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  • Open Access

    ARTICLE

    FedCCM: Communication-Efficient Federated Learning via Clustered Client Momentum in Non-IID Settings

    Hang Wen1,2, Kai Zeng1,2,*

    CMC-Computers, Materials & Continua, Vol.86, No.3, 2026, DOI:10.32604/cmc.2025.072909 - 12 January 2026

    Abstract Federated learning often experiences slow and unstable convergence due to edge-side data heterogeneity. This problem becomes more severe when edge participation rate is low, as the information collected from different edge devices varies significantly. As a result, communication overhead increases, which further slows down the convergence process. To address this challenge, we propose a simple yet effective federated learning framework that improves consistency among edge devices. The core idea is clusters the lookahead gradients collected from edge devices on the cloud server to obtain personalized momentum for steering local updates. In parallel, a global momentum… More > Graphic Abstract

    FedCCM: Communication-Efficient Federated Learning via Clustered Client Momentum in Non-IID Settings

  • Open Access

    ARTICLE

    Advanced Video Processing and Data Transmission Technology for Unmanned Ground Vehicles in the Internet of Battlefield Things (loBT)

    Tai Liu1,2, Mao Ye2,*, Feng Wu3, Chao Zhu2, Bo Chen2, Guoyan Zhang1,*

    CMC-Computers, Materials & Continua, Vol.86, No.3, 2026, DOI:10.32604/cmc.2025.072692 - 12 January 2026

    Abstract With the continuous advancement of unmanned technology in various application domains, the development and deployment of blind-spot-free panoramic video systems have gained increasing importance. Such systems are particularly critical in battlefield environments, where advanced panoramic video processing and wireless communication technologies are essential to enable remote control and autonomous operation of unmanned ground vehicles (UGVs). However, conventional video surveillance systems suffer from several limitations, including limited field of view, high processing latency, low reliability, excessive resource consumption, and significant transmission delays. These shortcomings impede the widespread adoption of UGVs in battlefield settings. To overcome these… More >

  • Open Access

    ARTICLE

    FAIR-DQL: Fairness-Aware Deep Q-Learning for Enhanced Resource Allocation and RIS Optimization in High-Altitude Platform Networks

    Muhammad Ejaz1, Muhammad Asim2,*, Mudasir Ahmad Wani2,3, Kashish Ara Shakil4,*

    CMC-Computers, Materials & Continua, Vol.86, No.3, 2026, DOI:10.32604/cmc.2025.072464 - 12 January 2026

    Abstract The integration of High-Altitude Platform Stations (HAPS) with Reconfigurable Intelligent Surfaces (RIS) represents a critical advancement for next-generation wireless networks, offering unprecedented opportunities for ubiquitous connectivity. However, existing research reveals significant gaps in dynamic resource allocation, joint optimization, and equitable service provisioning under varying channel conditions, limiting practical deployment of these technologies. This paper addresses these challenges by proposing a novel Fairness-Aware Deep Q-Learning (FAIR-DQL) framework for joint resource management and phase configuration in HAPS-RIS systems. Our methodology employs a comprehensive three-tier algorithmic architecture integrating adaptive power control, priority-based user scheduling, and dynamic learning mechanisms. More >

  • Open Access

    ARTICLE

    Industrial EdgeSign: NAS-Optimized Real-Time Hand Gesture Recognition for Operator Communication in Smart Factories

    Meixi Chu1, Xinyu Jiang1,*, Yushu Tao2

    CMC-Computers, Materials & Continua, Vol.86, No.2, pp. 1-23, 2026, DOI:10.32604/cmc.2025.071533 - 09 December 2025

    Abstract Industrial operators need reliable communication in high-noise, safety-critical environments where speech or touch input is often impractical. Existing gesture systems either miss real-time deadlines on resource-constrained hardware or lose accuracy under occlusion, vibration, and lighting changes. We introduce Industrial EdgeSign, a dual-path framework that combines hardware-aware neural architecture search (NAS) with large multimodal model (LMM) guided semantics to deliver robust, low-latency gesture recognition on edge devices. The searched model uses a truncated ResNet50 front end, a dimensional-reduction network that preserves spatiotemporal structure for tubelet-based attention, and localized Transformer layers tuned for on-device inference. To reduce… More >

  • Open Access

    ARTICLE

    Research on Vehicle Joint Radar Communication Resource Optimization Method Based on GNN-DRL

    Zeyu Chen1, Jian Sun2,*, Zhengda Huan1, Ziyi Zhang1

    CMC-Computers, Materials & Continua, Vol.86, No.2, pp. 1-17, 2026, DOI:10.32604/cmc.2025.071182 - 09 December 2025

    Abstract To address the issues of poor adaptability in resource allocation and low multi-agent cooperation efficiency in Joint Radar and Communication (JRC) systems under dynamic environments, an intelligent optimization framework integrating Deep Reinforcement Learning (DRL) and Graph Neural Network (GNN) is proposed. This framework models resource allocation as a Partially Observable Markov Game (POMG), designs a weighted reward function to balance radar and communication efficiencies, adopts the Multi-Agent Proximal Policy Optimization (MAPPO) framework, and integrates Graph Convolutional Networks (GCN) and Graph Sample and Aggregate (GraphSAGE) to optimize information interaction. Simulations show that, compared with traditional methods More >

