense_shape
=
sparse_tensor_value
.
dense_shape
)
def
__init__
(
self
,
indices
,
values
,
dense_shape
):
"""Creates a `SparseTensor`.
Args:
indices: A 2-D int64 tensor of shape `[N, ndims]`.
values: A 1-D tensor of any type and shape `[N]`.
dense_shape: A 1-D int64 tensor of shape `[ndims]`.
Raises:
ValueError: When building an eager SparseTensor if `dense_shape` is
unknown or contains unknown elements (None or -1).
"""
with
ops
.
name_scope
(
None
,
"SparseTensor"
, [
indices
,
values
,
dense_shape
]):
indices
=
ops
.
convert_to_tensor
(
indices
,
name
=
"indices"
,
dtype
=
dtypes
.
int64
)
# TODO(touts): Consider adding mutable_values() when 'values'
# is a VariableOp and updating users of SparseTensor.
values
=
ops
.
convert_to_tensor
(
values
,
name
=
"values"
)
dense_shape
=
ops
.
convert_to_tensor
(
dense_shape
,
name
=
"dense_shape"
,
dtype
=
dtypes
.
int64
)
dense_shape_default
=
tensor_util
.
constant_value_as_shape
(
dense_shape
)
self
.
_indices
=
indices
self
.
_values
=
values
self
.
_dense_shape
=
dense_shape
self
.
_dense_shape_default
=
dense_shape_default
indices_shape
=
indices
.
shape
.
with_rank
(
2
)
values_shape
=
values
.
shape
.
with_rank
(
1
)
dense_shape_shape
=
dense_shape
.
shape
.
with_rank
(
1
)
# Assert number of rows in indices match the number of elements in values.
indices_shape
.
dims
[
0
].
assert_is_compatible_with
(
values_shape
.
dims
[
0
])
# Assert number of columns in indices matches the number of elements in
# dense_shape.
indices_shape
.
dims
[
1
].
assert_is_compatible_with
(
dense_shape_shape
.
dims
[
0
])
def
get_shape
(
self
)
->
tensor_shape
.
TensorShape
:
"""Get the `TensorShape` representing the shape of the dense tensor.
Returns:
A `TensorShape` object.
"""
return
self
.
_dense_shape_default
@
property
def
indices
(
self
):
"""The indices of non-zero values in the represented dense tensor.
Returns:
A 2-D Tensor of int64 with dense_shape `[N, ndims]`, where `N` is the
number of non-zero values in the tensor, and `ndims` is the rank.
"""
return
self
.
_indices
@
property
def
values
(
self
):
"""The non-zero values in the represented dense tensor.
Returns:
A 1-D Tensor of any data type.
"""
return
self
.
_values
def
with_values
(
self
,
new_values
):
"""Returns a copy of `self` with `values` replaced by `new_values`.
This method produces a new `SparseTensor` that has the same nonzero
`indices` and same `dense_shape`, but updated values.
Args:
new_values: The values of the new `SparseTensor`. Needs to have the same
shape as the current `.values` `Tensor`. May have a different type than
the current `values`.
Returns:
A `SparseTensor` with identical indices and shape but updated values.
Example usage:
>>> st = tf.sparse.from_dense([[1, 0, 2, 0], [3, 0, 0, 4]])
>>> tf.sparse.to_dense(st.with_values([10, 20, 30, 40])) # 4 nonzero values
<tf.Tensor: shape=(2, 4), dtype=int32, numpy=
array([[10, 0, 20, 0],
[30, 0, 0, 40]], dtype=int32)>
"""
return
SparseTensor
(
self
.
_indices
,
new_values
,
self
.
_dense_shape
)
@
property
def
op
(
self
)
->
ops
.
Operation
:
"""The `Operation` that produces `values` as an output."""
return
self
.
_values
.
op
@
property
def
dtype
(
self
):
"""The `DType` of elements in this tensor."""
return
self
.
_values
.
dtype
@
property
def
dense_shape
(
self
):
"""A 1-D Tensor of int64 representing the shape of the dense tensor."""
return
self
.
_dense_shape
@
property
def
shape
(
self
):
"""Get the `TensorShape` representing the shape of the dense tensor.
Returns:
A `TensorShape` object.
"""
return
self
.
_dense_shape_default
def
set_shape
(
self
,
shape
):
"""Updates the `TensorShape` representing the shape of the dense tensor.
With eager execution this operates as a shape assertion.
