Reproduce “From a Single Demonstration to a General Policy for Contact-Rich Manipulation” on OpenResearch

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About this paper

Xing Li, Oliver Brock

The authors present a robot policy that follows surfaces, joints, and changes in contact rather than replaying a demonstrated path. The system identifies environmental constraints through autonomous exploration and can incorporate targeted human corrections. On an unseen green puzzle, it completed the internal-pin sequence in 10/10 trials, while one-shot Trajectory Transfer completed 0/10, but this does not establish general manipulation.

Key insights

  • Environmental Constraints (ECs) serve as an effective inductive bias in LfD, allowing robots to separate general task structure from instance-specific details and achieve strong generalization in contact-rich tasks from minimal demonstrations.
  • Online adaptation of EC models through continuous sensory feedback and compliant control is critical for robustness in real-world physical interaction, enabling adaptation to imprecise initial models and unexpected variations during execution.
  • A modular, interpretable policy structure based on EC primitives facilitates straightforward failure detection and targeted human corrections for out-of-distribution variations, significantly reducing the effort for policy refinement.

Summary by alphaXiv.

Tip: change arxiv.org to autoarxiv.org in any arXiv abstract link to open the paper here.