  • Open Access

    ARTICLE

    Artificial Intelligence (AI)-Enabled Unmanned Aerial Vehicle (UAV) Systems for Optimizing User Connectivity in Sixth-Generation (6G) Ubiquitous Networks

    Zeeshan Ali Haider1, Inam Ullah2,*, Ahmad Abu Shareha3, Rashid Nasimov4, Sufyan Ali Memon5,*

    CMC-Computers, Materials & Continua, Vol.86, No.1, pp. 1-16, 2026, DOI:10.32604/cmc.2025.071042 - 10 November 2025

    Abstract The advent of sixth-generation (6G) networks introduces unprecedented challenges in achieving seamless connectivity, ultra-low latency, and efficient resource management in highly dynamic environments. Although fifth-generation (5G) networks transformed mobile broadband and machine-type communications at massive scales, their properties of scaling, interference management, and latency remain a limitation in dense high mobility settings. To overcome these limitations, artificial intelligence (AI) and unmanned aerial vehicles (UAVs) have emerged as potential solutions to develop versatile, dynamic, and energy-efficient communication systems. The study proposes an AI-based UAV architecture that utilizes cooperative reinforcement learning (CoRL) to manage an autonomous network.… More >

  • Open Access

    ARTICLE

    An Improved Reinforcement Learning-Based 6G UAV Communication for Smart Cities

    Vi Hoai Nam1, Chu Thi Minh Hue2, Dang Van Anh1,*

    CMC-Computers, Materials & Continua, Vol.86, No.1, pp. 1-15, 2026, DOI:10.32604/cmc.2025.070605 - 10 November 2025

    Abstract Unmanned Aerial Vehicles (UAVs) have become integral components in smart city infrastructures, supporting applications such as emergency response, surveillance, and data collection. However, the high mobility and dynamic topology of Flying Ad Hoc Networks (FANETs) present significant challenges for maintaining reliable, low-latency communication. Conventional geographic routing protocols often struggle in situations where link quality varies and mobility patterns are unpredictable. To overcome these limitations, this paper proposes an improved routing protocol based on reinforcement learning. This new approach integrates Q-learning with mechanisms that are both link-aware and mobility-aware. The proposed method optimizes the selection of… More >

  • Open Access

    ARTICLE

    An Optimal Right-Turn Coordination System for Connected and Automated Vehicles at Urban Intersections

    Mahmudul Hasan1, Shuji Doman1, A. S. M. Bakibillah2, Md Abdus Samad Kamal1,*, Kou Yamada1

    CMC-Computers, Materials & Continua, Vol.86, No.1, pp. 1-17, 2026, DOI:10.32604/cmc.2025.070222 - 10 November 2025

    Abstract Traffic at urban intersections frequently encounters unexpected obstructions, resulting in congestion due to uncooperative and priority-based driving behavior. This paper presents an optimal right-turn coordination system for Connected and Automated Vehicles (CAVs) at single-lane intersections, particularly in the context of left-hand side driving on roads. The goal is to facilitate smooth right turns for certain vehicles without creating bottlenecks. We consider that all approaching vehicles share relevant information through vehicular communications. The Intersection Coordination Unit (ICU) processes this information and communicates the optimal crossing or turning times to the vehicles. The primary objective of this… More >

  • Open Access

    ARTICLE

    DRL-Based Cross-Regional Computation Offloading Algorithm

    Lincong Zhang1, Yuqing Liu1, Kefeng Wei2, Weinan Zhao1, Bo Qian1,*

    CMC-Computers, Materials & Continua, Vol.86, No.1, pp. 1-18, 2026, DOI:10.32604/cmc.2025.069108 - 10 November 2025

    Abstract In the field of edge computing, achieving low-latency computational task offloading with limited resources is a critical research challenge, particularly in resource-constrained and latency-sensitive vehicular network environments where rapid response is mandatory for safety-critical applications. In scenarios where edge servers are sparsely deployed, the lack of coordination and information sharing often leads to load imbalance, thereby increasing system latency. Furthermore, in regions without edge server coverage, tasks must be processed locally, which further exacerbates latency issues. To address these challenges, we propose a novel and efficient Deep Reinforcement Learning (DRL)-based approach aimed at minimizing average… More >

  • Open Access

    ARTICLE

    National Common Language Proficiency (NCLP) and social adaptation among high school students: The chain mediating role of prosocial tendency and language communication strategies

    Baobao Dang1,*, Wenjing Li1, Haiyan Zhao2, Shifeng Li3

    Journal of Psychology in Africa, Vol.35, No.6, pp. 749-759, 2025, DOI:10.32604/jpa.2025.071932 - 30 December 2025

    Abstract This study investigated the relationship between NCLP and social adaptation among high school students, as mediated by prosocial tendency and language communication strategies. The sample comprised 547 Tibetan high school students aged 15–18 years (female = 69.5%, mean age = 16.67 years, SD = 0.95) from the Gannan Tibetan Autonomous Prefecture, China. They completed questionnaires surveys on NCLP, social adaptation, prosocial tendency, and language communication strategies. The mediation analysis results indicated that NCLP significantly predicted social adaptation. Prosocial tendency and language communication strategies independently and significantly mediated the relationship between NCLP and social adaptation. Prosocial tendency More >

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