SIMULATIONCURRENT2026-06-26

SimFoundry: Modular and Automated Scene Generation for Policy Learning and Evaluation

Nadun Ranawaka, Josiah Wong, Wei-Lin Pai, Wei-Teng Chu, Tianyuan Dai, Masoud Moghani, Hang Yin, Yunfan Jiang, Wesley Durbano, Brandon Huynh, Yu Fang, Linxi Fan, Danfei Xu, Ruohan Zhang, Li Fei-Fei, Bowen Wen, Ajay Mandlekar, Yuke Zhu

This eliminates the need to manually build Simulation & Sim-to-RealSimulationA virtual environment where robots can be trained or tested. scenes for Robot LearningRobot learningUsing data and algorithms to help robots improve behavior instead of only relying on hand-written rules.—you feed in a video of a real Core ConceptsTaskThe job the robot is supposed to complete, such as pick-and-place, navigation, or drawer opening. and automatically get a sim Core ConceptsEnvironmentThe external world the robot operates in, including objects, obstacles, people, and surfaces. with realistic physics and the ability to generate variations. Trained policies transfer Modern Robot LearningZero-shotDoing a new task without task-specific training. to real robots with 17-40% success improvement when trained on scene variations, making it practical to scale Core ConceptsPolicyThe rule or model that maps observations or states to actions. Robot LearningTrainingThe process of fitting a model using data or experience. without collecting more real-world data.

THE PROBLEM

This paper focuses on Simulation & Sim-to-RealSimulationA virtual environment where robots can be trained or tested.. This eliminates the need to manually build Simulation & Sim-to-RealSimulationA virtual environment where robots can be trained or tested. scenes for Robot LearningRobot learningUsing data and algorithms to help robots improve behavior instead of only relying on hand-written rules.—you feed in a video of a real Core ConceptsTaskThe job the robot is supposed to complete, such as pick-and-place, navigation, or drawer opening. and automatically get a sim Core ConceptsEnvironmentThe external world the robot operates in, including objects, obstacles, people, and surfaces. with realistic physics and the ability to generate variations. Trained policies transfer Modern Robot LearningZero-shotDoing a new task without task-specific training. to real robots with 17-40% success improvement when trained on scene variations, making it practical to scale Core ConceptsPolicyThe rule or model that maps observations or states to actions. Robot LearningTrainingThe process of fitting a model using data or experience. without collecting more real-world 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 Simulation & Sim-to-RealSimulationA virtual environment where robots can be trained or tested.. Start here because it defines what success means and which assumptions the rest of the method inherits.

2

Core method

This eliminates the need to manually build Simulation & Sim-to-RealSimulationA virtual environment where robots can be trained or tested. scenes for Robot LearningRobot learningUsing data and algorithms to help robots improve behavior instead of only relying on hand-written rules.—you feed in a video of a real Core ConceptsTaskThe job the robot is supposed to complete, such as pick-and-place, navigation, or drawer opening. and automatically get a sim Core ConceptsEnvironmentThe external world the robot operates in, including objects, obstacles, people, and surfaces. with realistic physics and the ability to generate variations. Trained policies transfer Modern Robot LearningZero-shotDoing a new task without task-specific training. to real robots with 17-40% success improvement when trained on scene variations, making it practical to scale Core ConceptsPolicyThe rule or model that maps observations or states to actions. Robot LearningTrainingThe process of fitting a model using data or experience. without collecting more real-world 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.

KEY RESULTS

Main contributionConceptual contribution

This eliminates the need to manually build Simulation & Sim-to-RealSimulationA virtual environment where robots can be trained or tested. scenes for Robot LearningRobot learningUsing data and algorithms to help robots improve behavior instead of only relying on hand-written rules.—you feed in a video of a real Core ConceptsTaskThe job the robot is supposed to complete, such as pick-and-place, navigation, or drawer opening. and automatically get a sim Core ConceptsEnvironmentThe external world the robot operates in, including objects, obstacles, people, and surfaces. with realistic physics and the ability to generate variations. Trained policies transfer Modern Robot LearningZero-shotDoing a new task without task-specific training. to real robots with 17-40% success improvement when trained on scene variations, making it practical to scale Core ConceptsPolicyThe rule or model that maps observations or states to actions. Robot LearningTrainingThe process of fitting a model using data or experience. without collecting more real-world data.

WHY DEVELOPERS SHOULD CARE

This eliminates the need to manually build Simulation & Sim-to-RealSimulationA virtual environment where robots can be trained or tested. scenes for Robot LearningRobot learningUsing data and algorithms to help robots improve behavior instead of only relying on hand-written rules.—you feed in a video of a real Core ConceptsTaskThe job the robot is supposed to complete, such as pick-and-place, navigation, or drawer opening. and automatically get a sim Core ConceptsEnvironmentThe external world the robot operates in, including objects, obstacles, people, and surfaces. with realistic physics and the ability to generate variations. Trained policies transfer Modern Robot LearningZero-shotDoing a new task without task-specific training. to real robots with 17-40% success improvement when trained on scene variations, making it practical to scale Core ConceptsPolicyThe rule or model that maps observations or states to actions. Robot LearningTrainingThe process of fitting a model using data or experience. without collecting more real-world 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 Simulation & Sim-to-RealSimulationA virtual environment where robots can be trained or tested. 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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