Here the shapes match:
>>> st = tf.SparseTensor(
... indices=[[0, 0], [1, 2]], values=[1, 2], dense_shape=[3, 4])
>>> st.set_shape([3, 4])
Passing a `None` in the new shape allows any value for that axis:
>>> st.set_shape([3, None])
An error is raised if an incompatible shape is passed.
>>> st.set_shape([1, 4])
Traceback (most recent call last):
...
ValueError: Tensor's shape (3, 4) is not compatible with supplied
shape [1, 4]
When executing in a `tf.function`, or building a model using
`tf.keras.Input`, `SparseTensor.set_shape` will *merge* the given `shape`
with the current shape of this tensor, and set the tensor's shape to the
merged value (see `tf.TensorShape.merge_with` for details):
>>> st = tf.keras.Input(shape=[None, None, 3], sparse=True)
>>> print(st.shape)
(None, None, None, 3)
Dimensions set to `None` are not updated:
>>> st.set_shape([None, 224, 224, None])
>>> print(st.shape)
(None, 224, 224, 3)
The main use case for this is to provide additional shape information
that cannot be inferred from the graph alone.
Caution: `set_shape` ensures that the applied shape is compatible with
the existing shape, but it does not check at runtime. Setting
incorrect shapes can result in inconsistencies between the
statically-known graph and the runtime value of tensors.
Args:
shape: A `TensorShape` representing the shape of this tensor, a
`TensorShapeProto`, a list, a tuple, or None.
Raises:
ValueError: If `shape` is not compatible with the current shape of
this tensor.
"""
if
not
isinstance
(
shape
,
tensor_shape
.
TensorShape
):
shape
=
tensor_shape
.
TensorShape
(
shape
)
self
.
_dense_shape_default
=
self
.
_dense_shape_default
.
merge_with
(
shape
)
@
property
def
graph
(
self
):
"""The `Graph` that contains the index, value, and dense_shape tensors."""
return
self
.
_indices
.
graph
def
__repr__
(
self
):
return
"SparseTensor(indices=%s, values=%s, dense_shape=%s)"
%
(
self
.
_indices
,
self
.
_values
,
self
.
_dense_shape
)
def
eval
(
self
,
feed_dict
=
None
,
session
=
None
):
"""Evaluates this sparse tensor in a `Session`.
Calling this method will execute all preceding operations that
produce the inputs needed for the operation that produces this
tensor.
*N.B.* Before invoking `SparseTensor.eval()`, its graph must have been
launched in a session, and either a default session must be
available, or `session` must be specified explicitly.
Args:
feed_dict: A dictionary that maps `Tensor` objects to feed values. See
`tf.Session.run` for a description of the valid feed values.
session: (Optional.) The `Session` to be used to evaluate this sparse
tensor. If none, the default session will be used.
Returns:
A `SparseTensorValue` object.
"""
indices
,
values
,
dense_shape
=
_eval_using_default_session
(
[
self
.
indices
,
self
.
values
,
self
.
dense_shape
],
feed_dict
,
self
.
graph
,
session
)
return
SparseTensorValue
(
indices
,
values
,
dense_shape
)
@
staticmethod
def
_override_operator
(
operator
,
func
):
_override_helper
(
SparseTensor
,
operator
,
func
)
@
property
def
_type_spec
(
self
):
return
SparseTensorSpec
(
self
.
shape
,
self
.
dtype
)
def
_shape_invariant_to_type_spec
(
self
,
shape
):
# From the tf.while_loop docs: "If a loop variable is a SparseTensor, the
# shape invariant must be TensorShape([r]) where r is the rank of the dense
# tensor represented by the sparse tensor. It means the shapes of the three
# tensors of the SparseTensor are ([None], [None, r], [r]). NOTE: The shape
# invariant here is the shape of the SparseTensor.dense_shape property. It
# must be the shape of a vector.
if
shape
.
ndims
is
not
None
and
shape
.
ndims
!=
1
:
raise
ValueError
(
f"Expected a shape with 1 dimension. Obtained:
{
shape
}
"
f"which has
{
shape
.
ndims
}
dimensions."
)
rank
=
tensor_shape
.
dimension_value
(
shape
[
0
])
return
SparseTensorSpec
(
tensor_shape
.
unknown_shape
(
rank
),
self
.
dtype
)
def
consumers
(
self
):
return
self
.
_consumers
()
def
_numpy
(
self
):
"""Returns a numpy `array` with the values for this `SparseTensor`.
Requires that this `SparseTensor` was constructed in eager execution mode.
"""
if
not
self
.
_is_eager
():
raise
ValueError
(
"SparseTensor.numpy() is only supported in eager mode."
