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A Decentralized Communication Framework Based on Dual-Level Recurrence for Multiagent Reinforcement Learning

IEEE Transactions on Cognitive and Developmental Systems 2024年第2期16卷 640-649页

作者： Li, Xuesi Li, Jingchen Shi, Haobin Hwang, Kao-Shing Northwestern Polytechnical University School of Computer Science and Engineering Xi'an710129 China National Sun Yat-sen University Department of Electrical Engineering Kaohsiung804 Taiwan

Designing communication channels for multiagent is a feasible method to conduct decentralized learning, especially in partially observable environments or large-scale multiagent systems. In this work, a communication model with dual-level recurrence is developed to provide a more efficient communication mechanism for the multiagent reinforcement learning field. The communications are conducted by a gated-attention-based recurrent network, in which the historical states are taken into account and regarded as the second-level recurrence. We separate communication messages from memories in the recurrent model so that the proposed communication flow can adapt changeable communication objects in the case of limited communication, and the communication results are fair to every agent. We provide a sufficient discussion about our method in both partially observable and fully observable environments. The results of several experiments suggest our method outperforms the existing decentralized communication frameworks and the corresponding centralized training method. © 2016 IEEE.

关键词： Decision making

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Cross-Camera Multi-Target Identity Association Based on Graph Neural Networks 6

Cross-Camera Multi-Target Identity Association Based on Grap...

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6th International Conference on Communications, Information System and computer engineering, CISCE 2024

作者： Zhang, Yujie Zhang, Yanfei School of Electrical and Control Engineering Shaanxi University of Science and Technology Xi'an China

ISBN: (纸本)9798350353174

The current cross-camera multi-person identity association method is limited to pairwise association between cameras, lacking multi-view collaborative processing, which restricts its application in complex surveillance networks. To address these limitations, this paper proposes a cross-camera multi-target association method based on graph neural networks. It constructs a global graph structure integrating views from all cameras, extracts personnel features using a ResNet-50 network, and updates graph information through message passing and aggregation. Connectivity component constraints are introduced to optimize the graph structure and achieve accurate personnel identity association. The model is trained on the EPFL pedestrian dataset and compared with recent multi-objective association methods. The results show that the method proposed in this paper, with its ARI, AMI, and V-measure, outperforms typical methods such as Geometric, and its performance is substantially improved. © 2024 IEEE.

关键词： Graph neural networks

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Equalizer Zero-Determinant Strategy in Discounted Repeated Stackelberg Asymmetric Game

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Journal of Systems science & Complexity 2024年第1期37卷 184-203页

作者： CHENG Zhaoyang CHEN Guanpu HONG Yiguang Key Laboratory of Systems and Control Academy of Mathematics and Systems ScienceChinese Academy of SciencesBeijing 100190China School of Mathematical Sciences University of Chinese Academy of SciencesBeijing 100049China School of Electrical Engineering and Computer Science KTH Royal Institute of Technology10044 StockholmSweden. Department of Control Science and Engineering Tongji UniversityShanghai 201804China Shanghai Research Institute for Intelligent Autonomous Systems Tongji UniversityShanghai 210201China

This paper focuses on the performance of equalizer zero-determinant(ZD)strategies in discounted repeated Stackelberg asymmetric *** the leader-follower adversarial scenario,the strong Stackelberg equilibrium(SSE)deriving from the opponents’best response(BR),is technically the optimal strategy for the ***,computing an SSE strategy may be difficult since it needs to solve a mixed-integer program and has exponential complexity in the number of *** this end,the authors propose an equalizer ZD strategy,which can unilaterally restrict the opponent’s expected *** authors first study the existence of an equalizer ZD strategy with one-to-one situations,and analyze an upper bound of its performance with the baseline SSE *** the authors turn to multi-player models,where there exists one player adopting an equalizer ZD *** authors give bounds of the weighted sum of opponents’s utilities,and compare it with the SSE ***,the authors give simulations on unmanned aerial vehicles(UAVs)and the moving target defense(MTD)to verify the effectiveness of the proposed approach.

