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COBRA-PPM: A Causal Bayesian Reasoning Architecture Using Probabilistic Programming for Robot Manipulation Under Uncertainty

Created by
  • Haebom

Author

Ricardo Cannizzaro, Michael Groom, Jonathan Routley, Robert Osazuwa Ness, Lars Kunze

Outline

COBRA-PPM is a novel causal Bayesian inference architecture that combines causal Bayesian networks and probabilistic programming to perform interventional inference for robotic manipulation under uncertainty. Its functionality is demonstrated through high-fidelity Gazebo-based experiments, predicting manipulation outcomes with high accuracy (prediction accuracy: 88.6%) in a block stacking task and performing greedy suboptimal selection with a task success rate of 94.2%. Furthermore, sim2real transfer is demonstrated in a domestic robot, demonstrating its effectiveness in handling real-world uncertainty due to sensor noise and probabilistic behavior. This generalizable and scalable framework supports diverse manipulation scenarios and lays the foundation for future research at the intersection of robotics and causality.

Takeaways, Limitations

Takeaways:
We present a novel architecture that effectively handles uncertainty in robotic manipulation by leveraging causal Bayesian inference.
Experimentally verified high prediction accuracy and task success rate.
Demonstrating real-world applicability through sim2real transfer.
Provides a generalized framework applicable to various operation scenarios.
Limitations:
Only experimental results for a specific task, block stacking, are presented, so further research is needed to determine generalizability.
Robustness verification is needed for unexpected situations that may arise in real-world applications.
Further research is needed on the framework's scalability and applicability to complex tasks.
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