# {py:mod}`evorl.algorithms.meta.pbt_ppo.pbt_cso_param_ppo`

```{py:module} evorl.algorithms.meta.pbt_ppo.pbt_cso_param_ppo
```

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

## Module Contents

### Classes

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

* - {py:obj}`PBTCSOOptState <evorl.algorithms.meta.pbt_ppo.pbt_cso_param_ppo.PBTCSOOptState>`
  -
* - {py:obj}`PBTCSOParamPPOWorkflow <evorl.algorithms.meta.pbt_ppo.pbt_cso_param_ppo.PBTCSOParamPPOWorkflow>`
  -
````

### API

`````{py:class} PBTCSOOptState
:canonical: evorl.algorithms.meta.pbt_ppo.pbt_cso_param_ppo.PBTCSOOptState

Bases: {py:obj}`evorl.algorithms.meta.pbt_workflow.PBTOptState`

````{py:attribute} velocity
:canonical: evorl.algorithms.meta.pbt_ppo.pbt_cso_param_ppo.PBTCSOOptState.velocity
:type: chex.ArrayTree
:value: >
   None

```{autodoc2-docstring} evorl.algorithms.meta.pbt_ppo.pbt_cso_param_ppo.PBTCSOOptState.velocity
:parser: autodoc2_docstrings_parser
```

````

`````

`````{py:class} PBTCSOParamPPOWorkflow(workflow: evorl.workflows.RLWorkflow, evaluator: evorl.evaluators.Evaluator, config: omegaconf.DictConfig)
:canonical: evorl.algorithms.meta.pbt_ppo.pbt_cso_param_ppo.PBTCSOParamPPOWorkflow

Bases: {py:obj}`evorl.algorithms.meta.pbt_ppo.pbt_param_ppo.PBTParamPPOWorkflow`

````{py:method} exploit_and_explore(pbt_opt_state: evorl.algorithms.meta.pbt_workflow.PBTOptState, pop: chex.ArrayTree, pop_workflow_state: evorl.types.State, pop_metrics: chex.ArrayTree, key: chex.PRNGKey) -> tuple[chex.ArrayTree, evorl.types.State, evorl.algorithms.meta.pbt_workflow.PBTOptState]
:canonical: evorl.algorithms.meta.pbt_ppo.pbt_cso_param_ppo.PBTCSOParamPPOWorkflow.exploit_and_explore

```{autodoc2-docstring} evorl.algorithms.meta.pbt_ppo.pbt_cso_param_ppo.PBTCSOParamPPOWorkflow.exploit_and_explore
:parser: autodoc2_docstrings_parser
```

````

````{py:method} name()
:canonical: evorl.algorithms.meta.pbt_ppo.pbt_cso_param_ppo.PBTCSOParamPPOWorkflow.name
:classmethod:

````

`````