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A sparse representation of a set of tensor slices at given indices.
tf.IndexedSlices( values, indices, dense_shape=None )
This class is a simple wrapper for a pair of Tensor
objects:
values
: A Tensor
of any dtype with shape [D0, D1, ..., Dn]
.indices
: A 1-D integer Tensor
with shape [D0]
.An IndexedSlices
is typically used to represent a subset of a larger tensor dense
of shape [LARGE0, D1, .. , DN]
where LARGE0 >> D0
. The values in indices
are the indices in the first dimension of the slices that have been extracted from the larger tensor.
The dense tensor dense
represented by an IndexedSlices
slices
has
dense[slices.indices[i], :, :, :, ...] = slices.values[i, :, :, :, ...]
The IndexedSlices
class is used principally in the definition of gradients for operations that have sparse gradients (e.g. tf.gather
).
Contrast this representation with tf.SparseTensor
, which uses multi-dimensional indices and scalar values.
Attributes | |
---|---|
dense_shape | A 1-D Tensor containing the shape of the corresponding dense tensor. |
device | The name of the device on which values will be produced, or None . |
dtype | The DType of elements in this tensor. |
graph | The Graph that contains the values, indices, and shape tensors. |
indices | A 1-D Tensor containing the indices of the slices. |
name | The name of this IndexedSlices . |
op | The Operation that produces values as an output. |
values | A Tensor containing the values of the slices. |
consumers
consumers()
__neg__
__neg__()
© 2020 The TensorFlow Authors. All rights reserved.
Licensed under the Creative Commons Attribution License 3.0.
Code samples licensed under the Apache 2.0 License.
https://www.tensorflow.org/versions/r1.15/api_docs/python/tf/IndexedSlices