关键词： Discounted repeated Stackelberg asymmetric game equalizer zero-determinant strategy strong Stackelberg equilibrium strategy

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A Random Fusion of Mix 3D and Polar Mix to Improve Semantic Segmentation Performance in 3D Lidar Point Cloud

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computer Modeling in engineering & sciences 2024年第7期140卷 845-862页

作者： Bo Liu Li Feng Yufeng Chen School of Computer Science and Engineering Macao University of Science and TechnologyMacao999078China School of Computer Science and Artificial Intelligence Chaohu UniversityChaohu238000China Institute of Vehicle Information Control and Network Technology Hubei University of Automotive TechnologyShiyan442002China

This paper focuses on the effective utilization of data augmentation techniques for 3Dlidar point clouds to enhance the performance of neural network *** point clouds,which represent spatial information through a collection of 3D coordinates,have found wide-ranging *** augmentation has emerged as a potent solution to the challenges posed by limited labeled data and the need to enhance model generalization *** of the existing research is devoted to crafting novel data augmentation methods specifically for 3D lidar point ***,there has been a lack of focus on making the most of the numerous existing augmentation *** this deficiency,this research investigates the possibility of combining two fundamental data augmentation *** paper introduces PolarMix andMix3D,two commonly employed augmentation techniques,and presents a new approach,named *** of using a fixed or predetermined combination of augmentation methods,RandomFusion randomly chooses one method from a pool of options for each instance or *** innovative data augmentation technique randomly augments each point in the point cloud with either PolarMix or *** crux of this strategy is the random choice between PolarMix and Mix3Dfor the augmentation of each point within the point cloud data *** results of the experiments conducted validate the efficacy of the RandomFusion strategy in enhancing the performance of neural network models for 3D lidar point cloud semantic segmentation *** is achieved without compromising computational *** examining the potential of merging different augmentation techniques,the research contributes significantly to a more comprehensive understanding of how to utilize existing augmentation methods for 3D lidar point *** data augmentation technique offers a simple yet effective method to leverage the diversity of augmentation techniques and boost the ro

关键词： 3D lidar point cloud data augmentation RandomFusion semantic segmentation

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Multi-View 3D Reconstruction Algorithm Based on SAM Plane Prior 13

Multi-View 3D Reconstruction Algorithm Based on SAM Plane Pr...

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13th International Conference on control, Automation and Information sciences, ICCAIS 2024

作者： Liu, Weifeng Wang, Jiangting Ma, Boyang School of Electrical and Control Engineering Shaanxi University of Science and Technology Xi'an China

ISBN: (纸本)9798331542047

Traditional multi-view stereo matching (MVS) algorithms often encounter mismatch problems when dealing with weak texture areas, and relying solely on photometric consis-tency and geometric consistency constraints cannot guarantee accurate depth estimation. To address the mismatch problem in weak texture areas, this paper introduces a SAM (Segment Anything Model) instance segmentation model, which uses the SAM model to perform instance segmentation on weak texture areas to generate plane prior information, and then further incorporates the segmented prior information into the matching cost to assist depth estimation. In addition, an adaptive depth propagation method that combines SAM instance segmentation with local consistency is proposed. This method uses the SAM instance segmentation results to guide the propagation of depth information, effectively improving the accuracy and robustness of depth estimation. Through comparative experiments with the current mainstream multi-view 3D reconstruction algorithms, the results show that the method that combines SAM segmentation prior information has significant advantages in depth estimation and point cloud reconstruction. Finally, the algorithm is tested on a large-scale aerial photography dataset of oil pipelines, and the reconstructed 3D map of the real terrain has high integrity and accuracy. © 2024 IEEE.

