Niklas Funk
Niklas Funk
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Placing by Touching: An empirical study on the importance of tactile sensing for precise object placing
We propose to exploit in-hand tactile sensors for learning stable object placing on flat surfaces starting from unknown initial poses. Common approaches for object placing either require complete scene specifications or indirect sensor measurements, such as cameras which are prone to suffer from occlusions. Instead, this work proposes a novel approach for stable object placing that combines tactile feedback and proprioceptive sensing. Our experimental evaluation of the placing policies with a set of unknown everyday objects reveals an impressive generalization of the tactile-based pipeline and suggests that tactile sensing plays a vital role in the intrinsic understanding of dexterous object manipulation.
Luca Lach
,
Niklas Funk
,
Robert Haschke
,
Severin Lemaignan
,
Helge Joachim Ritter
,
Jan Peters
,
Georgia Chalvatzaki
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SE(3)-DiffusionFields: Learning smooth cost functions for joint grasp and motion optimization through diffusion
We propose learning task-space, data-driven cost functions as diffusion models. Diffusion models represent expressive multimodal distributions and exhibit proper gradients over the entire space. We exploit these properties for motion optimization by integrating the learned cost functions with other costs in a single objective function, and optimize all of them jointly by gradient descent.
Julen Urain
,
Niklas Funk
,
Jan Peters
,
Georgia Chalvatzaki
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Graph-based Reinforcement Learning meets Mixed Integer Programs: An application to 3D robot assembly discovery
We propose a novel hybrid method for Robot Assembly discovery that is based on a combination of Mixed Integer Programming and a graph-based reinforcement learning agent.
Niklas Funk
,
Svenja Menzenbach
,
Georgia Chalvatzaki
,
Jan Peters
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Learn2Assemble with structured representations and search for robotic architectural construction
We propose a novel method for learning to assemble arbitrary structures from scratch. The transformer-like graph-based neural network jointly decides which blocks to use and how to assemble the structure with the robot-in-the-loop.
Niklas Funk
,
Georgia Chalvatzaki
,
Boris Belousov
,
Jan Peters
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Benchmarking Structured Policies and Policy Optimization for Real-World Dexterous Object Manipulation
We present a benchmark of structured policies for real-world dexterous manipulation. Our proposed approaches combine elements of classical robotics and modern policy optimization. This inclusion of inductive biases facilitates sample efficiency, interpretability, reliability and high performance.
Niklas Funk
,
Charles Schaff
,
Rishabh Madan
,
Takuma Yoneda
,
Julen Urain
,
Joe Watson
,
Ethan K. Gordon
,
Felix Widmaier
,
Stefan Bauer
,
Siddhartha S. Srinivasa
,
Tapomayukh Bhattacharjee
,
Matthew R. Walter
,
Jan Peters
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