# {py:mod}`evorl.algorithms.meta.pbt_operations`

```{py:module} evorl.algorithms.meta.pbt_operations
```

```{autodoc2-docstring} evorl.algorithms.meta.pbt_operations
:parser: autodoc2_docstrings_parser
:allowtitles:
```

## Module Contents

### Functions

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

* - {py:obj}`explore <evorl.algorithms.meta.pbt_operations.explore>`
  - ```{autodoc2-docstring} evorl.algorithms.meta.pbt_operations.explore
    :parser: autodoc2_docstrings_parser
    :summary:
    ```
* - {py:obj}`select <evorl.algorithms.meta.pbt_operations.select>`
  - ```{autodoc2-docstring} evorl.algorithms.meta.pbt_operations.select
    :parser: autodoc2_docstrings_parser
    :summary:
    ```
````

### API

````{py:function} explore(parent: chex.ArrayTree, key: chex.PRNGKey, perturb_factor: dict[str, float], search_space: dict[str, dict[str, float]])
:canonical: evorl.algorithms.meta.pbt_operations.explore

```{autodoc2-docstring} evorl.algorithms.meta.pbt_operations.explore
:parser: autodoc2_docstrings_parser
```
````

````{py:function} select(pop_episode_returns: chex.Array, key: chex.PRNGKey, bottoms_num: int, tops_num: int)
:canonical: evorl.algorithms.meta.pbt_operations.select

```{autodoc2-docstring} evorl.algorithms.meta.pbt_operations.select
:parser: autodoc2_docstrings_parser
```
````