Methods › Reinforcement Learning › RL Transformers › GTrXL
Gated Transformer-XL
GTrXL
Introduced by Emilio Parisotto et al. in Stabilizing Transformers for Reinforcement Learning
archive 2025-07-28 Description, source and code snippet are the archive's method entry.
Gated Transformer-XL, or GTrXL, is a Transformer-based architecture for reinforcement learning. It introduces architectural modifications that improve the stability and learning speed of the original Transformer and XL variant. Changes include:
- Placing the layer normalization on only the input stream of the submodules. A key benefit to this reordering is that it now enables an identity map from the input of the transformer at the first layer to the output of the transformer after the last layer. This is in contrast to the canonical transformer, where there are a series of layer normalization operations that non-linearly transform the state encoding.
- Replacing residual connections with gating layers. The authors' experiments found that GRUs were the most effective form of gating.
Papers archive 2025-07-28
3 shown of 3, newest first. Repository counts are the archive's code-links table. A Syntology line states what Syntology ran from that paper's harvested code; it is per sample and not a correctness claim.
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AGaLiTe: Approximate Gated Linear Transformers for Online Reinforcement Learning 24 Oct 2023 · 2 repositories · arXiv:2310.15719Syntology ran 7 of 11 samples · 4 unverified
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CoBERL: Contrastive BERT for Reinforcement Learning 12 Jul 2021 · 2 repositories · arXiv:2107.05431Syntology ran 3 of 3 samples · 0 unverified
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Stabilizing Transformers for Reinforcement Learning 13 Oct 2019 · 5 repositories · arXiv:1910.06764Syntology ran 3 of 3 samples · 0 unverified · 3 pointer-only (licence)
Tasks archive 2025-07-28
9 tasks the archive attaches to papers tagged with this method, by distinct papers. A task without a page in the catalog is plain text.
Usage over time archive 2025-07-28
Components: the archive holds no method-to-method composition, so PwC's Components table cannot be rebuilt; the Papers list carries no Results column for the same reason (the archive does not join its leaderboard rows to method tags).
Categories archive 2025-07-28
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