# {py:mod}`evox.algorithms.so.es_variants.nes`

```{py:module} evox.algorithms.so.es_variants.nes
```

```{autodoc2-docstring} evox.algorithms.so.es_variants.nes
:allowtitles:
```

## Module Contents

### Classes

````{list-table}
:class: autosummary longtable
:align: left

* - {py:obj}`XNES <evox.algorithms.so.es_variants.nes.XNES>`
  - ```{autodoc2-docstring} evox.algorithms.so.es_variants.nes.XNES
    :summary:
    ```
* - {py:obj}`SeparableNES <evox.algorithms.so.es_variants.nes.SeparableNES>`
  - ```{autodoc2-docstring} evox.algorithms.so.es_variants.nes.SeparableNES
    :summary:
    ```
````

### API

`````{py:class} XNES(init_mean: torch.Tensor, init_covar: torch.Tensor, pop_size: int | None = None, recombination_weights: torch.Tensor | None = None, learning_rate_mean: float | None = None, learning_rate_var: float | None = None, learning_rate_B: float | None = None, covar_as_cholesky: bool = False, device: torch.device | None = None)
:canonical: evox.algorithms.so.es_variants.nes.XNES

Bases: {py:obj}`evox.core.Algorithm`

```{autodoc2-docstring} evox.algorithms.so.es_variants.nes.XNES
```

```{rubric} Initialization
```

```{autodoc2-docstring} evox.algorithms.so.es_variants.nes.XNES.__init__
```

````{py:method} step()
:canonical: evox.algorithms.so.es_variants.nes.XNES.step

```{autodoc2-docstring} evox.algorithms.so.es_variants.nes.XNES.step
```

````

````{py:method} record_step()
:canonical: evox.algorithms.so.es_variants.nes.XNES.record_step

````

`````

`````{py:class} SeparableNES(init_mean: torch.Tensor, init_std: torch.Tensor, pop_size: int | None = None, recombination_weights: torch.Tensor | None = None, learning_rate_mean: float | None = None, learning_rate_var: float | None = None, device: torch.device | None = None)
:canonical: evox.algorithms.so.es_variants.nes.SeparableNES

Bases: {py:obj}`evox.core.Algorithm`

```{autodoc2-docstring} evox.algorithms.so.es_variants.nes.SeparableNES
```

```{rubric} Initialization
```

```{autodoc2-docstring} evox.algorithms.so.es_variants.nes.SeparableNES.__init__
```

````{py:method} step()
:canonical: evox.algorithms.so.es_variants.nes.SeparableNES.step

```{autodoc2-docstring} evox.algorithms.so.es_variants.nes.SeparableNES.step
```

````

````{py:method} record_step()
:canonical: evox.algorithms.so.es_variants.nes.SeparableNES.record_step

````

`````