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• W3129170303 abstract "Reinforcement learning methods trained on few environments rarely learn policies that generalize to unseen environments. To improve generalization, we incorporate the inherent sequential structure in reinforcement learning into the representation learning process. This approach is orthogonal to recent approaches, which rarely exploit this structure explicitly. Specifically, we introduce a theoretically motivated policy similarity metric (PSM) for measuring behavioral similarity between states. PSM assigns high similarity to states for which the optimal policies in those states as well as in future states are similar. We also present a contrastive representation learning procedure to embed any state similarity metric, which we instantiate with PSM to obtain policy similarity embeddings (PSEs). We demonstrate that PSEs improve generalization on diverse benchmarks, including LQR with spurious correlations, a jumping task from pixels, and Distracting DM Control Suite." @default.
• W3129170303 created "2021-02-15" @default.
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• W3129170303 date "2021-05-03" @default.
• W3129170303 modified "2023-09-24" @default.
• W3129170303 title "Contrastive Behavioral Similarity Embeddings for Generalization in Reinforcement Learning" @default.
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• W3129170303 hasPublicationYear "2021" @default.
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