New MT3 Paradigm Enables Robots to Learn 1000 Tasks in Under 24 Hours

chris_j_paxton · x · 2026-07-31

A new study from Imperial College London introduces Multi-Task Trajectory Transfer (MT3), a highly efficient imitation learning paradigm that made the cover of Science Robotics.

The core idea involves decomposing manipulation trajectories into sequential alignment and interaction phases, combined with retrieval-based generalisation. In the few-shot regime (<10 demonstrations per task), this decomposition improves data efficiency by an order of magnitude over traditional single-phase behavioral cloning.

Thanks to this efficiency, MT3 can teach a robot 1000 distinct everyday tasks in under 24 hours of human demonstration time (approx. 17 hours), while generalising to unseen object instances. The team validated the method's capabilities and limitations across more than 5,650 real-world rollouts.

Related event: New Robot Learning Paradigm on Science Robotics: 1000 Tasks in a Day(2 posts)→

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