Learning to Ground Multi-Agent Communication with Autoencoders
This addresses communication bottlenecks in multi-agent systems, though it is incremental as it applies a standard method to a known challenge.
The paper tackles the problem of establishing a common language for decentralized multi-agent communication by grounding it in learned representations, using autoencoding to achieve strong task performance across various environments.
Communication requires having a common language, a lingua franca, between agents. This language could emerge via a consensus process, but it may require many generations of trial and error. Alternatively, the lingua franca can be given by the environment, where agents ground their language in representations of the observed world. We demonstrate a simple way to ground language in learned representations, which facilitates decentralized multi-agent communication and coordination. We find that a standard representation learning algorithm -- autoencoding -- is sufficient for arriving at a grounded common language. When agents broadcast these representations, they learn to understand and respond to each other's utterances and achieve surprisingly strong task performance across a variety of multi-agent communication environments.