[RLlib][docs] Learner API Docs (#37729) (#38137)

Signed-off-by: Avnish <avnishnarayan@gmail.com>

doc/source/_toc.yml

@@ -312,6 +312,7 @@ parts:
               - file: rllib/rllib-catalogs
               - file: rllib/rllib-connector
               - file: rllib/rllib-rlmodule
+              - file: rllib/rllib-learner
               - file: rllib/rllib-torch2x
               - file: rllib/rllib-fault-tolerance
               - file: rllib/rllib-dev

doc/source/rllib/package_ref/index.rst

@@ -27,6 +27,7 @@ If you think there is anything missing, please open an issue on `Github`_.
     models.rst
     catalogs.rst
     rl_modules.rst
+    learner.rst
     evaluation.rst
     replay-buffers.rst
     utils.rst

doc/source/rllib/package_ref/learner.rst

@@ -0,0 +1,156 @@
+.. _learner-reference-docs:
+
+Learner API
+===========
+
+Learner specifications and configurations
+-----------------------------------------
+
+.. currentmodule:: ray.rllib.core.learner.learner
+
+.. autosummary::
+    :toctree: doc/
+
+    FrameworkHyperparameters
+    LearnerHyperparameters
+
+TorchLearner configurations
++++++++++++++++++++++++++++
+
+.. autosummary::
+    :toctree: doc/
+
+    TorchCompileWhatToCompile
+
+Constructor
+-----------
+
+.. autosummary::
+    :toctree: doc/
+
+    Learner
+    Learner.build
+    Learner._check_is_built
+    Learner._make_module
+
+Performing Updates
+------------------
+
+.. autosummary::
+    :toctree: doc/
+
+    Learner.update
+    Learner._update
+    Learner.additional_update
+    Learner.additional_update_for_module
+    Learner._convert_batch_type
+
+
+Computing Losses
+----------------
+
+.. autosummary::
+    :toctree: doc/
+
+    Learner.compute_loss
+    Learner.compute_loss_for_module
+    Learner._is_module_compatible_with_learner
+    Learner._get_tensor_variable
+
+
+Configuring Optimizers
+----------------------
+
+.. autosummary::
+    :toctree: doc/
+
+    Learner.configure_optimizers_for_module
+    Learner.configure_optimizers
+    Learner.register_optimizer
+    Learner.get_optimizers_for_module
+    Learner.get_optimizer
+    Learner.get_parameters
+    Learner.get_param_ref
+    Learner.filter_param_dict_for_optimizer
+    Learner._check_registered_optimizer
+    Learner._set_optimizer_lr
+    Learner._get_clip_function
+
+
+Gradient Computation
+--------------------
+
+.. autosummary::
+    :toctree: doc/
+
+    Learner.compute_gradients
+    Learner.postprocess_gradients
+    Learner.postprocess_gradients_for_module
+    Learner.apply_gradients
+
+Saving, Loading, Checkpointing, and Restoring States
+----------------------------------------------------
+
+.. autosummary::
+    :toctree: doc/
+
+    Learner.save_state
+    Learner.load_state
+    Learner._save_optimizers
+    Learner._load_optimizers
+    Learner.get_state
+    Learner.set_state
+    Learner.get_optimizer_state
+    Learner.set_optimizer_state
+    Learner._get_metadata
+
+Adding and Removing Modules
+---------------------------
+
+.. autosummary::
+    :toctree: doc/
+
+    Learner.add_module
+    Learner.remove_module
+
+Managing Results
+----------------
+
+.. autosummary::
+    :toctree: doc/
+
+    Learner.compile_results
+    Learner.register_metric
+    Learner.register_metrics
+    Learner._check_result
+
+
+
+LearnerGroup API
+================
+
+Configuring a LearnerGroup
+--------------------------
+
+.. autosummary::
+    :toctree: doc/
+
+    LearnerSpec
+
+.. currentmodule:: ray.rllib.core.learner.learner_group
+
+.. autosummary::
+    :toctree: doc/
+
+    LearnerGroup
+
+
+
+
+
+
+
+
+
+
+

doc/source/rllib/package_ref/rl_modules.rst

@@ -6,7 +6,7 @@ RLModule API
 ============
 
 
-RL Module specifications and configuraitons
+RL Module specifications and configurations
 -------------------------------------------
 
 Single Agent