Table Of Contents
Table Of Contents

mx.symbol.one_hot

Description

Returns a one-hot array.

The locations represented by indices take value on_value, while all other locations take value off_value.

one_hot operation with indices of shape (i0, i1) and depth of d would result in an output array of shape (i0, i1, d) with:

output[i,j,:] = off_value
output[i,j,indices[i,j]] = on_value

Example:

one_hot([1,0,2,0], 3) = [[ 0.  1.  0.]
[ 1.  0.  0.]
[ 0.  0.  1.]
[ 1.  0.  0.]]

one_hot([1,0,2,0], 3, on_value=8, off_value=1,
dtype='int32') = [[1 8 1]
[8 1 1]
[1 1 8]
[8 1 1]]

one_hot([[1,0],[1,0],[2,0]], 3) = [[[ 0.  1.  0.]
[ 1.  0.  0.]]

[[ 0.  1.  0.]
[ 1.  0.  0.]]

[[ 0.  0.  1.]
[ 1.  0.  0.]]]

Usage

mx.symbol.one_hot(...)

Arguments

Argument

Description

indices

NDArray-or-Symbol array of locations where to set on_value

depth

int, required.

Depth of the one hot dimension.

on.value

double, optional, default=1.

The value assigned to the locations represented by indices.

off.value

double, optional, default=0.

The value assigned to the locations not represented by indices.

dtype

{‘float16’, ‘float32’, ‘float64’, ‘int32’, ‘int64’, ‘int8’, ‘uint8’},optional, default=’float32’.

DType of the output

name

string, optional.

Name of the resulting symbol.