tf.unique
Finds unique elements in a 1-D tensor.
tf.unique(
x, out_idx=tf.dtypes.int32, name=None
)
This operation returns a tensor y containing all of the unique elements of x sorted in the same order that they occur in x. This operation also returns a tensor idx the same size as x that contains the index of each value of x in the unique output y. In other words:
y[idx[i]] = x[i] for i in [0, 1,...,rank(x) - 1]
For example:
# tensor 'x' is [1, 1, 2, 4, 4, 4, 7, 8, 8]
y, idx = unique(x)
y ==> [1, 2, 4, 7, 8]
idx ==> [0, 0, 1, 2, 2, 2, 3, 4, 4]
| Args | |
|---|---|
x |
A Tensor. 1-D. |
out_idx |
An optional tf.DType from: tf.int32, tf.int64. Defaults to tf.int32. |
name |
A name for the operation (optional). |
| Returns | |
|---|---|
A tuple of Tensor objects (y, idx). |
|
y |
A Tensor. Has the same type as x. |
idx |
A Tensor of type out_idx. |
© 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/unique