# {py:mod}`evorl.ec.optimizers.vanilla_es`

```{py:module} evorl.ec.optimizers.vanilla_es
```

```{autodoc2-docstring} evorl.ec.optimizers.vanilla_es
:parser: autodoc2_docstrings_parser
:allowtitles:
```

## Module Contents

### Classes

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

* - {py:obj}`VanillaES <evorl.ec.optimizers.vanilla_es.VanillaES>`
  - ```{autodoc2-docstring} evorl.ec.optimizers.vanilla_es.VanillaES
    :parser: autodoc2_docstrings_parser
    :summary:
    ```
* - {py:obj}`VanillaESMod <evorl.ec.optimizers.vanilla_es.VanillaESMod>`
  - ```{autodoc2-docstring} evorl.ec.optimizers.vanilla_es.VanillaESMod
    :parser: autodoc2_docstrings_parser
    :summary:
    ```
* - {py:obj}`VanillaESState <evorl.ec.optimizers.vanilla_es.VanillaESState>`
  - ```{autodoc2-docstring} evorl.ec.optimizers.vanilla_es.VanillaESState
    :parser: autodoc2_docstrings_parser
    :summary:
    ```
````

### API

`````{py:class} VanillaES
:canonical: evorl.ec.optimizers.vanilla_es.VanillaES

Bases: {py:obj}`evorl.ec.optimizers.ec_optimizer.EvoOptimizer`

```{autodoc2-docstring} evorl.ec.optimizers.vanilla_es.VanillaES
:parser: autodoc2_docstrings_parser
```

````{py:method} ask(state: evorl.ec.optimizers.vanilla_es.VanillaESState) -> tuple[evorl.types.Params, evorl.ec.optimizers.vanilla_es.VanillaESState]
:canonical: evorl.ec.optimizers.vanilla_es.VanillaES.ask

````

````{py:attribute} elite_weights
:canonical: evorl.ec.optimizers.vanilla_es.VanillaES.elite_weights
:type: chex.Array
:value: >
   'pytree_field(...)'

```{autodoc2-docstring} evorl.ec.optimizers.vanilla_es.VanillaES.elite_weights
:parser: autodoc2_docstrings_parser
```

````

````{py:method} init(mean: evorl.types.Params, key: chex.PRNGKey) -> evorl.ec.optimizers.vanilla_es.VanillaESState
:canonical: evorl.ec.optimizers.vanilla_es.VanillaES.init

```{autodoc2-docstring} evorl.ec.optimizers.vanilla_es.VanillaES.init
:parser: autodoc2_docstrings_parser
```

````

````{py:attribute} noise_std_schedule
:canonical: evorl.ec.optimizers.vanilla_es.VanillaES.noise_std_schedule
:type: evorl.ec.optimizers.utils.ExponentialScheduleSpec
:value: >
   None

```{autodoc2-docstring} evorl.ec.optimizers.vanilla_es.VanillaES.noise_std_schedule
:parser: autodoc2_docstrings_parser
```

````

````{py:attribute} num_elites
:canonical: evorl.ec.optimizers.vanilla_es.VanillaES.num_elites
:type: int
:value: >
   None

```{autodoc2-docstring} evorl.ec.optimizers.vanilla_es.VanillaES.num_elites
:parser: autodoc2_docstrings_parser
```

````

````{py:attribute} pop_size
:canonical: evorl.ec.optimizers.vanilla_es.VanillaES.pop_size
:type: int
:value: >
   None

```{autodoc2-docstring} evorl.ec.optimizers.vanilla_es.VanillaES.pop_size
:parser: autodoc2_docstrings_parser
```

````

````{py:method} tell(state: evorl.ec.optimizers.vanilla_es.VanillaESState, fitnesses: chex.Array) -> tuple[evorl.types.PyTreeDict, evorl.ec.optimizers.vanilla_es.VanillaESState]
:canonical: evorl.ec.optimizers.vanilla_es.VanillaES.tell

````

`````

`````{py:class} VanillaESMod
:canonical: evorl.ec.optimizers.vanilla_es.VanillaESMod

Bases: {py:obj}`evorl.ec.optimizers.vanilla_es.VanillaES`

```{autodoc2-docstring} evorl.ec.optimizers.vanilla_es.VanillaESMod
:parser: autodoc2_docstrings_parser
```

````{py:attribute} external_size
:canonical: evorl.ec.optimizers.vanilla_es.VanillaESMod.external_size
:type: int
:value: >
   None

```{autodoc2-docstring} evorl.ec.optimizers.vanilla_es.VanillaESMod.external_size
:parser: autodoc2_docstrings_parser
```

````

````{py:attribute} mix_strategy
:canonical: evorl.ec.optimizers.vanilla_es.VanillaESMod.mix_strategy
:type: str
:value: >
   'always'

```{autodoc2-docstring} evorl.ec.optimizers.vanilla_es.VanillaESMod.mix_strategy
:parser: autodoc2_docstrings_parser
```

````

````{py:method} tell_external(state: evorl.ec.optimizers.vanilla_es.VanillaESState, fitnesses: chex.Array) -> tuple[evorl.types.PyTreeDict, evorl.ec.optimizers.vanilla_es.VanillaESState]
:canonical: evorl.ec.optimizers.vanilla_es.VanillaESMod.tell_external

```{autodoc2-docstring} evorl.ec.optimizers.vanilla_es.VanillaESMod.tell_external
:parser: autodoc2_docstrings_parser
```

````

`````

`````{py:class} VanillaESState
:canonical: evorl.ec.optimizers.vanilla_es.VanillaESState

Bases: {py:obj}`evorl.types.PyTreeData`

```{autodoc2-docstring} evorl.ec.optimizers.vanilla_es.VanillaESState
:parser: autodoc2_docstrings_parser
```

````{py:attribute} key
:canonical: evorl.ec.optimizers.vanilla_es.VanillaESState.key
:type: chex.PRNGKey
:value: >
   None

```{autodoc2-docstring} evorl.ec.optimizers.vanilla_es.VanillaESState.key
:parser: autodoc2_docstrings_parser
```

````

````{py:attribute} mean
:canonical: evorl.ec.optimizers.vanilla_es.VanillaESState.mean
:type: chex.ArrayTree
:value: >
   None

```{autodoc2-docstring} evorl.ec.optimizers.vanilla_es.VanillaESState.mean
:parser: autodoc2_docstrings_parser
```

````

````{py:attribute} noise
:canonical: evorl.ec.optimizers.vanilla_es.VanillaESState.noise
:type: None | chex.ArrayTree
:value: >
   None

```{autodoc2-docstring} evorl.ec.optimizers.vanilla_es.VanillaESState.noise
:parser: autodoc2_docstrings_parser
```

````

````{py:attribute} noise_std
:canonical: evorl.ec.optimizers.vanilla_es.VanillaESState.noise_std
:type: chex.Array
:value: >
   None

```{autodoc2-docstring} evorl.ec.optimizers.vanilla_es.VanillaESState.noise_std
:parser: autodoc2_docstrings_parser
```

````

`````