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• W3031015890 abstract "Nonstationarity is a fundamental problem in cooperative multi-agent reinforcement learning (MARL)--each agent must relearn information about the other agent's policies due to the other agents learning, causing information to ring between agents and convergence to be slow. The MAILP model, introduced by Terry and Grammel (2020), is a novel model of information transfer during multi-agent learning. We use the MAILP model to show that increasing training centralization arbitrarily mitigates the slowing of convergence due to nonstationarity. The most centralized case of learning is parameter sharing, an uncommonly used MARL method, specific to environments with homogeneous agents, that bootstraps a single-agent reinforcement learning (RL) methods and learns an identical policy for each agent. We experimentally replicate the result of increased learning centralization leading to better performance on the MARL benchmark set from Gupta et al. (2017). We further apply parameter sharing to 8 modern single-agent deep RL (DRL) methods for the first time in the literature. With this, we achieved the best documented performance on a set of MARL benchmarks and achieved upto 44 times more average reward in as little as 16% as many episodes compared to documented parameter sharing arrangement. We finally offer a formal proof of a set of methods that allow parameter sharing to serve in environments with heterogeneous agents." @default.
• W3031015890 created "2020-06-05" @default.
• W3031015890 creator A5004194238 @default.
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• W3031015890 date "2020-05-27" @default.
• W3031015890 modified "2023-09-24" @default.
• W3031015890 title "Parameter Sharing is Surprisingly Useful for Multi-Agent Deep Reinforcement Learning." @default.
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• W3031015890 hasPublicationYear "2020" @default.
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