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Recurrent Independent Mechanisms

2019-09-24ICLR 2021Code Available0· sign in to hype

Anirudh Goyal, Alex Lamb, Jordan Hoffmann, Shagun Sodhani, Sergey Levine, Yoshua Bengio, Bernhard Schölkopf

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Abstract

Learning modular structures which reflect the dynamics of the environment can lead to better generalization and robustness to changes which only affect a few of the underlying causes. We propose Recurrent Independent Mechanisms (RIMs), a new recurrent architecture in which multiple groups of recurrent cells operate with nearly independent transition dynamics, communicate only sparingly through the bottleneck of attention, and are only updated at time steps where they are most relevant. We show that this leads to specialization amongst the RIMs, which in turn allows for dramatically improved generalization on tasks where some factors of variation differ systematically between training and evaluation.

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Benchmark Results

DatasetModelMetricClaimedVerifiedStatus
Atari 2600 Beam RiderRIMs-PPOScore5,320Unverified
Atari 2600 Up and DownRIMs-PPOScore390,000Unverified
Atari 2600 ZaxxonRIMs-PPOScore15,000Unverified

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