Communications of the ACM
Crowdsourced Feedback Helps Train Robots
This new approach allows feedback to be gathered asynchronously, so nonexpert users around the world can contribute to teaching the agent.
Credit: Christine Daniloff, MIT/iStock
A reinforcement learning approach developed by researchers at the Massachusetts Institute of Technology (MIT), Harvard University, and the University of Washington trains robots using crowdsourced feedback from nonexpert users.
MIT's Marcel Torne said that with the Human Guided Exploration (HuGE) method, "The reward function guides the agent to what it should explore, instead of telling it exactly what it should do to complete the task."
The researchers divided the process into two parts, using a goal selector algorithm updated continuously with crowdsourced human feedback and another algorithm that enables the artificial intelligence agent to explore in a self-supervised manner guided by the goal selector.
In both simulated and real-world tests, HuGE enabled agents to complete goals more quickly than other methods.
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