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<article xsi:noNamespaceSchemaLocation="http://jats.nlm.nih.gov/publishing/1.1/xsd/JATS-journalpublishing1-mathml3.xsd" dtd-version="1.1" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><front><journal-meta><journal-id journal-id-type="publisher-id">JERA</journal-id><journal-title-group><journal-title>Journal of Electronic Research and Application</journal-title></journal-title-group><issn>2208-3502</issn><eissn>2208-3510</eissn><publisher><publisher-name>Bio-Byword Scientific Publishing Pty. Ltd.</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.26689/jera.v5i6.2809</article-id><article-categories><subj-group subj-group-type="heading"><subject>Article</subject></subj-group></article-categories><title>Applications and Challenges of Deep Reinforcement Learning in Multi-robot Path Planning</title><url>https://artdesignp.com/journal/JERA/5/6/10.26689/jera.v5i6.2809</url><author>QiuTianyun,ChengYaxuan</author><pub-date pub-type="publication-year"><year>2021</year></pub-date><volume>5</volume><issue>6</issue><history><date date-type="pub"><published-time>2021-11-30</published-time></date></history><abstract>With the rapid advancement of deep reinforcement learning (DRL) in multi-agent systems, a variety of practical application challenges and solutions in the direction of multi-agent deep reinforcement learning (MADRL) are surfacing. Path planning in a collision-free environment is essential for many robots to do tasks quickly and efficiently, and path planning for multiple robots using deep reinforcement learning is a new research area in the field of robotics and artificial intelligence. In this paper, we sort out the training methods for multi-robot path planning, as well as summarize the practical applications in the field of DRL-based multi-robot path planning based on the methods; finally, we suggest possible research directions for researchers.</abstract><keywords/></article-meta></front><body/><back><ref-list><ref id="B1" content-type="article"><label>1</label><element-citation publication-type="journal"><p>Lin J, Yang X, Zheng P, et al., 2019, End-To-End Decentralized Multi-Robot Navigation in Unknown Complex Environments Via Deep Reinforcement Learning 2019, IEEE International Conference on Mechatronics and Automation (ICMA). IEEE, 2493-2500.</p><pub-id pub-id-type="doi"/></element-citation></ref><ref id="B2" content-type="article"><label>2</label><element-citation publication-type="journal"><p>Qie H, Shi D, Shen T, et al., 2019, Joint Optimization of Multi-UAV Target Assignment and Path Planning based on Multi-Agent Reinforcement Learning. IEEE access, 7: 146264-146272.</p><pub-id pub-id-type="doi"/></element-citation></ref><ref id="B3" content-type="article"><label>3</label><element-citation publication-type="journal"><p>Li B, Wu Y, 2020, Path Planning for UAV Ground Target Tracking Via Deep Reinforcement Learning. IEEE Access, 8: 29064-29074.</p><pub-id pub-id-type="doi"/></element-citation></ref><ref id="B4" content-type="article"><label>4</label><element-citation publication-type="journal"><p>Wu D, Wan K, Gao X, et al., 2021, Multiagent Motion Planning Based on Deep Reinforcement Learning in Complex Environments 2021, 6th International Conference on Control and Robotics Engineering (ICCRE). IEEE, 123-128.</p><pub-id pub-id-type="doi"/></element-citation></ref><ref id="B5" content-type="article"><label>5</label><element-citation publication-type="journal"><p>Cruz DL, Yu W, 2017, Path Planning of Multi-Agent Systems in Unknown Environment with Neural Kernel Smoothing and Reinforcement Learning. Neurocomputing, 233: 34-42.</p><pub-id pub-id-type="doi"/></element-citation></ref><ref id="B6" content-type="article"><label>6</label><element-citation publication-type="journal"><p>Xin J, Zhao H, Liu D, et al., 2017, Application of Deep Reinforcement Learning in Mobile Robot Path Planning 2017, Chinese Automation Congress (CAC). IEEE, 7112-7116.</p><pub-id pub-id-type="doi"/></element-citation></ref><ref id="B7" content-type="article"><label>7</label><element-citation publication-type="journal"><p>Yang Y, Juntao L, Lingling P, 2020, Multi-Robot Path Planning based on a Deep Reinforcement Learning DQN Algorithm. CAAI Transactions on Intelligence Technology, 5(3): 177-183.</p><pub-id pub-id-type="doi"/></element-citation></ref><ref id="B8" content-type="article"><label>8</label><element-citation publication-type="journal"><p>Liu Z, Chen B, Zhou H, et al., 2020, Mapper: Multi-Agent Path Planning with Evolutionary Reinforcement Learning in Mixed Dynamic Environments 2020 IEEE, RSJ International Conference on Agent Robots and Systems (IROS). IEEE, 11748-11754.</p><pub-id pub-id-type="doi"/></element-citation></ref><ref id="B9" content-type="article"><label>9</label><element-citation publication-type="journal"><p>Wang D, Deng H, 2021, Multirobot Coordination with Deep Reinforcement Learning in Complex Environments. Expert Systems with Applications, 180: 115128.</p><pub-id pub-id-type="doi"/></element-citation></ref><ref id="B10" content-type="article"><label>10</label><element-citation publication-type="journal"><p>Sartoretti G, Kerr J, Shi Y, et al., 2019, Primal: Pathfinding Via Reinforcement and Imitation Multi-Agent Learning. IEEE Robotics and Automation Letters, 4(3): 2378-2385.</p><pub-id pub-id-type="doi"/></element-citation></ref><ref id="B11" content-type="article"><label>11</label><element-citation publication-type="journal"><p>Damani M, Luo Z, Wenzel E, et al., 2021, PRIMAL $ _2 $: Pathfinding Via Reinforcement and Imitation Multi-Agent Learning-Lifelong. IEEE Robotics and Automation Letters, 6(2): 2666-2673.</p><pub-id pub-id-type="doi"/></element-citation></ref></ref-list></back></article>
