Computes the inverse permutation of a tensor.
tf.math.invert_permutation( x, name=None )
This operation computes the inverse of an index permutation. It takes a 1-D integer tensor x
, which represents the indices of a zero-based array, and swaps each value with its index position. In other words, for an output tensor y
and an input tensor x
, this operation computes the following:
y[x[i]] = i for i in [0, 1, ..., len(x) - 1]
The values must include 0. There can be no duplicate values or negative values.
# tensor `x` is [3, 4, 0, 2, 1] invert_permutation(x) ==> [2, 4, 3, 0, 1]
Args | |
---|---|
x | A Tensor . Must be one of the following types: int32 , int64 . 1-D. |
name | A name for the operation (optional). |
Returns | |
---|---|
A Tensor . Has the same type as x . |
© 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/r2.3/api_docs/python/tf/math/invert_permutation