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arXiv 2004.04618cs.LGeess.SPstat.ML
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深度强化学习(DRL):无监督无线定位的另一种视角

Deep Reinforcement Learning (DRL): Another Perspective for Unsupervised Wireless Localization

You Li, Xin Hu, Yuan Zhuang, Zhouzheng Gao, Peng Zhang, Naser El-Sheimy

摘要:

位置是空间化物联网(IoT)数据的关键。然而,使用低成本IoT设备进行鲁棒的无监督定位(即,没有具有已知位置标签的训练数据的定位)。因此,本文提出了一种基于深度强化学习(DRL)的无监督无线定位方法。主要贡献如下。(1)本文提出了一种方法来模拟一个连续的无线定位过程的马尔可夫决策过程(MDP),并在DRL框架内处理它。(2)为了减轻在使用未标记数据时获得奖励的挑战(例如,日常生活中的众包数据),本文提出了一种奖励设置机制,该机制从未标记的无线接收信号强度(RSS)中提取鲁棒的地标数据。(3)为了减轻使用DRL进行本地化时对模型重新训练的要求,本文使用RSS测量与代理位置一起构建DRL输入。该方法是通过使用多个蓝牙5智能耳标在牧场的现场测试数据进行测试。同时,实验验证过程也反映了DRL在无线定位中的优势和挑战。

英文摘要:

Location is key to spatialize internet-of-things (IoT) data. However, it is challenging to use low-cost IoT devices for robust unsupervised localization (i.e., localization without training data that have known location labels). Thus, this paper proposes a deep reinforcement learning (DRL) based unsupervised wireless-localization method. The main contributions are as follows. (1) This paper proposes an approach to model a continuous wireless-localization process as a Markov decision process (MDP) and process it within a DRL framework. (2) To alleviate the challenge of obtaining rewards when using unlabeled data (e.g., daily-life crowdsourced data), this paper presents a reward-setting mechanism, which extracts robust landmark data from unlabeled wireless received signal strengths (RSS). (3) To ease requirements for model re-training when using DRL for localization, this paper uses RSS measurements together with agent location to construct DRL inputs. The proposed method was tested by using field testing data from multiple Bluetooth 5 smart ear tags in a pasture. Meanwhile, the experimental verification process reflected the advantages and challenges for using DRL in wireless localization.

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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