)
arr
=
np
.
zeros
(
self
.
dense_shape
,
dtype
=
self
.
dtype
.
as_numpy_dtype
())
for
i
,
v
in
zip
(
self
.
indices
,
self
.
values
):
arr
[
tuple
(
i
)]
=
v
return
arr
def
_is_eager
(
self
):
"""Returns True if this `SparseTensor` was constructed in eager execution.
Requires that each individual component of `SparseTensor`
(`indices`, `values` and `dense_shape`) is an instance of `EagerTensor`.
"""
return
all
(
isinstance
(
t
,
ops
.
EagerTensor
)
for
t
in
(
self
.
indices
,
self
.
values
,
self
.
dense_shape
))
SparseTensorValue
=
collections
.
namedtuple
(
"SparseTensorValue"
,
[
"indices"
,
"values"
,
"dense_shape"
])
tf_export
(
v1
=
[
"SparseTensorValue"
])(
SparseTensorValue
)
@
tf_export
(
"SparseTensorSpec"
)
@
type_spec_registry
.
register
(
"tf.SparseTensorSpec"
)
class
SparseTensorSpec
(
type_spec
.
BatchableTypeSpec
):
"""Type specification for a `tf.sparse.SparseTensor`."""
__slots__
=
[
"_shape"
,
"_dtype"
]
value_type
=
property
(
lambda
self
:
SparseTensor
)
def
__init__
(
self
,
shape
=
None
,
dtype
=
dtypes
.
float32
):
"""Constructs a type specification for a `tf.sparse.SparseTensor`.
Args:
shape: The dense shape of the `SparseTensor`, or `None` to allow any dense
shape.
dtype: `tf.DType` of values in the `SparseTensor`.
"""
self
.
_shape
=
tensor_shape
.
as_shape
(
shape
)
self
.
_dtype
=
dtypes
.
as_dtype
(
dtype
)
def
_serialize
(
self
):
return
(
self
.
_shape
,
self
.
_dtype
)
@
property
def
dtype
(
self
):
"""The `tf.dtypes.DType` specified by this type for the SparseTensor."""
return
self
.
_dtype
@
property
def
shape
(
self
):
"""The `tf.TensorShape` specified by this type for the SparseTensor."""
return
self
.
_shape
@
property
def
_component_specs
(
self
):
rank
=
self
.
_shape
.
ndims
num_values
=
None
return
[
tensor_spec
.
TensorSpec
([
num_values
,
rank
],
dtypes
.
int64
),
tensor_spec
.
TensorSpec
([
num_values
],
self
.
_dtype
),
tensor_spec
.
TensorSpec
([
rank
],
dtypes
.
int64
)]
def
_to_components
(
self
,
value
):
if
isinstance
(
value
,
SparseTensorValue
):
value
=
SparseTensor
.
from_value
(
value
)
return
[
value
.
indices
,
value
.
values
,
value
.
dense_shape
]
def
_from_components
(
self
,
tensor_list
):
if
(
all
(
isinstance
(
t
,
np
.
ndarray
)
for
t
in
tensor_list
)
and
not
tf2
.
enabled
()):
return
SparseTensorValue
(
*
tensor_list
)
else
:
result
=
SparseTensor
(
*
tensor_list
)
# Augment the static dense shape with the shape carried by the spec.
result
.
_dense_shape_default
=
result
.
_dense_shape_default
.
merge_with
(
# pylint: disable=protected-access
self
.
_shape
)
return
result
# The SparseTensorSpec tensor_list encoding uses (de)serialize_sparse ops
# to (un)box the component tensors in a way that allows for batching &
# unbatching.
@
property
def
_flat_tensor_specs
(
self
):
# NOTE(mrry): The default flat shape of a boxed `SparseTensor` is `(3,)`,
# but a `SparseTensorSpec` can also represent a batch of boxed
# `SparseTensor` objects with shape `(..., 3)` (and batches of batches,
# etc.), so the flat shape must be unknown.
return
[
tensor_spec
.
TensorSpec
(
None
,
dtypes
.
variant
)]
def
_to_tensor_list
(
self
,
value
):
value
=
SparseTensor
.
from_value
(
value
)
return
[
gen_sparse_ops
.
serialize_sparse
(
value
.
indices
,
value
.
values
,
value
.
dense_shape
,
out_type
=
dtypes
.
variant
)]
def
_to_batched_tensor_list
(
self
,
value
):
dense_shape
=
tensor_util
.
constant_value_as_shape
(
value
.
dense_shape
)
if
self
.
