最近的作品表明，现代机器学习技术可以为长期存在的联合源通道编码（JSCC）问题提供另一种方法。非常有希望的初始结果，优于使用单独的源代码和通道代码的流行数字方案，已被证明用于使用深神经网络（DNNS）的无线图像和视频传输。但是，此类方案的端到端培训需要可区分的通道输入表示。因此，先前的工作假设可以通过通道传输任何复杂值。这可以防止在硬件或协议只能接收数字星座规定的某些频道输入集的情况下应用这些代码。本文中，我们建议使用有限通道输入字母的端到端优化的JSCC解决方案DeepJSCC-Q。我们表明，DEEPJSCC-Q可以实现与允许任何复杂的有价值通道输入的先前作品相似的性能，尤其是在可用的高调制订单时，并且在调制顺序增加的情况下，性能渐近接近无约束通道输入的情况。重要的是，DEEPJSCC-Q保留了不可预测的渠道条件下图像质量的优雅降级，这是在频道迅速变化的移动系统中部署的理想属性。

最近的作品表明，可以通过使用机器学习技术来学习图像的无线传输的任务。已经通过训练了自动化器，非常有前沿图像质量，优于利用源和信道编码分离的流行数字方案，以具有中间的不可培训的沟道层，优于利用源和信道编码分离。然而，这些方法假设可以通过信道传输任何复数，这可以防止硬件或协议只能承认某些信道输入的场景中的算法，例如使用数字星座的使用。这里，我们提出了DeepJSCC-Q，用于无线图像传输的端到端优化的联合源信道编码方案，其能够用固定信道输入字母操作。我们表明DeepJSCC-Q可以对使用连续值通道输入的模型来实现类似的性能。重要的是，在信道条件恶化的情况下，保留在现有工作中观察到的图像质量的正常劣化，使DeepJSCC-Q在实际系统中部署更具吸引力。

State-of-the-art performance for many emerging edge applications is achieved by deep neural networks (DNNs). Often, these DNNs are location and time sensitive, and the parameters of a specific DNN must be delivered from an edge server to the edge device rapidly and efficiently to carry out time-sensitive inference tasks. In this paper, we introduce AirNet, a novel training and transmission method that allows efficient wireless delivery of DNNs under stringent transmit power and latency constraints. We first train the DNN with noise injection to counter the wireless channel noise. Then we employ pruning to reduce the network size to the available channel bandwidth, and perform knowledge distillation from a larger model to achieve satisfactory performance, despite pruning. We show that AirNet achieves significantly higher test accuracy compared to digital alternatives under the same bandwidth and power constraints. The accuracy of the network at the receiver also exhibits graceful degradation with channel quality, which reduces the requirement for accurate channel estimation. We further improve the performance of AirNet by pruning the network below the available bandwidth, and using channel expansion to provide better robustness against channel noise. We also benefit from unequal error protection (UEP) by selectively expanding more important layers of the network. Finally, we develop an ensemble training approach, which trains a whole spectrum of DNNs, each of which can be used at different channel condition, resolving the impractical memory requirements.

车辆到基础设施（V2I）通信中的高效毫米波（MMWAVE）光束选择是由于MMWVEAVE和高用户移动性窄的狭窄但挑战性的任务。为了减少迭代光束发现过程的搜索开销，通过数据驱动的方法利用了从安装在车辆上的光检测和测距（LIDAR）传感器的上下文信息，以产生有用的侧面信息。在本文中，我们提出了一种轻量级神经网络（NN）架构以及相应的LIDAR预处理，这显着优于先前的作品。我们的解决方案包括多个新奇，可提高模型的收敛速度和最终精度。特别是，我们定义了由知识蒸馏理念的启发的新型损失函数，介绍课程训练方法利用视线（LOS）/非视线（NLOS）信息，我们提出非本地注意模块提高了对NLOS案例更具挑战性的性能。基准数据集的仿真结果表明，利用LIDAR数据和接收器位置，我们的NN基光束选择方案可以实现79.9％的遗弃光束扫描方法，无需任何光束搜索开销，通过搜索少至6个梁。在典型的MMWAVE V2I场景中，我们所提出的方法可以显着减少实现所需吞吐量所需的光束搜索时间，与逆指纹和分层光束选择方案相比。

We consider the problem of embedding character-entity relationships from the reduced semantic space of narratives, proposing and evaluating the assumption that these relationships hold under a reflection operation. We analyze this assumption and compare the approach to a baseline state-of-the-art model with a unique evaluation that simulates efficacy on a downstream clustering task with human-created labels. Although our model creates clusters that achieve Silhouette scores of -.084, outperforming the baseline -.227, our analysis reveals that the models approach the task much differently and perform well on very different examples. We conclude that our assumption might be useful for specific types of data and should be evaluated on a wider range of tasks.

