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[Feature] Implements DreamerV3 (Mastering Diverse Domains in World Models, Hafn… #3621

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[Feature] Implements DreamerV3 (Mastering Diverse Domains in World Models, Hafn… #3621

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Implements DreamerV3 (Mastering Diverse Domains in World Models, Hafn…
theap06 Apr 12, 2026
182811b
Reduces the diff on test_objectives.py to zero and keeps DreamerV3 tests
theap06 Apr 12, 2026
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3 changes: 3 additions & 0 deletions docs/source/reference/modules_models.rst
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Expand Up @@ -14,8 +14,11 @@ Modules for model-based reinforcement learning, including world models and dynam
ObsEncoder
ObsDecoder
RSSMPosterior
RSSMPosteriorV3
RSSMPrior
RSSMPriorV3
RSSMRollout
RSSMRolloutV3

PILCO
-----
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25 changes: 25 additions & 0 deletions docs/source/reference/objectives_other.rst
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Expand Up @@ -16,3 +16,28 @@ Additional loss modules for specialized algorithms.
DreamerModelLoss
DreamerValueLoss
ExponentialQuadraticCost

DreamerV3
---------

Loss modules for DreamerV3 (`Mastering Diverse Domains in World Models, Hafner et al. 2023 <https://arxiv.org/abs/2301.04104>`_).
Key differences from V1: discrete categorical latent state, KL balancing, symlog transforms, and two-hot value distributions.

.. autosummary::
:toctree: generated/
:template: rl_template_noinherit.rst

DreamerV3ActorLoss
DreamerV3ModelLoss
DreamerV3ValueLoss

DreamerV3 Utilities
~~~~~~~~~~~~~~~~~~~

.. autosummary::
:toctree: generated/

symlog
symexp
two_hot_encode
two_hot_decode
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