_shape
.
merge_with
(
dense_shape
).
ndims
==
0
:
raise
ValueError
(
"Unbatching a sparse tensor is only supported for rank >= 1. "
f"Obtained input:
{
value
}
."
)
return
[
gen_sparse_ops
.
serialize_many_sparse
(
value
.
indices
,
value
.
values
,
value
.
dense_shape
,
out_type
=
dtypes
.
variant
)]
def
_from_compatible_tensor_list
(
self
,
tensor_list
):
tensor_list
=
gen_sparse_ops
.
deserialize_sparse
(
tensor_list
[
0
],
self
.
_dtype
)
indices
,
values
,
dense_shape
=
tensor_list
rank
=
self
.
_shape
.
ndims
indices
.
set_shape
([
None
,
rank
])
# We restore the dense_shape from the SparseTypeSpec. This is necessary
# for shape inference when using placeholder SparseTensors in function
# tracing.
if
self
.
_shape
.
is_fully_defined
():
dense_shape
=
ops
.
convert_to_tensor
(
self
.
_shape
,
dtype
=
dtypes
.
int64
,
name
=
"shape"
)
elif
(
self
.
_shape
.
rank
is
not
None
and
any
(
dim
.
value
is
not
None
for
dim
in
self
.
_shape
.
dims
)):
pieces
=
array_ops_stack
.
unstack
(
dense_shape
,
num
=
self
.
_shape
.
rank
)
for
i
,
dim
in
enumerate
(
self
.
_shape
.
dims
):
if
dim
.
value
is
not
None
:
pieces
[
i
]
=
constant_op
.
constant
(
dim
.
value
,
dense_shape
.
dtype
)
dense_shape
=
array_ops_stack
.
stack
(
pieces
)
else
:
dense_shape
.
set_shape
([
rank
])
return
SparseTensor
(
indices
,
values
,
dense_shape
)
def
_batch
(
self
,
batch_size
):
return
SparseTensorSpec
(
tensor_shape
.
TensorShape
([
batch_size
]).
concatenate
(
self
.
_shape
),
self
.
_dtype
)
def
_unbatch
(
self
):
if
self
.
_shape
.
ndims
==
0
:
raise
ValueError
(
"Unbatching a tensor is only supported for rank >= 1"
)
return
SparseTensorSpec
(
self
.
_shape
[
1
:],
self
.
_dtype
)
def
_to_legacy_output_types
(
self
):
return
self
.
_dtype
def
_to_legacy_output_shapes
(
self
):
return
self
.
_shape
def
_to_legacy_output_classes
(
self
):
return
SparseTensor
@
classmethod
def
from_value
(
cls
,
value
):
if
isinstance
(
value
,
SparseTensor
):
return
cls
(
value
.
shape
,
value
.
dtype
)
if
isinstance
(
value
,
SparseTensorValue
):
if
isinstance
(
value
.
values
,
np
.
ndarray
):
return
cls
(
value
.
dense_shape
,
value
.
values
.
dtype
)
else
:
return
cls
.
from_value
(
SparseTensor
.
from_value
(
value
))
else
:
raise
TypeError
(
"Expected SparseTensor or SparseTensorValue. Received: "
f"
{
value
}
of type
{
type
(
value
).
__name__
}
."
)
nested_structure_coder
.
register_codec
(
nested_structure_coder
.
BuiltInTypeSpecCodec
(
SparseTensorSpec
,
struct_pb2
.
TypeSpecProto
.
SPARSE_TENSOR_SPEC
)
)
# TODO(b/133606651) Delete the SparseTensor registration when CompositeTensor
# is updated to define a _type_spec field (since registration will be
# automatic). Do *not* delete the SparseTensorValue registration.
type_spec
.
register_type_spec_from_value_converter
(
SparseTensor
,
SparseTensorSpec
.
from_value
)
type_spec
.
register_type_spec_from_value_converter
(
SparseTensorValue
,
SparseTensorSpec
.
from_value
)
@
tf_export
(
v1
=
[
"convert_to_tensor_or_sparse_tensor"
])
def
convert_to_tensor_or_sparse_tensor
(
value
,
dtype
=
None
,
name
=
None
):
"""Converts value to a `SparseTensor` or `Tensor`.
Args:
value: A `SparseTensor`, `SparseTensorValue`, or an object whose type has a
registered `Tensor` conversion function.
dtype: Optional element type for the returned tensor. If missing, the type
is inferred from the type of `value`.
name: Optional name to use if a new `Tensor` is created.
Returns:
A `SparseTensor` or `Tensor` based on `value`.
Raises:
RuntimeError: If result type is incompatible with `dtype`.