关键词： Aerial photography

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On the chronological understanding of the homogeneous dielectric barrier discharge

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High Voltage 2023年第6期8卷 1132-1150页

作者： Xinpei Lu Zhi Fang Dong Dai Tao Shao Feng Liu Cheng Zhang Dawei Liu Lanlan Nie Chunqi Jiang State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhanChina College of Electrical Engineering and Control Science Nanjing Tech TechnologyNanjingChina School of Electric Power South China University of TechnologyGuangzhouChina Institute of Electrical Engineering Chinese Academy of SciencesBeijingChina Frank Reidy Research Center for Bioelectrics Old Dominion UniversityNorfolkVirginiaUSA Department of Electrical and Computer Engineering Old Dominion UniversityNorfolkVirginiaUSA

Dielectric barrier discharges(DBD)are widely utilised non‐equilibrium atmospheric pressure plasmas with a diverse range of applications,such as material processing,surface treatment,light sources,pollution control,and *** the course of several decades,extensive research has been dedicated to the generation of homogeneous DBD(H‐DBD),focussing on understanding the transition from H‐DBD to filamentary DBD and exploring strategies to create and sustain H‐*** paper first discusses the in-fluence of various parameters on DBD,including gas flow,dielectric material,surface conductivity,and mesh ***,a chronological literature review is presented,highlighting the development of H‐DBD and the associated understanding of its un-derlying *** encompasses the generation of H‐DBD in helium,nitrogen,and ***,the paper provides a brief overview of multiple‐current‐pulse(MCP)behaviours in H‐*** objective of this article is to provide a chronological un-derstanding of homogeneous dielectric barrier discharge(DBD).This understanding will aid in the design of new experiments aimed at better comprehending the mechanisms behind H‐DBD generation and ultimately assist in achieving large‐volume H‐DBD in an air environment.

关键词： dielectric barrier pollution

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A Keyword Extraction Method Integrating Word Semantic Similarity and Topic Model 13

A Keyword Extraction Method Integrating Word Semantic Simila...

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13th International Conference on control, Automation and Information sciences, ICCAIS 2024

作者： Liu, Weifeng Li, Wanyu Ma, Liwen School of Electrical and Control Engineering Shaanxi University of Science and Technology Xi'an China

ISBN: (纸本)9798331542047

The existing unsupervised random walk keyphrase extraction model mainly relies on the global structural information of the word graph. It ignores the external structure and topic information of the document. To address this problem, this paper proposes a keyphrase extraction method that integrates word sense similarity and document implicit topic information. First, the latent Dirichlet allocation (LDA) topic model is used to calculate the implicit topic distribution in the document. It can quantify the preference of each word for different topics in the document. The random jump probability in the graph is converted into the importance of the word on the implicit topic. Secondly, the word sense similarity is introduced to reset the influence between different words. The importance weights of the words in the original word graph are converted into non-uniform transfer. Finally, the candidate keyword weights are calculated through iteration. The selected keywords are expanded into valid keyphrases based on the grammar. The TopN candi-date keyphrases with higher importance scores are selected as document keyphrases. The improved algorithm performs better than TextRank and SingleRank. The Fl-Scores are improved by 8.51 % and 4.92 % respectively. Experimental results show that this method can make full use of document topic information and word sense similarity. It makes the automatic keyphrase extraction effect more significant. © 2024 IEEE.

关键词： Keyphrase extraction Text processing TextRank Topic Model Word Semantic Similarity

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Unleashing the Potential of Beamspace Modulation in Near-Field MIMO: Opportunities and Challenges 2

Unleashing the Potential of Beamspace Modulation in Near-Fie...

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2nd IEEE International Conference on Signal, Information and Data Processing, ICSIDP 2024

作者： Guo, Shuaishuai Qu, Kaiqian Dang, Shuping Shandong University School of Control Science and Engineering China University of Bristol School of Electrical Electronic and Mechanical Engineering United Kingdom