Search and rescue, wildfire monitoring, and flood/hurricane impact assessment are mission-critical services for recent IoT networks. Communication synchronization, dependability, and minimal communication jitter are major simulation and system issues for the time-based physics-based ROS simulator, event-based network-based wireless simulator, and complex dynamics of mobile and heterogeneous IoT devices deployed in actual environments. Simulating a heterogeneous multi-robot system before deployment is difficult due to synchronizing physics (robotics) and network simulators. Due to its master-based architecture, most TCP/IP-based synchronization middlewares use ROS1. A real-time ROS2 architecture with masterless packet discovery synchronizes robotics and wireless network simulations. A velocity-aware Transmission Control Protocol (TCP) technique for ground and aerial robots using Data Distribution Service (DDS) publish-subscribe transport minimizes packet loss, synchronization, transmission, and communication jitters. Gazebo and NS-3 simulate and test. Simulator-agnostic middleware. LOS/NLOS and TCP/UDP protocols tested our ROS2-based synchronization middleware for packet loss probability and average latency. A thorough ablation research replaced NS-3 with EMANE, a real-time wireless network simulator, and masterless ROS2 with master-based ROS1. Finally, we tested network synchronization and jitter using one aerial drone (Duckiedrone) and two ground vehicles (TurtleBot3 Burger) on different terrains in masterless (ROS2) and master-enabled (ROS1) clusters. Our middleware shows that a large-scale IoT infrastructure with a diverse set of stationary and robotic devices can achieve low-latency communications (12% and 11% reduction in simulation and real) while meeting mission-critical application reliability (10% and 15% packet loss reduction) and high-fidelity requirements.

Modern speech enhancement (SE) networks typically implement noise suppression through time-frequency masking, latent representation masking, or discriminative signal prediction. In contrast, some recent works explore SE via generative speech synthesis, where the system's output is synthesized by a neural vocoder after an inherently lossy feature-denoising step. In this paper, we propose a denoising vocoder (DeVo) approach, where a vocoder accepts noisy representations and learns to directly synthesize clean speech. We leverage rich representations from self-supervised learning (SSL) speech models to discover relevant features. We conduct a candidate search across 15 potential SSL front-ends and subsequently train our vocoder adversarially with the best SSL configuration. Additionally, we demonstrate a causal version capable of running on streaming audio with 10ms latency and minimal performance degradation. Finally, we conduct both objective evaluations and subjective listening studies to show our system improves objective metrics and outperforms an existing state-of-the-art SE model subjectively.

近年来，机器人技术的最佳控制越来越流行，并且已应用于许多涉及复杂动力系统的应用中。闭环最佳控制策略包括模型预测控制（MPC）和通过ILQR优化的时变线性控制器。但是，此类反馈控制器依赖于当前状态的信息，从而限制了机器人需要记住其在采取行动和相应计划的机器人应用程序范围。最近提出的系统级合成（SLS）框架通过带有内存的较富裕控制器结构来规避此限制。在这项工作中，我们建议通过将SLS扩展到跟踪涉及非线性系统和非二次成本功能的问题，以最佳设计具有记忆力的反应性预期机器人技能。我们以两种情况来展示我们的方法，这些方案利用任务精确度和对象在模拟和真实环境中使用7轴的Franka Emika机器人提供的挑选和位置任务。

大多数人工智能（AI）研究都集中在高收入国家，其中成像数据，IT基础设施和临床专业知识丰富。但是，在需要医学成像的有限资源环境中取得了较慢的进步。例如，在撒哈拉以南非洲，由于获得产前筛查的机会有限，围产期死亡率的率很高。在这些国家，可以实施AI模型，以帮助临床医生获得胎儿超声平面以诊断胎儿异常。到目前为止，已经提出了深度学习模型来识别标准的胎儿平面，但是没有证据表明它们能够概括获得高端超声设备和数据的中心。这项工作研究了不同的策略，以减少在高资源临床中心训练并转移到新的低资源中心的胎儿平面分类模型的域转移效果。为此，首先在丹麦的一个新中心对1,008例患者的新中心进行评估，接受了1,008名患者的新中心，后来对五个非洲中心（埃及，阿尔及利亚，乌干达，加纳和马拉维进行了相同的表现），首先在丹麦的一个新中心进行评估。 ）每个患者有25名。结果表明，转移学习方法可以是将小型非洲样本与发达国家现有的大规模数据库相结合的解决方案。特别是，该模型可以通过将召回率提高到0.92 \ pm 0.04 $，同时又可以维持高精度。该框架显示了在临床中心构建可概括的新AI模型的希望，该模型在具有挑战性和异质条件下获得的数据有限，并呼吁进行进一步的研究，以开发用于资源较少的国家 /地区的AI可用性的新解决方案。

自从几十年前的频谱分析开创性工作以来，已经研究了提取音频和语音特征的方法。最近的努力以开发通用音频表示的雄心为指导。例如，如果深度神经网络在大型音频数据集上进行了培训，则可以提取最佳的嵌入。这项工作扩展了基于自我监督的学习，通过引导，提出各种编码器体系结构，并探索使用不同的预训练数据集的效果。最后，我们提出了一个新颖的培训框架，以提出一个混合音频表示，该框架结合了手工制作和数据驱动的学习音频功能。在HEAR NEURIPS 2021挑战中，对听觉场景分类和时间戳检测任务进行了评估。我们的结果表明，在大多数听到挑战任务中，带有卷积变压器的混合模型都会产生卓越的性能。