"""
if
dtype
is
not
None
:
dtype
=
dtypes
.
as_dtype
(
dtype
)
if
isinstance
(
value
,
SparseTensorValue
):
value
=
SparseTensor
.
from_value
(
value
)
if
isinstance
(
value
,
SparseTensor
):
if
dtype
and
not
dtype
.
is_compatible_with
(
value
.
dtype
):
raise
RuntimeError
(
f"Sparse dtype mismatch. Requested:
{
dtype
.
name
}
, "
f" Actual:
{
value
.
dtype
.
name
}
"
)
return
value
return
ops
.
convert_to_tensor
(
value
,
dtype
=
dtype
,
name
=
name
)
def
is_sparse
(
x
):
"""Check whether `x` is sparse.
Check whether an object is a `tf.sparse.SparseTensor` or
`tf.compat.v1.SparseTensorValue`.
Args:
x: A python object to check.
Returns:
`True` iff `x` is a `tf.sparse.SparseTensor` or
`tf.compat.v1.SparseTensorValue`.
"""
return
isinstance
(
x
, (
SparseTensor
,
SparseTensorValue
))
# Conversion table for __truediv__. None entries mean no conversion required.
_TRUEDIV_TABLE
=
{
dtypes
.
uint8
:
dtypes
.
float32
,
dtypes
.
int8
:
dtypes
.
float32
,
dtypes
.
uint16
:
dtypes
.
float32
,
dtypes
.
int16
:
dtypes
.
float32
,
dtypes
.
uint32
:
dtypes
.
float64
,
dtypes
.
int32
:
dtypes
.
float64
,
dtypes
.
uint64
:
dtypes
.
float64
,
dtypes
.
int64
:
dtypes
.
float64
,
dtypes
.
bfloat16
:
None
,
dtypes
.
float16
:
None
,
dtypes
.
float32
:
None
,
dtypes
.
float64
:
None
,
dtypes
.
complex64
:
None
,
dtypes
.
complex128
:
None
,
}
# NOTE: the support of "sparse (true)div dense" is currently not baked in into
# "tf.(true_)div()". Until such an API decision is made, the supported usage is
# to explicitly use the "/" operator to invoke either truediv or div.
def
_sparse_dense_truediv
(
sp_indices
,
sp_values
,
sp_shape
,
y
,
name
=
None
):
"""Internal helper function for 'sp_t / dense_t'."""
with
ops
.
name_scope
(
name
,
"truediv"
, [
sp_indices
,
sp_values
,
sp_shape
,
y
]
)
as
name
:
sp_values
=
ops
.
convert_to_tensor
(
sp_values
,
name
=
"sp_values"
)
y
=
ops
.
convert_to_tensor
(
y
,
name
=
"y"
)
x_dtype
=
sp_values
.
dtype
.
base_dtype
y_dtype
=
y
.
dtype
.
base_dtype
if
x_dtype
!=
y_dtype
:
raise
TypeError
(
"`x` and `y` must have the same dtype, "
f"got
{
x_dtype
!r
}
!=
{
y_dtype
!r
}
."
)
try
:
dtype
=
_TRUEDIV_TABLE
[
x_dtype
]
except
KeyError
as
exc
:
raise
TypeError
(
f"Invalid dtype
{
x_dtype
!r
}
in __truediv__. Expected one "
f"of {{
{
', '
.
join
([
repr
(
x
)
for
x
in
_TRUEDIV_TABLE
.
keys
()])
}
}}."
)
from
exc
if
dtype
is
not
None
:
sp_values
=
gen_math_ops
.
cast
(
sp_values
,
dtype
)
y
=
gen_math_ops
.
cast
(
y
,
dtype
)
return
gen_sparse_ops
.
sparse_dense_cwise_div
(
sp_indices
,
sp_values
,
sp_shape
,
y
,
name
=
name
)
# NOTE(aselle): When integer division is added for sparse_dense_cwise,
# div, truediv, and floordiv should be delegated appropriately for
# Python semantics, analogous to dense cwise tensor operations.
override_binary_operator
.
override_binary_operator_helper
(
gen_sparse_ops
.
sparse_dense_cwise_div
,
"div"
,
SparseTensor
)
# pylint: disable=protected-access
override_binary_operator
.
override_binary_operator_helper
(
_sparse_dense_truediv
,
"truediv"
,
SparseTensor
)
# pylint: disable=protected-access
override_binary_operator
.
override_binary_operator_helper
(
gen_sparse_ops
.
sparse_dense_cwise_mul
,
"mul"
,
SparseTensor
)
# pylint: disable=protected-access
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