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arXiv 2209.09646cs.RO
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Active Particle Filter Networks:连续动作空间和大地图中的有效主动定位

Active Particle Filter Networks: Efficient Active Localization in Continuous Action Spaces and Large Maps

University of Freiburg(弗莱堡大学)

Daniel Honerkamp, Suresh Guttikonda, Abhinav Valada

摘要:

精确定位是大多数机器人任务的关键要求。现有的工作的主体集中在被动定位,其中的机器人的运动被假定给定的,抽象的采样信息的意见,从他们的影响。虽然最近的工作已经显示出学习运动以消除机器人姿势的歧义的好处,但这些方法仅限于颗粒离散动作,并且直接取决于全局地图的大小。我们提出了主动粒子滤波网络(APFN),这种方法只依赖于本地信息的可能性评估以及决策。为此,我们将可微粒子滤波器与强化学习代理相结合,该代理负责地图中最相关的部分。由此产生的方法继承了粒子滤波器的计算优势,可以直接作用于连续的动作空间,同时保持完全可微,从而端到端的优化以及对输入模态不可知。我们展示了我们的方法的好处,在逼真的室内环境中建立从现实世界的3D扫描公寓广泛的实验。视频和代码可在http://apfn.cs.uni-freiburg.de上获得。

英文摘要:

Accurate localization is a critical requirement for most robotic tasks. The main body of existing work is focused on passive localization in which the motions of the robot are assumed given, abstracting from their influence on sampling informative observations. While recent work has shown the benefits of learning motions to disambiguate the robot's poses, these methods are restricted to granular discrete actions and directly depend on the size of the global map. We propose Active Particle Filter Networks (APFN), an approach that only relies on local information for both the likelihood evaluation as well as the decision making. To do so, we couple differentiable particle filters with a reinforcement learning agent that attends to the most relevant parts of the map. The resulting approach inherits the computational benefits of particle filters and can directly act in continuous action spaces while remaining fully differentiable and thereby end-to-end optimizable as well as agnostic to the input modality. We demonstrate the benefits of our approach with extensive experiments in photorealistic indoor environments built from real-world 3D scanned apartments. Videos and code are available at http://apfn.cs.uni-freiburg.de.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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