ISBN: (纸本)9798331515669

The principal distinction in transitioning from far-field multiple-input multiple-output (MIMO) systems to near-field MIMO configurations lies in the notable augmentation of spatial degrees of freedom (DoF). This increase is not static;rather, it dynamically fluctuates in response to user mobility. A critical challenge emerges in effectively leveraging this significantly enhanced and continuously evolving spatial DoF, particularly when constrained by a limited and energy-intensive array of radio frequency (RF) chains. This article presents an exhaustive review of the current methodologies for exploring spatial DoF in MIMO systems, with a particular emphasis on the near-field context. Central to this review is the exploration of beamspace modulation, a technique that ingeniously capitalizes on the increased and dynamic spatial DoFs inherent in near-field MIMO systems. This strategic exploitation is demonstrated to yield significant enhancements in both spectral efficiency and system reliability. Furthermore, the article delves into a detailed analysis of the multifaceted challenges associated with implementing this technology. Through this comprehensive evaluation, the work provides crucial insights into ongoing efforts to navigate these challenges and suggests potential pathways for future research in this rapidly evolving field. © 2024 IEEE.

关键词： Reliability analysis

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Experimental study on effects of gas flow rate on soot characteristics in diffusion flames coupled with plasma

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science China(Technological sciences) 2024年第2期67卷 475-485页

作者： QI DanDan CHEN MingXiao TU Xin LIU Dong MIIT Key Laboratory of Thermal Control of Electronic Equipment School of Energy and Power EngineeringNanjing University of Science and TechnologyNanjing 210094China Advanced Combustion Laboratory School of Energy and Power EngineeringNanjing University of Science and TechnologyNanjing 210094China Department of Electrical Engineering and Electronics University of LiverpoolLiverpool L693GJUK

This study examined the evolution of morphology and nanostructure of soot particles from the plasma-flame interaction for various gas flow *** current study used both optical diagnostic and sampling methods to explore the soot production and combustion *** particles were characterized at the same positions downstream from the flame zone by thermophoretic sampling and transmission electron ***,X-ray diffraction analysis,and thermogravimetric analysis were performed to study the nanostructure and oxidation reactivity of soot.A reduction in soot concentration was found with the plasma addition,which illustrated an inhibition effect of plasma on soot *** increased gas flow rate promoted soot concentration since a growing number of carbons participated in the combustion *** on the gas flow rate(carbon content)variation and plasma activation,either liquid-like soot material with irregularly shaped protrusions or chain-like structure,or a mixture of both,were generated from the diffusion *** soot produced by plasma-flame interaction also demonstrated a high correlation between nanostructure and *** soot from lower carbon content with plasma activation had a shorter fringe length and larger fringe tortuosity related to higher oxidation *** the contrary,soot from the highest carbon content without plasma-flame interaction exhibited prevalent fullerene-like nanostructures with evident large or small shells and also had a higher carbonization degree resulting in lower oxidation reactivity.

关键词： soot characteristics gas flow rate plasma diffusion flames

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Parasitic Patch Antenna with Beam Switching for 5G Millimeter-Wave Frequencies 10

Parasitic Patch Antenna with Beam Switching for 5G Millimete...

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10th International Conference on engineering and Emerging Technologies, ICEET 2024

作者： Nurgali, Raiymbek Ahmad, Jawad Hashmi, Mohammad School of Engineering and Digital Science Nazarbayev University Department of Electrical and Computer Engineering Astana Kazakhstan

ISBN: (纸本)9798331532895

This paper presents a novel millimeter-wave (mmWave) antenna design for 5G applications, featuring a parasitic elliptical patch antenna with beam-switching capabilities and coaxial feeding. The antenna was initially designed as a single-element patch antenna for the 28 GHz mmWave band, demonstrating favorable impedance matching and broadside radiation patterns. Circular parasitic patches with and without vias were strategically placed around the main radiator to enhance the radiation pattern and gain. The single-element design achieved an impedance bandwidth of 2.7 GHz (26.8-29.5 GHz) and a gain of 7.5 dBi at 28 GHz. The optimized parasitic structure, consisting of carefully positioned open and short circular patches, significantly improved the antenna's performance. The parasitic design exhibited an enhanced return loss of -30.5 dB, indicating excellent impedance matching, and a gain of approximately 8 dBi. The proposed antenna exhibits enhanced performance characteristics in terms of gain, return loss, and beam steering capabilities, and it is suitable for next-generation wireless communication systems. © 2024 IEEE.

关键词： Slot antennas

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