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.
For example:
# 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.
|