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Mixtures of Experts Unlock Parameter Scaling for Deep RL

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arxiv 2402.08609 v3 pith:YFE5TSVZ submitted 2024-02-13 cs.LG cs.AI

classification cs.LGcs.AI
keywords scalinglawslearningmodelperformanceempiricalmodelsparameter
verification ladder T0 review T1 audit T2 compute T3 formal
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The recent rapid progress in (self) supervised learning models is in large part predicted by empirical scaling laws: a model's performance scales proportionally to its size. Analogous scaling laws remain elusive for reinforcement learning domains, however, where increasing the parameter count of a model often hurts its final performance. In this paper, we demonstrate that incorporating Mixture-of-Expert (MoE) modules, and in particular Soft MoEs (Puigcerver et al., 2023), into value-based networks results in more parameter-scalable models, evidenced by substantial performance increases across a variety of training regimes and model sizes. This work thus provides strong empirical evidence towards developing scaling laws for reinforcement learning.

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Cited by 10 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Scalable Reinforcement Learning via Adaptive Batch Scaling

    stat.ML 2026-05 unverdicted novelty 7.0 of 10

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    A 24-dataset benchmark for inducing schema graphs from raw text, plus an auditable LLM-based pipeline that reports the highest scores on the benchmark's four schema-similarity metrics.

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    Extends DAE theory to POMDPs with minimal changes and introduces discrete latent dynamics to cut computational cost, with ALE experiments showing scalability and retained sample efficiency.

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    Adaptive Batch Scaling dynamically increases batch size in on-policy RL as policy volatility drops, measured by a new Behavioral Divergence metric, and shows larger networks plus larger batches outperform on ALE with PQN.

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  10. Is Exploration or Optimization the Problem for Deep Reinforcement Learning?

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    Deep RL agents' best experienced trajectories are 2-3 times better than their learned policy's average return, suggesting exploitation and optimization issues dominate exploration challenges.

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