MANIPULATIONCURRENT2026-04-22

Visual-Tactile Peg-in-Hole Assembly Learning from Peg-out-of-Hole Disassembly

Yongqiang Zhao, Xuyang Zhang, Zhuo Chen, Matteo Leonetti, Emmanouil Spyrakos-Papastavridis, Shan Luo

This shows how to learn precision Manipulation & TasksAssemblyPutting components together in a structured way. tasks more efficiently by Robot LearningTrainingThe process of fitting a model using data or experience. on the inverse (disassembly) Core ConceptsTaskThe job the robot is supposed to complete, such as pick-and-place, navigation, or drawer opening. first, then reversing trajectories to bootstrap the harder Manipulation & TasksAssemblyPutting components together in a structured way. problem. The result: 87.5% success on peg-in-hole by combining visual and Perception & SensingTactile sensingTouch sensing through fingers, skin, or contact surfaces., beating direct Imitation & Reinforcement LearningReinforcement Learning (RL)Teaching a robot through trial and error using rewards. methods by 18.1% while using less Imitation & Reinforcement LearningExplorationTrying different actions to discover useful behavior. data.

THE PROBLEM

This paper focuses on Manipulation & TasksManipulationUsing a robot arm or hand to move or interact with objects.. This shows how to learn precision Manipulation & TasksAssemblyPutting components together in a structured way. tasks more efficiently by Robot LearningTrainingThe process of fitting a model using data or experience. on the inverse (disassembly) Core ConceptsTaskThe job the robot is supposed to complete, such as pick-and-place, navigation, or drawer opening. first, then reversing trajectories to bootstrap the harder Manipulation & TasksAssemblyPutting components together in a structured way. problem. The result: 87.5% success on peg-in-hole by combining visual and Perception & SensingTactile sensingTouch sensing through fingers, skin, or contact surfaces., beating direct Imitation & Reinforcement LearningReinforcement Learning (RL)Teaching a robot through trial and error using rewards. methods by 18.1% while using less Imitation & Reinforcement LearningExplorationTrying different actions to discover useful behavior. data. Read the paper by tracking the Core ConceptsTaskThe job the robot is supposed to complete, such as pick-and-place, navigation, or drawer opening. definition, the Core ConceptsRobotA physical system with sensors and actuators that can observe the world and take actions. or data assumptions, and the evidence that supports the claimed improvement.

HOW IT WORKS

1

Task framing

The paper frames the work as Manipulation & TasksManipulationUsing a robot arm or hand to move or interact with objects.. Start here because it defines what success means and which assumptions the rest of the method inherits.

2

Core method

This shows how to learn precision Manipulation & TasksAssemblyPutting components together in a structured way. tasks more efficiently by Robot LearningTrainingThe process of fitting a model using data or experience. on the inverse (disassembly) Core ConceptsTaskThe job the robot is supposed to complete, such as pick-and-place, navigation, or drawer opening. first, then reversing trajectories to bootstrap the harder Manipulation & TasksAssemblyPutting components together in a structured way. problem. The result: 87.5% success on peg-in-hole by combining visual and Perception & SensingTactile sensingTouch sensing through fingers, skin, or contact surfaces., beating direct Imitation & Reinforcement LearningReinforcement Learning (RL)Teaching a robot through trial and error using rewards. methods by 18.1% while using less Imitation & Reinforcement LearningExplorationTrying different actions to discover useful behavior. data. When reading the method section, identify the inputs, the learned or engineered representation, and the Core ConceptsActionA command the robot sends to its motors, controller, or low-level system. or prediction produced by the system.

3

Data and supervision

For robotics work, the data story is part of the method: check whether the system depends on Imitation & Reinforcement LearningTeleoperation (teleop)A human remotely controlling the robot, often to collect demonstrations., Simulation & Sim-to-RealSimulationA virtual environment where robots can be trained or tested., internet video, human labels, or Core ConceptsRobotA physical system with sensors and actuators that can observe the world and take actions. rollouts.

4

Evaluation evidence

The paper should be judged through its Simulation & Sim-to-RealEvaluationMeasuring how well a robot system performs. protocol: what data is used, what Core ConceptsRobotA physical system with sensors and actuators that can observe the world and take actions. or simulator is tested, and which Evaluation & ResearchBaselineA reference method used for comparison. comparisons support the claim. Look for the gap between the headline result and the Simulation & Sim-to-RealDeploymentPutting the trained system on a real robot. setting you would actually care about.

FIGURES

KEY RESULTS

Main contributionConceptual contribution

This shows how to learn precision Manipulation & TasksAssemblyPutting components together in a structured way. tasks more efficiently by Robot LearningTrainingThe process of fitting a model using data or experience. on the inverse (disassembly) Core ConceptsTaskThe job the robot is supposed to complete, such as pick-and-place, navigation, or drawer opening. first, then reversing trajectories to bootstrap the harder Manipulation & TasksAssemblyPutting components together in a structured way. problem. The result: 87.5% success on peg-in-hole by combining visual and Perception & SensingTactile sensingTouch sensing through fingers, skin, or contact surfaces., beating direct Imitation & Reinforcement LearningReinforcement Learning (RL)Teaching a robot through trial and error using rewards. methods by 18.1% while using less Imitation & Reinforcement LearningExplorationTrying different actions to discover useful behavior. data.

WHY DEVELOPERS SHOULD CARE

This shows how to learn precision Manipulation & TasksAssemblyPutting components together in a structured way. tasks more efficiently by Robot LearningTrainingThe process of fitting a model using data or experience. on the inverse (disassembly) Core ConceptsTaskThe job the robot is supposed to complete, such as pick-and-place, navigation, or drawer opening. first, then reversing trajectories to bootstrap the harder Manipulation & TasksAssemblyPutting components together in a structured way. problem. The result: 87.5% success on peg-in-hole by combining visual and Perception & SensingTactile sensingTouch sensing through fingers, skin, or contact surfaces., beating direct Imitation & Reinforcement LearningReinforcement Learning (RL)Teaching a robot through trial and error using rewards. methods by 18.1% while using less Imitation & Reinforcement LearningExplorationTrying different actions to discover useful behavior. data.

LIMITATIONS

The main limitation to check is whether the claimed behavior holds outside the paper's reported setup. That means testing across different Core ConceptsRobotA physical system with sensors and actuators that can observe the world and take actions. embodiments, scenes, objects, and data distributions.

WHAT COMES NEXT

The practical next step is independent reproduction with clear baselines, ablations, and stress tests. For a developer, the useful follow-up is to map the paper's Manipulation & TasksManipulationUsing a robot arm or hand to move or interact with objects. assumptions onto a concrete Core ConceptsRobotA physical system with sensors and actuators that can observe the world and take actions. stack, then test the smallest version of the method that could run end to end.

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